2016朝阳高三二模物理

范文一：2016朝阳高三二模物理

北京市朝阳区高三年级第二次综合练习 2016. 5

13.下列核反应方程中,属于裂变的是

A . 144171

7281N He O H +→+ B . 2382344

92902U Th He →+

C . 23411120H H He n +→+

D . 235114489192056360U n Ba Kr 3n +→++

14.下列说法正确的是

A .液体分子的无规则运动称为布朗运动 B .布朗运动间接反映了液体分子的无规则运动 C .物体从外界吸热,其内能一定增大 D .外界对物体做功,其内能一定增大

15.一列简谐横波某时刻的波形如图所示,波沿 x 轴的正方向传播, P 为介质中的一

个质点。下列说法正确的是

A .质点 P 此时刻的速度沿 y 轴正方向 B .质点 P 此时刻的速度沿 x 轴正方向 C .经过一个周期,质点 P 通过的路程为 2b D .经过一个周期,质点 P 通过的路程为 2a

16. A 、 B 是两个完全相同的电热器, A 通以图甲所示的交变电流, B 通以图乙所示的交变电流,则两电热器的

电功率之比 P A ∶ P B 等于

A . 2∶ 1 B . 1:1 C

1 D . 1∶ 2 17.如图所示,从地面上的 A 点以速度 v 竖直向上抛出一小球,上升至最高点 B 后返回, O 为

A 、 B 的中点,小球在运动过程中受到的空气阻力大小不变。下列说法正确的是 A .小球上升至 O 点时的速度等于 0.5v B .小球上升至 O 点时的速度小于 0.5v

C .小球在上升过程中重力的冲量小于下降过程中重力的冲量 D .小球在上升过程中动能的减少量等于下降过程中动能的增加量

18.体育课上某同学做引体向上。他两手握紧单杠,双臂竖直,身体悬垂;接着用力上拉使下

颌超过单杠(身体无摆动) ;然后使身体下降,最终悬垂在单杠上。下列说法正确的是 A .在上升过程中单杠对人的作用力始终大于人的重力

B .在下降过程中单杠对人的作用力始终小于人的重力 C .若增大两手间的距离,最终悬垂时单臂的拉力变大 D .若增大两手间的距离,最终悬垂时单臂的拉力不变

甲乙

19.小芳同学利用手边的实验器材设计了如图所示的电路,电阻 R 的阻值以及电源的电动势和内阻均未知,电

压表另一端的接线位置待定。 I 分别为电压表和电流表的示数) A .若接 a ,利用该图像可得到电阻 R 的阻值 B .若接 b ,利用该图像可得到电阻 R 的阻值 C .若接 a ,利用该图像可得到电源的电动势和内阻 D .若接 b ,利用该图像可得到电源的电动势和内阻

20. 目前的手机触摸屏大多是电容式触摸屏。电容式触摸屏是一块四层复合玻璃屏, 玻璃屏的内表面和夹层各涂

有一层导电物质,最外层是一薄层玻璃保护层,夹层作为工作面,四个角上引出四个电极,内层作为屏蔽层以保证良好的工作环境。当手指触摸屏幕时,人体和触摸屏就形成了一个电容,对于高频电流来说,电容具有“通高频”的作用,于是手指从手的接触点吸走一部分电荷,从而导致有电流分别从触摸屏四角上的电极中流出, 并且流经这四个电极的电流与手指到四角的距离成正比, 控制器通过对这四个电流比例的精确计算, 得出触摸点的位置信息。在开机状态下,下列说法正确的是

A .电容式触摸屏感测手指触摸点的位置是因为手指对屏幕按压产生了形变 B .电容式触摸屏感测手指触摸点的位置是利用了电磁感应现象 C .当手指触摸屏幕时手指有微弱的电流流过 D .使用绝缘笔触摸屏幕时也能进行正常操作

第二部分 (非选择题共 180分)

本部分共 11小题,共 180分。 21.(18分)

(1) 如图甲所示, 在 “用双缝干涉测光的波长” 实验中, 光具座上放置的光学元件依次为光源、滤光片、 ________

(填写相应的器材) 、双缝、遮光筒、光屏。某同学用黄色滤光片时得到一个干涉图样,为了使干涉条纹的间距变宽,可以采取的方法是 _________。 A .换用紫色的滤光片

B .换用红色的滤光片 C .使光源离双缝距离近一些 D .使光屏离双缝距离远一些 (2)在用图乙所示的装置“验证牛顿

第二定律”的实验中,保持小车质量一定时,验证小车加速度 a 与合力 F 的关系。 ①除了电火花计时器、小车、砝码、砝码盘、细线、附有定滑轮

的长木板、垫木、导线及开关外,在下列器材中必须使用的有 _________(选填选项前的字母) 。 A . 220V 、 50Hz 的交流电源 B .电压可调的直流电源 C .刻度尺 D .秒表

E .天平(附砝码)

乙

甲

丁

②为了使细线对小车的拉力等于小车所受的合外力,以下操作正确的是 _________。 A .调整长木板上滑轮的高度使细线与长木板平行

B .在调整长木板的倾斜度平衡摩擦力时,应当将砝码和砝码盘通过细线挂在小车上 C .在调整长木板的倾斜度平衡摩擦力时,应当将穿过打点计时器的纸带连在小车上

③某同学得到了图丙所示的一条纸带, 由此得到小车加速度的大小 a =__________m/s2

(保留三位有效数字) 。

④在本实验中认为细线的拉力 F 等于砝码和砝码盘的总重力 m g ,已知三位同学利用实验数据做出的 a -F 图像如图丁中的 1、 2、 3所示。下列分析正确的是 _____(选填选项前的字母) 。 A .出现图线 1的原因可能是没有平衡摩擦力

B .出现图线 2的原因可能是砝码和砝码盘的质量不合适 C .出现图线 3的原因可能是在平衡摩擦力时长木板的倾斜度过大 ⑤在本实验中认为细线的拉力 F 等于砝码和砝码盘的总重力 m g ,由此造成的误差是 ______(选填“系统误差”或“偶然误差” ) 。设拉力的真实值为 F 真 , 小车的质量为 M , 为了使

5%mg F F -<>

真

, 应当满足的条件是

22. (16分)

如图所示,两平行金属板间距为 d ,电势差为 U ,板间电场可视为匀强电场;金属板上方有一磁感应强度为 B 的匀强磁场。电荷量为 +q 、质量为 m 的粒子,由静止开始从正极板出发,经电场加速后射出,从 M 点进入磁场后做匀速圆周运动,从 N 点离开磁场。忽略重力的影响。 (1)求匀强电场场强 E 的大小; (2)求粒子从电场射出时速度 ν的大小; (3)求 M 、 N 两点间距 L 的大小;保持粒子不变,请你说出一种增大间

距 L 的方法。

23. (18分)

许多电磁现象可以用力的观点来分析,也可以用动量、能量等观点来分析和解释。

(1)如图 1所示,足够长的平行光滑金属导轨水平放置,导轨间距为 L ,一端连接阻值为 R 的电阻。导轨所

在空间存在竖直向下的匀强磁场,磁感应强度为 B 。质量为 m 、电阻为 r 的导体棒 MN 放在导轨上,其长度恰好等于导轨间距,与导轨接触良好。在平行于导轨、大小为 F 的水平恒力作用下,导体棒从静止开始沿导轨向右运动。

a .当导体棒运动的速度为 v 时,求其加速度 a 的大小;

× × × ×

× × ×丙

b . 已知导体棒从静止到速度达到稳定所经历的时间为 t , 求这段时间内流经导体棒某一横截面的电荷量 q . (2)在如图 2所示的闭合电路中,设电源的电动势为 E ,内阻为 r ,外电阻为 R ,其余电

阻不计,电路中的电流为 I 。请你根据电动势的定义并结合能量转化与守恒定律证明:E

I R r

=+。

24. (20分)

“大自然每个领域都是美妙绝伦的。 ”随着现代科技发展,人类不断实现着“上天入地”的梦想,但是 “上天容易入地难” ,人类对脚下的地球还有许多未解之谜。地球可看作是半径为 R 的球体。 (1)以下在计算万有引力时,地球可看作是质量集中在地心的质点。

a .已知地球两极的重力加速度为 g 1,赤道的重力加速度为 g 2,求地球自转的角速度 ω;

b .某次地震后,一位物理学家通过数据分析,发现地球的半径和质量以及两极的重力加速度 g 1都没变,但赤道的重力加速度由 g 2略微减小为 g 3,于是他建议应该略微调整地球同步卫星的轨道半径。请你求出同步卫星调整后的轨道半径 r '与原来的轨道半径 r 之比

r r

'。 (2)图 1是地球内部地震波随深度的分布以及由此推断出的地球内部的结构图。在古登堡面附近,横波(S )消

失且纵波(P )的速度与地表处的差不多,于是有人认为在古登堡面附近存在着很薄的气态圈层,为了探究气态圈层的压强,两位同学提出了以下方案。

甲同学的方案:如图 2所示,由于地球的半径非常大,设想在气态圈层的外侧取一底面积很小的柱体, 该柱体与气态圈层的外表面垂直。根据资料可知古登堡面的半径为 R 1,气态圈层之外地幔及地壳的平均密度为 ρ,平均重力加速度为 g ,地球表面的大气压强相对于该气态圈层的压强可忽略不计。

乙同学的方案:设想在该气态圈层内放置一个正方体,并且假定每个气体分子的质量为 m ,单位体积内的分子数为 n , 分子大小可以忽略,其速率均相等,且与正方体各面碰撞的机会均等,与各面碰撞前后瞬间,分子的速度方向都与各面垂直,且速率不变。根据古登堡面附近的温度可推知气体分子运动的平均速率为 v .

请你选择其中的一种 ..

方案求出气态圈层的压强 p .

图

× × × ×

图 2

21. (18分)

(1)单缝(2分) ; BD (2分) (2) ① ACE (3分)② AC (3分)③ 1.16(±

0.04) (2分)④ B (2分)

⑤系统误差(2分) ; 5%(2分)

22. (16分)解:(1)由匀强电场中电势差与场强的关系得: =

E d

(3分) (2)根据动能定理有: 21

=qU mv

可得: =

v ① (5分) (3)根据牛顿第二定律可得: 2

=mv qvB R

②

L =2R ③

联立①②③式可得: =

增大间距 L 的方法有:只增大 U 或只减小 B 等。 (8分)

23. (18分)解:(1) a .当导体棒运动的速度为 v 时,电路中的感应电动势为 E BLv = ① 电流为 E

I R r

+ ② 导体棒所受的安培力为 A F BIL = ③

根据牛顿第二定律可得: A

F F a m -=

④ 联立①②③④式可得: 22() =-+F B L v

a m m R r ⑤ (7分)

b .设导体棒运动稳定的速度为 v m ,令⑤式中的 0a =, v =v m ,

可得:m 22

()

F R r v B L

⑥ 设某段极短的时间 t ?内,电路的电流为 i ,则安培力在这段时间内的冲量为 BiL t ?,在时间 t 内,根据动量定理有:m Ft BL i t mv -∑?= ⑦

其中, q i t =∑? ⑧

联立⑥⑦⑧式可得:

33()

Ft F R r q BL B L +=

(6分) (2)根据电动势的定义有:W

E q

=非 ⑨

在时间 t 内通过电路的电荷量为:q =It ⑩

根据能量守恒定律,非静电力做的功应该等于内外电路产生焦耳热的总和。即: W 非 = Q 外 +Q 内

在时间 t 内:Q 外 = I 2Rt Q 内 = I 2rt

EIt = I 2Rt +I 2

整理后可得: =

I R r

(5分) 24. (20分)解:(1) a .设地球的质量为 M ,对于质量为 m 的物体,

在两极有:12

GMm

mg R

① 在赤道,根据牛顿第二定律有:

G M m m g m R R ω-= ②

联立①②可得:ω (6分) b .设地震后地球自转的角速度为 ω', 根据牛顿第二定律有:

232

GMm

mg mR R

ω'-= ③ 设同步卫星的质量为 m ',根据牛顿第二定律,

地震前有:

G M m

m r r

ω''= ④ 地震后有: 22

G M m

m r r ω''''=' ⑤ 联立①②③④⑤可得:

r r

'= (7分)

(2)甲同学的方案:

设该柱体的底面积为 S ,则柱体的总重力为:1() G S R R g ρ=- ⑥ 该柱体静止,支持力与重力的合力为零。即: =F G 支 ⑦ 由牛顿第三定律可知,柱体对气态圈层的压力 =F F 压支 ⑧ 气态圈层中的气体压强为 F p S

压 ⑨

联立⑥⑦⑧⑨式可得:1() p R R g ρ=- (7分) 乙同学的方案:

设正方体边长为 a , t ?时间内与一个面发生碰撞的气体分子数为 N ,则:

N na = ⑩

t v

设该面与气体分子间的压力大小为 F ,由动量定理得:

() F t Nm v Nmv -?=--

则气体的压强为: 2

F p a =

3p nmv = (7分)

说明:用其他方法解答正确,给相应分数。

范文二：2012高三朝阳二模物理.doc

北京市朝阳区2011-2012学年度高三年级第二次综合练习

理科综合测试

20125 (13“ITER”(国际热核聚变实验堆()计划是目前全球规模最大、影响最深远的国际科研合

2341H +HHe +n,热核聚变反应方程为，相关的原子核或核子质量如作项目之一。某1120

下表，该反应中放出的能量为

2341HHHen 0112

质量m m m m 1234

1122()mmmmc，,,()mmmmc，,,A B ((1234341222

22()mmmmc，,,()mmmmc，,,C D ((12343412

14ab(如图所示，两束不同的单色细光束、，以不同的入射角

从空气射入玻璃三棱镜中，其出射光恰好合为一束。以下判

断正确的是

Ab (在同种介质中光的速度较大

Babb (若让、光分别从同种玻璃射向空气，光发生全反射的临界角较大Cabb(若让、光分别通过同一双缝装置，在同位置的屏上形成干涉图样，则光条纹

间距较大

Dabb(若让、光分别照射同种金属，都能发生光电效应，则光照射金属产生的光电

子最大初动能较大

15(为了科学研究的需要，常常将带电粒子储存在圆环形状空腔

中，圆环状空腔置于一个与圆环平面垂直的匀强磁场中，如

1HBα图所示。如果磁场的磁感应强度为，质子()和粒子1

4Heα()在空腔中做圆周运动的轨迹相同，质子和粒子在2

vvT圆环空腔中运动的速率分别为和，运动周期分别为HαH

T 和，则以下判断正确的是α

Av?v?TBv=v=T TT(;(;HαHα HαHα

Cv=v?TDv?v=T TT(;(;HαHα HαHα

16(如图所示，一自耦变压器(可看做理想变压器)输入端AB间加一正弦式交流电压，在输出端CD间接灯泡和滑动变阻器。转动滑片P可以改变副线圈的匝数，移动滑片Q可以改变接入电路电阻的阻值。则

A(只将P顺时针转动，灯泡变亮

B(只将P逆时针转动，灯泡变亮

C(只将Q向上移动，灯泡变亮

D(只将Q向下移动，灯泡变亮

17(如图甲所示，一列沿x轴正方向传播的简谐横波，O点为振源，P点到O点的距离l=10m。

t=0时刻O点由平衡位置开始振动，图乙为质点P的振动图像。下列判断正确的是

A(该波的波长为5m，t=0时刻振源O的振动方向沿y轴负方向 B(该波的波长为2m，t=0时刻振源O的振动方向沿y轴负方向 C(该波的波长为5m，t=0时刻振源O的振动方向沿y轴正方向 D(该波的波长为2m，t=0时刻振源O的振动方向沿y轴正方向 18Lθ(如图所示，长为、倾角为的光滑绝缘斜面固定在水平面

+qm上，斜面处于电场中。一电荷量为、质量为的小球以

vAB速度由斜面底端沿斜面上滑，到达顶端的速度仍为0

v ，则0

mgA (若电场是匀强电场，则场强大小一定为q

mgLBAB (若电场是匀强电场，、两点间的电势差一定为q

CBA (不论电场是否是匀强电场，小球在点的电势能一定大于在点的电势能

mgLsin,DAB (不论电场是否是匀强电场，、两点间的电势差一定为q19(图甲中的三个装置均在水平面内且处于竖直向下的匀强磁场中，足够长的光滑导轨固定

2abvab不动，图中电容器不带电。现使导体棒以水平初速度向右运动，导体棒在0

abvt运动过程中始终与导轨垂直，且接触良好。某同学定性画出了导体棒的-图像，

如图乙所示。则他画出的是

A(图1中导体棒ab的v-t图像

B(图2中导体棒ab的v-t图像

C(图3中导体棒ab的v-t图像

D(图2和图3中导体棒ab的v-t图像

20(一劲度系数为k的轻质弹簧一端固定，另一端与质量为m的滑块相连。滑块在光滑水平面上做简谐运动，周期为T，振幅为A。滑块从最大位移向平衡位置运动的过程中，在求弹簧弹力的冲量大小时，有以下两种不同的解法:

解法一解法二

由于弹簧的弹力F与位移x成正比，所以甲乙同学查阅资料后得到弹性势能的表达式

1T2同学先求出0~内的平均弹力 ,x为弹簧的形变量,。是:Ekx,p42

设滑块到达平衡位置时的速度为v，根据机kA，0 F,21122械能守恒定律: kAmv,22T由于运动时间是，所以 4k所以: vA,TkATm IF,,,48又根据动量定理: ImvAmk,,,0关于以上两种解法，下列判断准确的是

A(只有解法一正确

B(只有解法二正确

C(解法一和解法二都正确

D(解法一和解法二都不正确

第二部分(非选择题共180分)

本部分共11小题，共180分。

21((18分)

(1)某物理学习小组在“验证机械能守恒定律”的实验

2中(g取9.8m/s):

? 他们拿到了所需的打点计时器(带导线)、纸

带、复写纸、铁架台、纸带夹和重物，此外还

需要____________(填字母代号)

A(直流电源 B(交流电源

C(游标卡尺 D(毫米刻度尺

E(天平及砝码 F(秒表

? 先接通打点计时器的电源，再释放重物，打出的某条纸带如下图所示，O是纸带

静止时打出的点，A、B、C是标出的3个计数点，测出它们到O点的距离分别

为x=12.16cm、x=19.1cm和x=27.36cm，其中有一个数值在记录时有误，代表123

它的符号是_______(选填“x”、“x”或“x”)。 123

? 已知电源频率是50Hz，利用?中给出的数据求出打B点时重物的速度

v=_________m/s。 B

? 重物在计数点O、B对应的运动过程中，减小的重力势能为mgx，增加的动能2

1122为，通过计算发现，mgx_____(选填“>”、“<>

是_________________。

(2)另一个物理学习小组利用图甲所示的装置和频闪

相机来探究碰撞中的不变量。其实验步骤如

下:

【步骤1】用天平测出A、B两个小球的质量m、m(m>m); ABAB

【步骤2】安装好实验装置，使斜槽末端保持水平，调整好频闪相机的位置并固定;

【步骤3】让入射小球从斜槽上某一位置P由静止释放，小球离开斜槽后，用频闪

相机记录下小球相邻两次闪光时的位置，照片如图乙所示;

【步骤4】将被碰小球放在斜槽末端，让入射小球从位置P由静止开始释放，使它

们碰撞。两小球离开斜槽后，用频闪相机记录两小球相邻两次闪光时的

位置，照片如图丙所示。

经多次实验，他们猜想碰撞前后物体的质量和速度的乘积之和不变。

? 实验中放在斜槽末端的小球是__________ (选填“A”或“B”);

? 若要验证他们的猜想，需要在照片中直接测量的物理量有_______________(选

填“x”、“y”、“x”、“y”、“x”、“y”)。写出该实验小组猜想结果的表达式001122

________________________(用测量量表示)。

? 他们在课外书中看到“两物体碰撞中有弹性碰撞和非弹性碰撞之分，碰撞中的恢

vv,21复系数定义为，其中v和v分别是碰撞前两物体的速度，v和ve,102012vv,2010

分别是碰撞后两物体的速度，弹性碰撞恢复系数e=1，非弹性碰撞恢复系数e<>

于是他们根据照片中的信息求出本次实验中恢复系数的值e=___________。(结

果保留到小数点后两位数字)

22((16分)

如图所示，空间有一场强为E、水平向左的匀强电场，一质量为m、电荷量为+q的滑块(可视为质点)在粗糙绝缘水平面上由静止释放，在电场力的作用下向左做匀加速直线运动，运动位移为L时撤去电场。设滑块在运动过程中，电荷量始终保持不变，已知滑块与水平面间的动摩擦因数为μ。

(1)画出撤去电场前滑块运动过程中的受力示意图，并求出该过程中加速度a的大小; (2)求滑块位移为L时速度v的大小;

(3)求撤去电场后滑块滑行的距离x。

23((18分)

如图甲所示，MN、PQ是固定于同一水平面内相互平行的粗糙长直导轨，间距L=2.0m，R是连在导轨一端的电阻，质量m=1.0kg的导体棒ab垂直跨在导轨上，电压

传感器与这部分装置相连。导轨所在空间有磁感应强度B=0.50T、方向竖直向下的匀强磁场。从t=0开始对导体棒ab施加一个水平向左的拉力，使其由静止开始沿导轨向左运动，电压传感器测出R两端的电压随时间变化的图线如图乙所示，其中OA、BC段是直线，AB段是曲线。假设在1.2s以后拉力的功率P=4.5W保持不变。导轨和导体棒ab的电阻均可忽略不计，导体棒ab在运动过程中始终与导轨垂直，且接触良好。不计

2电压传感器对电路的影响。g取10m/s。求:

(1)导体棒ab最大速度v的大小; m

(2)在1.2s~2.4s的时间内，该装置总共产生的热量Q;

(3)导体棒ab与导轨间的动摩擦因数μ和电阻R的值。

24((20分)

某同学用一个光滑的半圆形轨道和若干个大小相等、可视为质点的小球做了三个有趣的实验，轨道固定在竖直平面内，且两端同高。第一次，他将一个小球从离轨道最低点的竖直高度h处由静止沿轨道下滑(h远小于轨道半径)，用秒表测得小球在轨道底部做往复运动的周期为T;第二次，他将小球A放在轨道的最低点，使另一个小球B从轨道最高点由静止沿轨道滑下并与底部的小球碰撞，结果小球B返回到原来高度的1/4，小球A也上滑到同样的高度;第三次，用三个质量之比为m:m:m,5:3:2的小球123做实验，如图所示，先将球m和m放在轨道的最低点，球m从某一高度由静止沿轨231

道下滑，它们碰后上升的最大高度分别为h、h和h，不考虑之后的碰撞。设实验中123

小球间的碰撞均无能量损失。重力加速度为g。求:

(1)半圆形轨道的半径R;

(2)第二次实验中两小球的质量之比m:m; AB

(3)第三次实验中三个小球上升的最大高度之比h:h:h。 ,,,

北京市朝阳区高三年级第二次综合练习

理科综合测试

2012(5

第一部分共20小题，每小题6分，共120分。

题号 1 2 3 4 5 6 7 8 9 10

答案

题号 11 12 13 14 15 16 17 18 19 20

答案 C D A B C D B B

第二部分共11小题，共180分。

物理

21((18分)

(1)? BD 2分

? x 2分 2

1.90 2分 ?

? > 2分

纸带与限位孔间有摩擦或空气阻力 2分

(2)? B 2分

? x、x、x 2分 012

2分 mxmxmx,，AAB012

? 0.88 2分

22((16分) N 解:(1)滑块沿轨道向左运动过程中的受力如图所示。 qE f 根据牛顿运动定律:

mg mgN,,0 qEfma,,

又因为 fN,,

qE 所以 (6分) ,,,agm

(2)物块向左做匀加速直线运动，根据运动学公式:

2 vaL,2

qE所以 (4分) vgL,,2(),m

(3)滑块在导轨运动的整个过程中，根据动能定理有

qELmgLx,，,,,()00

qE (6分) xL,,(1),mg

23((18分)

解:(1)从乙图可知，t=2.4s时R两端的电压达到最大，U=1.0V，由于导体棒内阻不计，m

故U=E=BLv=1.0V， mmm

Em 所以 ? (6分) v,,1.0m/smBL

(2)因为，而B、L为常数，所以，在0~1.2s内导体棒做匀加速直线运动。EUBLv,,

设导体棒在这段时间内加速度为a。设t=1.2s时导体棒的速度为v，由乙图可知11

此时电压U=0.90V。 1

因为 ? EUBLv,,111

U1所以 v,,0.90m/s1BL

在1.2s~2.4s时间内，根据功能原理

1122 ? mvPtmvQ，,,,，1m22

所以 J (6分) Q,5.3

(3)导体棒做匀加速运动的加速度

v,021 a,,0.75m/st

当t=1.2s时，设拉力为F，则有 1

P F,,5.0N1v1

同理，设t=2.4s时拉力为F，则有 2

P F,,4.5N2vm

根据牛顿第二定律有

? FfFma,,,11安N

f F ? FfF,,,022F安安

? mgN,,0mg

BLU1 又因为 ? FBIL,,1安1R

BLU2 ? FBIL,,2安2R

fN,, ?

由??????，代入数据可求得:

R=0.4Ω，,,0.2 (6分)

24((20分)

解:(1)第一次实验中，小球的运动可以看做摆长为R的单摆，根据单摆周期公式有:

R T,2,g

2Tg 所以 R (6分) ,24,

(2)第二次实验中，球B从高为R处释放，设球B与球A碰撞前瞬间的速度大小为v，B

,碰撞后瞬间它们速度的大小分别为和v。由题意知，球B与A碰后达到的高度均vAB

R为，根据机械能守恒定律有新课标第一网 4

12 mvmgR,BBB2

1R2, mvmg,BBB24

1R2 mvmg,AAA24

1,所以 ; vgR,2vvgR,,BAB2

又根据动量守恒定律有

, mvmvmv,,，BBBBAA

m3A所以 (6分) ,m1B

(3)根据题意设球1、2、3的质量分别为5m、3m和2m。设球1与球2碰撞前后的速度

,,分别为v、，球2与球3碰撞前后的速度分别为，球3与球2碰撞后的速度为。 vvv、v11223

球1与球2碰撞过程中动量守恒，且机械能守恒，则有xkb1.com

,553mvmvmv,，112

111222,，,，，，553mvmvmv112222

15, 解得vvvv,,，112144

球2与球3碰撞过程中动量守恒，且机械能守恒，则有

,332mvmvmv,，223

111222,，,，，，332mvmvmv223222

13,解得: vvvv,,，213142

在三个小球的上升过程中，根据机械能守恒定律有

12,，,55mvmgh112

12,，,33mvmgh 222

12，,22mvmgh332

解得 hhh::1:1:36,123

范文三：09.5朝阳高三二模物理

朝阳区二模物理学科试题 13(下列说法正确的是

A(气体总是充满容器，说明分子间存在斥力

B(对于一定质量的气体，温度升高，气体压强一定增大

C(温度越高，布朗运动越剧烈，说明水分子热运动的剧烈程度与温度有关

D(物体内能增加，温度一定升高 E/eV n 14(如图所示是玻尔理论中氢原子的能级图，现让一束单 ?0 4 ,0.85 色光照射一群处于基态的氢原子，受激发的氢原子能3 ,1.51 自发地辐射出三种不同频率的光，则照射氢原子的单2 ,3.4

色光的光子能量为

A(13.6eV B(12.09eV

C(10.2eV D(3.4eV

1 15(如图所示，在平面xOy内有一沿轴x正方向传播的简,13.6

谐横波，波速为3.0m/s，频率为2.5Hz，A、B两点为

该波上两质元的平衡位置，相距0.90m。以A、B为平衡位置的质元振动过程中，取A

点的质元位于波峰时为t=0，对于B点的质元来说

A(t=0时，加速度最大 B(t=0.1s时，速度为零

C(t=0.2s时，速度方向沿y轴负方向 D(t=0.3s时，位于波谷 16(如图所示是一理想自耦变压器，A、V是理想交流电流表和电压表，在ab间接一正??

弦交流电，若将滑动头P向上移动一小段距离，则以下说法正确

的是

P A(电压表和电流表示数都减小 aA V R B(电压表和电流表示数都增大 ~

C(电压表示数增大，电流表示数减小 b

D(电压表示数减小，电流表示数增大

17(在水下同一深度有两个不同颜色的点光源P、Q，在水面上P照亮的区域大于Q照亮的

区域，以下说法正确的是

A(P光的频率大于Q光的频率

B(P光在水中的传播速度小于Q光在水中的传播速度

C(P光恰能使某金属发生光电效应，则Q光也一定能使该金属发生光电效应

D(同一双缝干涉装置，P光条纹间距离小于Q光条纹间距

18(我国道路安全部门规定:高速公路上行驶的最高时速为120km。交通部门提供下列资料:

资料一:驾驶员的反应时间:0.3~0.6s

资料二:各种路面与轮胎之间的动摩擦因数

路面动摩擦因数

干沥青 0.7

干碎石路面 0.6~0.7

湿沥青 0.32~0.4

根据以上资料，通过计算判断汽车行驶在高速公路上的安全距离最接近

A(100m B(200m C(300m D(400m

19(某电学黑箱内有定值电阻、电容器、电感线圈，在接线柱间以如图甲所示的“Z”字形连接(两接线柱间只有一个元件)。为了确定各元件的种类，一同学把DIS计算机辅助实验系统中的电流传感器(相当于电流表)与一直流电源、滑动变阻器、电键串联，如图乙所示。然后分别将AB、BC、CD接入电路，闭合电键，计算机显示出的电流随时间变化的图象分别如图丙(a)、(b)、(c)所示。则下列说法正确的是

A B 电流

传感器

C D 黑箱

甲乙

(a)(b)(c)

丙

A(AB间有电容器，BC间有电感线圈，CD间有定值电阻

B(AB间有电容器，BC间有定值电阻，CD间有电感线圈

C(AB间有电感线圈，BC间有电容器，CD间有定值电阻

D(AB间有电感线圈，BC间有定值电阻，CD间有电容器

20(在足够大的光滑水平面上放有两物块A和B，已知m>m，A物块连接一个轻弹簧AB并处于静止状态，B物体以初速度v向着A物块运动。在B物块与弹簧作用过程中，两物0

块在同一条直线上运动，下列判断正确的是

A(弹簧恢复原长时，B物块的速度为零

B(弹簧恢复原长时，B物块的速度不为零，且方向向右

C(弹簧压缩过程中，B物块的动能先减小后增大

D(在与弹簧相互作用的整个过程中，B物块的动能先减小后增大

A B

第?卷(非选择题共180分)

本卷共11道题。

21((18分)

(1)某课外小组利用多用电表粗测实验室新进的一些电阻。他们的操作过程如下:

将红、黑表笔分别插入多用电表的“，”“,”插孔，选择开关旋钮至电阻挡“×10”; ?

? 将红、黑表笔短接，调节欧姆调零旋钮使欧姆表指针指零;

? 红、黑表笔分别与电阻的两端相连，此时多用电表的示数如图甲所示;

接下来他们的操作步骤应为:______________

A(将选择开关旋钮转至电阻 “×1” 挡，红、黑表笔分别与电阻的两端相连，读出

电阻的阻值

B(将选择开关旋钮转至电阻 “×100” 挡，红、黑表笔分别与电阻的两端相连，读

出电阻的阻值

C(将选择开关旋钮转至电阻 “×100” 挡，红、黑表笔短接，调节欧姆调零旋钮使

欧姆表指针指零，然后将红、黑表笔分别与电阻的两端相连，读出电阻的阻值

“×1” 挡，红、黑表笔短接，调节欧姆调零旋钮使欧D(将选择开关旋钮转至电阻

姆表指针指零，然后将红、黑表笔分别与电阻的两端相连，读出电阻的阻值 ? 换挡后多用电表的示数如图乙所示，该电阻的阻值为_____________Ω。 ? 将选择开关旋至OFF挡，取出红、黑表笔。

甲乙

(2)某同学在课外书中获知:弹簧的弹性势能E与及弹簧形变量x的平方成正比，并与弹p

簧的劲度系数k有关，为了验证这一结论，该同学设计了如下实验:

a)取一根轻质弹簧和一根内径略大的直玻璃管，将玻璃管固定在水平桌面上，将弹

簧插入玻璃管并固定一端，如图所示。

b)将小钢球放入玻璃管，轻推小球，使弹簧压缩到某一位置后，测出弹簧的压缩量

x，突然撤去外力，小球沿水平方向弹出落在地面上，记录小球的落地位置;保持

弹簧压缩量不变，重复10次上述操作，从而确定小球的平均落点，测得小钢球的

水平射程s。

c)多次改变弹簧的压缩量，重复以上步骤，测得小钢球的一组水平射程s。

请你回答下列问题:

? 在实验中，“保持弹簧压缩量不变，重复10次上述操作，从而确定小球的平均落点”的目的是为了减小______________(填“系统误差”或“偶然误差”)。

? 若要测量小钢球的水平射程s，必须选取的实验器材是( )

A(秒表 B(刻度尺 C(螺旋测微器

D(白纸 E(复写纸

该同学根据实验的测量结果，作出了弹簧形变量x与小钢球水平射程s的s-x图像，?

2mgsE,并根据能量守恒定律推导出了E与水平射程s的关系式:。据此判断出弹簧的弹pp4h

2性势能E与x成正比，他判断的过程是:__________________________________________ p

_______________________________________________________________________________

，

，，

，

，，

O x

2? 该同学验证了弹簧的弹性势能E与x成正比后，又做出了“E与劲度系数k成正pp

比”的判断，他判断的依据是:_____________________________________________________

_______________________________________________________________________________

22((16分)一质量为M=0.8kg的小物块，用长为l=0.8m的细绳悬挂在

天花板上，处于静止状态。一质量为m=0.2kg的粘性小球以速度

v=10m/s水平射向物块，并与物块粘在一起，小球与物块相互作用时02间极短可以忽略，不计空气阻力，重力加速度g取10m/s。求:

(1)小球粘在物块上的瞬间，小球和物块共同速度的大小;

2)小球和物块摆动过程中，细绳拉力的最大值; (

v0 (3)小球和物块摆动过程中所能达到的最大高度。

23((18分)如图所示，两条相距l=0.20m的平行光滑金属导轨中间水平，两端翘起。中间水平部分MN、PQ长为d=1.50m，在此区域存在竖直向下的匀强磁场B=0.50T，轨道右端接有电阻R=1.50Ω。一质量为m=10g的导体棒从左端高H=0.80m处由静止下滑，最终停在距MP右侧L=1.0m处，导体棒始终与导轨垂直并接触良好。已知导体棒的电阻r=0.50Ω，

2其他电阻不计，g取10m/s。求:

(1)导体棒第一次进入磁场时，电路中的电流;

(2)导体棒在轨道右侧所能达到的最大高度;

(3)导体棒运动的整个过程中，通过电阻R的电量。

B R Q P

M N

24((20分)如图所示，在同时存在匀强电场和

匀强磁场的空间中，取正交坐标系Oxyz(xy

轴正方向水平向右，y轴正方向竖直向上)。

匀强磁场的方向与Oxy平面平行，且与x轴

的夹角为60?。一质量为m、电荷量为+q的带

P 电质点从y轴上的点P(0，h，0)沿平行于B

z轴正方向以速度v射入场区，重力加速度为0 v0

g，

O (1)若质点恰好做匀速圆周运动，求电场强度x 60? 的大小及方向;

(2)若质点恰沿v方向做匀速直线运动，求0z 电场强度的最小值E及方向; min

(3)若电场为第(2)问所求的情况，撤去磁

场，当带电质点P点射入时，求带电质点落在Oxz平面内的位置。

参考答案

13 14 15 16 17 18 19 20 C D B A C B A D 21((1)D (3分) 18 (3分)

(2)?偶然误差 (3分)

?BEF (3分)

22? (3分) EssxEx与成正比，而与成正比，与成正比？pp

22ExEaxa与成正比，可以写成 ,()为比例系数，pp? (3分) 2而的量纲为与劲度系数的量纲相同。aJ/mN/m,,

22(解:(1)因为小球与物块相互作用时间极短，所以小球和物块组成的系统动量守恒。

mvMmv,，()(3分)0共

mv代入数据0vv,,,,,,,2.0m/s(3)分共共Mm，

(2)小球和物块将以v开始运动时，轻绳受到的拉力最大，设最大拉力为F，共

2v共FMmgMm,，,，()()(3)分l 2v共代入数据FMmgF,，，,,,,,,()15N(3)()分l

(3)小球和物块将以v为初速度向右摆动，摆动过程中只有重力做功，所以机械能守恒;共

设它们所能达到的最大高度为h，根据机械能守恒定律:

12()分()(2)MmvMmgh，,，共2 2v共代入数据hh,,,,,,,0.2m(2)分2g

23(解:(1)因为导轨光滑，所以导体棒下滑过程中机械能守恒，设导体棒第一次进入磁

12mgHmv,场时的速度为v，则 12

(2分) vgH,,，，,22100.20m/s4.0m/s

EBlv,,，，,0.500.204.0V0.40V (2分)

E0.40 (2分) I,,,A0.20ARr，，1.500.5

(2)设导体棒第一次出水平磁场时的速度为v，设导体棒在水平轨道上运动的时间里，2电路中电流的平均值为，导体棒在水平导轨上运动的时间为t，根据动量定理有 I

,,,Ftmvmv?21安

FBIl安?,

EI,? (5分) Rr，

,,E,?,t

,,,,BSBld?,

22Bldvv,,,3.25m/s21()Rrm，

1代入数据2根据机械能守恒:分mghmvh,,,,,,,0.53m(1)2222

, (3)设导体棒在整个运动过程中闭合电路中磁通量的变化为，设导体棒在磁场中运,,

,Imv,,0?1安,动中电流的平均值为， I

,,FBIl安?,

,,qIt,,?

代入数据,2,E ,,,,,,，q510C (6分) ,,I,?Rr，

,,,,,E,?,,t

,,,BlL?,

24(解:(1)由于质点做匀速圆周运动，所以质点受到电场力、重力二力平衡，即:

mg (3分) 方向竖直向上 (2分) EqmgE,,,0q

(2)如图甲所示，带电质点受重力mg、洛伦兹力qvB、电场力qE的作用做匀速直线0运动，根据几何关系可知:当电场力方向与洛伦兹力方

y 向垂直时，场强有最小值E，所以电场强度E的方minmin向与xOz的夹角为60?，即与磁感应强度B的方向相同。

q Emin(2分)

根据牛顿运动定律: f 洛P B qEmg,,sin600? (3分)min v0 fmg,,cos600?洛mg

3mgO x E,(2)分min60? 2q

(3)如图乙所示，撤去磁场后，带电质点受到重z 甲力mg和电场力qE作用，其合力与洛伦兹力大小相等min

方向相反，即沿图中PM方向，合力与v方向垂直。 0

1fmgmg,,cos60由?得 (2分) 洛2

设经过时间t到达Oxz平面内的点N(x，y，z)，由运动的合成和分解可得: 沿v方向: ? (2分) zvt,00y

12沿PM方向: (2分) PMat,?q Emin2

h ? (2分) 沿PM方向: PMh,,2P F 合sin30

v0xh,3M mg 联立?~?解得: 2hO x zv,20g

z ,,2hNhv3,0,2的位置。所以。带电质点在 ,,0,,g,,

(2分) N

乙

范文四：2017.5 朝阳高三二模英语

北京市朝阳区高三年级第二次综合练习英语学科测试2017.5

第一部分：听力理解（共三节，30分）

第一节（共5小题；每小题1.5分，共7.5分）

1. How are the two speakers going to the concert?

A. By car.

A. He went sailing.

A. The Science Museum.

A. A toy. B. By bike. B. He watched TV. B. The Nature Museum. B. A gift card. C. By bus. C. He visited a castle. C. The Art Museum. C. A set of books. 2. What did the man do during the weekend? 3.Which museum did the girl visit with her class? 4. What present will the woman get for Sammy?

5.Which of the following will the man buy?

A. B. C.

第二节（共10小题；每小题1.5分，共15分）

听第6段材料，回答第6至7题。

6. How was the weather for most of the woman’s holiday?

A.Wet.

A.In a tent. B. Windy. B. At a hotel. C. Sunny. C. In a guest house. 7. Where does the woman advise the man to stay?

听第7段材料，回答第8至9题。

8. What is the woman planning to study?

A.The types of celebration.B.The origins of the festivals.C. People’s attitudes to the festivals.

9. What has the woman already discovered?

A. Similar ways of having carnivals in countries.B. The link between the carnivals and the seasons.

C. Seasons in which different festivals are celebrated.

听第8段材料，回答第10至12题。

10. Where are the two speakers?

A. In a shopping center. B. On a plane. C. At an airport.

11. What was the man most satisfied with?

A. The total environment. B. The prices in the duty-free shop.C. The distance from the Gate to Immigration.

12. What can we learn about the man?

A. He is from Canada. B. He has just got his suitcase.C. He is leaving for an Asian country.

听第9段材料，回答第13至15题。

13. When is the meeting held?

A. On Thursday evening.

A. To pay for heating. B. On Sunday morning. B. To rent the hall. C. On Sunday evening. C. To collect information. 14. Why do people need to pay ￡3 each week?

15. Why does the man make the phone call?

A. To arrange a weekly meeting. B. To provide a sports programme. C. To introduce the volleyball club.

第二部分：知识运用（共两节, 45分）

第一节单项填空（共15小题；每小题1分, 共15分）

21.I don’t think she visited the exhibition this morning, ______ she was with me at that time.

A. though B.or C. but D. for

22. If you go to buy the top best-selling CD, please get ______ for me.

A. one B. it C. this D. that

23. ––I think the paper is taking you a long time to write.

––I ______ on it for almost a month now.

A. worked B. was working C. am working D. have been working

24.They havequite a few suggestions about ______ the service can be improved.

A. that B. why C. how D. what

25. ______ exactly what was wrong with him, the doctors gave him a complete examination.

A. To discover B. Discovering C. Discovered D. Having been discovered

26. ––Do you mind if I go out this evening?

––I don’t mind what you do ______ you let me know ahead of time.

A. ever since B. in case C. as long as D. even though

27. Please wear your best clothes on Monday, as your class photos ______ then.

A. will take B. will be taken C. have taken D. have been taken

28. Thanks for your useful advice; otherwise I ______ such rapid progress.

A. didn’t make

C.hadn ’t made B. couldn’t have made D. shouldn’t have made

29. We have a learning center ______kidsdo independent and self-directed learning activities.

A. which B. when C. where D. whose

30. ––Did you have to do much for the dinner party?

––Helen ______ everything by the time I got home.

A. finished B. was finishing C. would finish D. had finished

31. To tell the truth, I didn’t expect that there were so many people ______ the idea.

A. supported B. supporting C. to support D. having supported

32. An accident happened on the main road. That is ______ traffic seemed to slow suddenly.

A. why B. how C. when D. what

33. ––Is this tea good cold as well?

––______ with ice, this tea is especially delicious.

A. Served B. Serving C. Having served D. To be served

34. They’ve seen many famous scholars in the conference. How I wish I ______ it!

A. have attended B. will attend C. would attend D. had attended

35. ______ he is remembered for is his humorous style when he is talking.

A. Where B. That C. What D. How

第二节完形填空（共20小题；每小题1.5分，共30分）

Do What You Enjoy

Sometimes you may find that you are not happy in your life, although everything is going well. Most of the time you have to __36__ this kind of unhappy life, since it is really hard to make changes and move on to a new business, which often involves taking __37__.

My father, however, was a quite different example. When I was about 9 or 10, he told me that I should be whatever I wanted when I grew up, so long as I __38__ it. He said that if I were not feeling __39__, I should try to change my life to make it more delightful, and I would find real __40__ as a result. From him I learned a great lesson on the __41__ of doing one ’s favorite.

My father got into the insurance industry when he was very young, and he was very __42__. He became one of the company ’s top salesmen, even though he was only 25 years old. Soon he became one of the first independent insurance salesmen in our state. __43__, he decided to leave his successful __44__ and move on to other fields. You might __45__ why he did so. The answer was simple: he liked to do something challenging, something that __46__ his strength and ability, especially in a way that is interesting. My father just wanted to have a try, and so he did. After leaving the insurance company, he worked in social media and then in digital technology, which really __47__ him. Of course he wasn ’t successful in everything he tried, but he told me for __48__ that he did something he liked, and that he had the __49__ of doing what he enjoyed.

__50__ one’s comfortable life is not easy. I’ve learned this from my father, and I can say no matter whether the __51__ is good or bad, it is __52__ doing one’s favorite. When we do something we love, it gives us extra __53__ to meet our goals, which are associated with psychological well-being and health. As long as we have no __54__ and give it a try, we are forced to push against ourselves. After all we all want to be where we are __55__ourselves.

36. A. lose

37. A. risks

38. A. promised

39. A. lucky

40. A. concern

41. A. value

42. A. sensitive

43. A. Besides

44. A. schedule

45. A. wonder

46. A. limited

47. A. confused

48. A. free

49. A. satisfaction

50. A. Protecting

51. A. function

52. A. simple

53. A. motivation

54. A. rights

55. A. convincing B. stop B. turns B. enjoyed B. safe B. pleasure B. honor B. cautious B.Therefore B. career B. explain B. predicted B. shocked B. certain B. sympathy B. Selecting B. result B. normal B. consideration B. faults B. evaluating C. share C. steps C. admitted C. comfortable C. strength C. control C. optimistic C.However C. reform C. blame C. tested C.discouraged C. good C. responsibility C. Leaving C. signal C. popular C. occupation C. regrets C. representing D. continue D.suggestions D. adjusted D. special D. talent D. relief D. successful D. Meanwhile D. competition D. conclude D. affected D. attracted D. real D. security D. Arranging D. attitude D. worth D. qualification D. excuses D. challenging

第三部分：阅读理解（共两节，40分）

第一节（共15小题；每小题2分，共30分）

I Was the Doughnut Lady

In university I had a part-time job at a shop that sold doughnuts and coffee. Situated on a

block where several buses stopped, it servedthe people who had a few minutesto wait for their

bus.

Every afternoon around four o’clock, a group of schoolchildren would burst into the shop, and business would come to a stop. Adults would glance in, see the crowd and pass on. But I didn’t mind if the child ren waited for their bus inside.Sometimes I would hand out a bus fare when a ticket went missing—always repaid the next day. On snowy days I would give away some doughnuts. I would lock the door at closing time, and we waited in the warm shop until their bus finally arrived.

I enjoyed my young friends, but it never occurred to me that I played an important role in their lives —until one afternoon when a man came and asked if I was the girl working on weekdays around four o’clock. He identified himself as the father of two of my favorites.

―I want you to know I appreciate what you do for my children. I worry about them taking two buses to get home. It means a lot that they can wait here and you keep an eye on them. When they are with the doughnut lady, I know they are safe. ‖ I told him it wasn’t a big deal, and that I enjoyed the kids.

So I was the Doughnut Lady. I not only received a title, but became a landmark.

doughnuts

end of the route at nigh t but wouldn’t leave until I arrived to pick her up ; Or that nice police officer who took pity on myboys walking home in the rain when I was at work—even though the phone rang all the next day with calls from curious neighbors.―Was that a police car I saw at your house last night?‖

That wasn’t a police car. That was a Doughnut Lady.

59. According to the passage, the author sometimes ______.

A. sold bus tickets to the childrenB. gave the children free doughnuts

C. did business with the children’s helpD. called the children’s parents to pick them up

60. By saying ―…it wasn’t a big deal (Para.4),‖ the author meant that ______.

A. she hadn’t done anything significantB. she hadn’t spent much time with the children

C. she hadn’t made a lot of money from the childrenD. she hadn’t found it hard to get along with the children

61. What can we learn about the police officer?

A. He took the boys to the police station.B. He helped the boys look for their mother.

C. He drove the boys back home in a police car.D. He managed to make sure of the boys’ identity.

62. The passage suggests that ______.

A. running a business requires skill

C.devotionshould be everything in life B.taking responsibility is a moral virtue D. there are always no small acts of kindness

“We haven’t found anything that we can’t recycle! ”

Cigarette ends are everywhere —littering our streets and beaches —and for decades they’ve been thought o f as ―unrecyclable‖. But a New Jerseybased company, called TerraCycle, has taken on the challenge, and has come up with a way to recycle millions of cigarette ends and turn them into industrial plastic products. Its aim is to recyclethings that people normally consider impossible to reuse.

Obviously it would be even better for the environment if everyone just stopped smoking, but the statistics show that although there has beenan increase in anti-smoking ads and messaging, between 2000 and 2014, global sales of cigarettesincreased by 8 percent, and a whole lot of those cigaretteends are ending up as Since most of our litter eventually ends up in waterways, cigaretteends can surelypollute the surrounding environment. ―It only takes a sing le cigarette end to pollute a liter of water,‖ TerraCycle founder,Tom Szaky, said. ―Animals can also mistake littered cigarette ends for food.‖

So how do you go about turning all those poisonousends into something useful? TerraCycle does this by first breaking them down into separateparts.They mix the remaining materials, such as the tobacco and the paper, with other kinds of rubbish, and use it on non-agricultural land, such as golf courses.The filters (过滤嘴) are a little harder. To recycle these, TerraCycle first makes them clean and cuts them into small pieces, and then combines them with other recycled materials, making them into liquidfor industrial plastic products.

They’re now also expanding their recycling offerings to the rest of the 80 percent of household waste that currently can’t be recycled, such as chocolate packaging, pens, and mobile phones. The goal is to use the latest research to find a way to stop so much waste ending up in landfill (垃圾填埋), and then get companies to provide money for the process. And so far, it’s working.

―We haven’t found anything that we can’t recycle,‖ communications director of Ter raCycle, AlbeZakes, said . ―But with the amount and variety of packaging and litter in the world, we are always looking for new waste streams to address.‖

63. What does TerraCycle intend to do?

A. Search for recyclable materials for use.B. Deal with as many cigarette ends as possible.

C. Produce new kinds of industrial plastic products.D. Recycle what used to be considered unrecyclable.

64. The underlined word ―trash ‖ in Paragraph 2 probably means ______.

A. rubbish B. poison C. disaster D. ruin

65. What does Paragraph 3 mainly talk about?

A. The effective use of cigarette ends.B. The process of recycling cigarette ends.

C. The difficulty in recycling cigarette ends. D. The reason for breaking down cigarette ends.

66. What Albe said in the last paragraph implies that ______.

A. there is more and more waste to be recycledB. it is difficult for TerraCycle to recycle everything

C. TerraCycle is trying to meet the challenge of new waste

D. TerraCycle has successfully recycled a large amount of waste

DCurrent Culture: Is Common Culture Alive?

The digitizing and globalizing world is changing the working of culture. As some see it, cities and nations are losing their common culture and their general spirit: people can no longer count on those around them valuing any of the same music or films. Others argue that a common culture is not dying so much as changing forms: it is less and less attached to a particular area and ever more linked to global networks.

The facts lead to the change that anyone can become a cultural producer today, that the culture is increasingly available everywhere you want it, and whenever you want it, not just in the two months after the movie or book came out. Cultural possibilities have multiplied as a result,but the change also means fewer cultural moments.It is easy to find thechange in terms of loss of diversity of society. So what will it mean if globalization turns us into one wide world culture?

For the enthusiasts of these changes, culture is not about popular artists or books, but centers on platforms like Google and Wikipedia, whereevery variety of culturebrings about the exchange of knowledge and ideas, andmakes connections across boundaries.It is perhaps debatable whether two people who have participated in such websites, but in totally different corners of them, have had a cultural experience in common. In fact, these platforms become very successful with a large crowd of people, who build things together, share information, and forward articles back and forth.

There are still more questions. What does it mean for the future of countries that culture now goes beyond the limits of the nation? Is there anything to defend and preserve in the passing culturalworld, or is that merely to favor pen over printing press, horse over automobile?

Up to now a growing quantity of culture has been globally spreading and developing. More individuals (个人) than ever have the chances to be makers of culture, even if that means more to choose from and fewer standards to bereached in common.What it means is this strange feeling: that of being more connected than ever, with one-click access to so much of the cultural harvest around the world, and yet, of being starved for having similar interests and opinions with others, concerned only with ourselves.

67. In Paragraph 1 the author indicates ______.

A. the missing of common cultureB. the cultural diversity among people

C. the disadvantage in the digitizing societyD. the double standard of cultural evaluation

68. It can be inferred from Paragraph 3 that ______.

A. people feel satisfied with the current cultureB. enthusiasts look for current culture from famous artists

C. disappearance of common culture is a problem to be solved

D. common culture may exit into websites that connect the world

69. According to the author, the increase of cultural possibilities can be caused by ______.

A.agreement with common culture B. individuals as cultural producers

C. popular artists and books available

A. Uninterested. B. Approving. D. a reduction in development of culture C. Uncertain. D. Critical. 70. What is the author’s attitude towards current culture?

第二节（共5小题；每小题2分，共10分）

Sponsorship in Sport

Sponsorship in sport is usually in the form of financial assistance offered by a commercial organization to a person or a team in return for publicity.

Most people admit that sponsorship in sport is necessary. For one thing, sport has become increasingly expensive to manage, and players need money to be able to participate at a high level. For another, watching sport has become a major form of social entertainment, so sponsorship of sporting events helps companies to promote their products. ___71___ The only negative aspects for a sponsor are if an athlete should play badly or misbehave, but generally sport creates a good image (形象) for a company by conveying health and fitness.

___72___The organizers of the Olympic Games have been criticized for accepting sponsorship from fast food companies. People question why the organizers take money from such companies. Public health experts believe if we really want to promote health alongside excellence in sport, then it must be linked by approvals for products which support good health. ___73___

Nowadays sponsorship is no longer limited to major events and professionals. Local teams and young players are also sponsored. There is a trend also for amateurs to rely on sponsorship for equipment, clothing, and to cover their expenses of training and competing even though they are not full-time sportspeople. So sponsorship enables major world events to become more impressive. ___74___ Besides, sponsorship enables us to view our favorite sporting event on television, even though it is taking place on the other side of the world.

However, such commercialization sometimes means compromise, and in fact, for some less popular sports it may be a negative factor, and it may even result in the end of that sporting code. Sports which are seen as less popular and therefore less commercially successful can no longer attract sponsors. ___75___The uneven distribution of sponsorship could lead to the end of some less popular sports, and could reduce our freedom of sporting choice.

A. It shouldn’t be related to any unhealthy products.

B.Sponsorshipmay mislead playersabout sporting choices.

C. However, this has caused serious arguments for some major events.

D. The end goal for the sponsors is to deliver value and growth for their brands.

E. It also promotes participation at grassroots level, bringing sports to everyone.

F. Tax relief is another advantage, which means sponsorship can help to save money.

G . Sponsorship may create the situation of giving with the one hand and taking with the other.

第四部分：书面表达（共两节，35分）

第一节（15分）

假设你是红星中学高三(1)班学生李华。你的英国朋友Jim 准备参加当地举办的“美丽中国”艺术展，来信向你咨询。请给Jim 写封回信，为他推荐一个参展作品。信的内容包括：

1. 推荐一个作品；2. 简单介绍该作品；3. 说明推荐的理由。

注意：1. 词数不少于50；2. 信的开头和结尾已给出，不计入总词数。

Dear Jim,

_______________________________________________________________________________

Yours,

Li Hua

第二节（20分）

假设你是红星中学高三(1)班学生李华。上周六你和同学骑共享单车去购书时看到某些不文明现象。请根据以下四幅图的先后顺序，以“Our Meaningful Work”为题，给校刊“英语角”写一篇英文稿件，介绍事情的整个过程。

注意：词数不少于60。提示词：共享单车shared bicycle

Our Meaningful Work

_______________________________________________________________________________

北京市朝阳区高三年级第二次综合练习英语试题答案2017. 5

第一部分：听力理解（共三节，30分）

1-5 BCABC6-10 ACBBC 11-15 AAABC16. 79479117.Watson 18. voice 19. 25%20. Wednesday

第二部分：知识运用（共两节，45分）

第一节单项填空（共15小题；每小题1分，共15分）

21—25 DADCA 26—30 CBBCD 31—35 BAADC

第二节完形填空（共20小题；每小题1.5分，共30分）

36—40 DABCB 41—45 ADCBA 46—50 CDBAC51—55 BDACD

第三部分：阅读理解（共两节，40分）

第一节（共15小题；每小题2分，共30分）

56—60 CBABA61—65 CDDAB 66—70 CADBC 71—75 FCAEG

第四部分：书面表达（共两节，35分）

第一节（15分）One possible version:

Dear Jim,

I ’ve received your letter and known you’re going to take part in the Beauty of China Exhibition. Now I’m writing to recommend a special work for you.

I think you can submit a paper-cut of rooster. Paper-cutting is a kind of traditional handicrafts. In China, peoplelike to make red paper into different patterns to decorate doors and windowsforgood luck and happiness.

I recommend it because it represents aparticular type of Chinese folk art, and this year is the Chinese lunar year of the rooster. I’m sure visitors will be interested in your work.

If you need any help, please let me know.

Yours,

Li Hua

第二节（20分）

三、内容要点：

1. 骑共享单车去图书大厦2. 看到共享单车随处乱放3. 逐一摆放 4. 受到称赞

四、One possible version:

Our Meaningful Work

Last Saturday my classmates and I did some meaningful work as we went to buy books.

That afternoon we rode shared bicycles to Beijing Book Building as planned. Everyone was excited, enjoying the convenience brought about by the shared bicycles. However, something unexpected happened on arrival. We noticed the shared bicycles parked here and there, blocking the way of the passersby. One of my classmates proposed placing them in order, so we got down to work immediately. It took us about twenty minutes to finish the work. Seeing the tidily arranged bicycles, we all felt delighted. We also received high praise for what we had done.

The experience caused my concern about shared bicycles. I think we should put them in place after using them, whichnot only bringsusneat and tidy environment, but also reflects qualities of a good citizen.

范文五：2017朝阳高三二模英语试题

北京市朝阳区高三年级第二次综合练习

英语学科测试 2017.5

（考试时间120分钟满分150分）

本试卷共12页，共150分。考试时长120分钟。考生务必将答案答在答题卡上，在试卷上作答无效。

第一部分：听力理解（共三节，30分）

第一节（共5小题；每小题1.5分，共7.5分）

听下面5段对话。每段对话后有一道小题，从每题所给的A 、B 、C 三个选项中选出最佳选项。听完每段对话后，你将有10秒钟的时间来回答有关小题和阅读下一小题。每段对话你将听一遍。

例：What is the man going to read?

A. A newspaper.

B. A magazine.

C. A book.

答案是A 。

1. How are the two speakers going to the concert?

A. By car. B. By bike. C. By bus.

2. What did the man do during the weekend?

A. He went sailing. B. He watched TV. C. He visited a castle.

3. Which museum did the girl visit with her class?

A. The Science Museum. B. The Nature Museum. C. The Art Museum.

4. What present will the woman get for Sammy?

A. A toy. B. A gift card. C. A set of books.

5. Which of the following will the man buy?

A. B.

第二节（共10小题；每小题1.5分，共15分）

听下面4段对话或独白。每段对话或独白后有几道小题，从每题所给的A 、B 、C 三个选项中选出最佳选项。听每段对话或独白前，你将有5秒钟的时间阅读每小题。听完后，每小题将给出5秒钟的作答时间。每段对话或独白你将听两遍。

听第6段材料，回答第6至7题。

6. How was the weather for most of the woman’s holiday?

A. Wet. B. Windy. C. Sunny.

7. Where does the woman advise the man to stay?

A. In a tent. B. At a hotel. C. In a guest house.

听第7段材料，回答第8至9题。

8. What is the woman planning to study?

A. The types of celebration.

B. The origins of the festivals.

C. People’s attitudes to the festivals.

9. What has the woman already discovered?

A. Similar ways of having carnivals in countries.

B. The link between the carnivals and the seasons.

C. Seasons in which different festivals are celebrated.

听第8段材料，回答第10至12题。

10. Where are the two speakers?

A. In a shopping center. B. On a plane. C. At an airport.

11. What was the man most satisfied with?

A. The total environment.

B. The prices in the duty-free shop.

C. The distance from the Gate to Immigration.

12. What can we learn about the man?

A. He is from Canada.

B. He has just got his suitcase.

C. He is leaving for an Asian country.

听第9段材料，回答第13至15题。

13. When is the meeting held?

A. On Thursday evening. B. On Sunday morning. C. On Sunday evening.

14. Why do people need to pay ￡3 each week?

A. To pay for heating. B. To rent the hall. C. To collect information.

15. Why does the man make the phone call?

A. To arrange a weekly meeting.

B. To provide a sports programme.

C. To introduce the volleyball club.

第三节（共5小题；每小题1.5分，共7.5分）

听下面一段对话，完成第16至20五道小题，每小题仅填写一个词。听对话前，你将有20秒钟的时间阅读试．．

题，听完后你将有60秒钟的作答时间。这段对话你将听两遍。

第二部分：知识运用（共两节, 45分）

21. I don’t think she visited the exhibition this morning, ______ she was with me at that time.

A. though B. or C. but D. for

22. If you go to buy the top best-selling CD, please get ______ for me.

A. one B. it C. this D. that

23. ––I think the paper is taking you a long time to write.

––I ______ on it for almost a month now.

A. worked B. was working C. am working D. have been working

24. They have quite a few suggestions about ______ the service can be improved.

A. that B. why C. how D. what

25. ______ exactly what was wrong with him, the doctors gave him a complete examination.

A. To discover B. Discovering C. Discovered D. Having been discovered

26. ––Do you mind if I go out this evening?

––I don’t mind what you do ______ you let me know ahead of time.

A. ever since B. in case C. as long as D. even though

27. Please wear your best clothes on Monday, as your class photos ______ then.

A. will take B. will be taken C. have taken D. have been taken

28. Thanks for your useful advice; otherwise I ______ such rapid progress.

A. didn’t make B. couldn’t have made C. hadn’t made D. shouldn’t have made

29. We have a learning center ______ kids do independent and self-directed learning activities.

A. which B. when C. where D. whose

30. ––Did you have to do much for the dinner party?

––Helen ______ everything by the time I got home.

A. finished B. was finishing C. would finish D. had finished

31. To tell the truth, I didn’t expect that there were so many people ______ the idea.

A. supported B. supporting C. to support D. having supported

32. An accident happened on the main road. That is ______ traffic seemed to slow suddenly.

A. why B. how C. when D. what

33. ––Is this tea good cold as well?

––______ with ice, this tea is especially delicious.

A. Served B. Serving C. Having served D. To be served

34. They’ve seen many famous scholars in the conference. How I wish I ______ it!

A. have attended B. will attend C. would attend D. had attended

35. ______ he is remembered for is his humorous style when he is talking.

A. Where B. That C. What D. How

第二节完形填空（共20小题；每小题1.5分，共30分）

Do What You Enjoy

__50__ one ’s comfortable life is not easy. I ’ve learned this from my father, and I can say no matter whether the __51__ is good or bad, it is __52__ doing one’s favorite. When we do something we love, it gives us extra __53__ to meet our goals, which are associated with psychological well-being and health. As long as we have no __54__ and give it a try, we are forced to push against ourselves. After all we all want to be where we are __55__ ourselves.

36. A. lose

37. A. risks

38. A. promised

39. A. lucky

40. A. concern

41. A. value

42. A. sensitive

43. A. Besides

44. A. schedule

45. A. wonder

46. A. limited

47. A. confused B. stop B. turns B. enjoyed B. safe B. pleasure B. honor B. cautious B. Therefore B. career B. explain B. predicted B. shocked C. share C. steps C. admitted C. comfortable C. strength C. control C. optimistic C. However C. reform C. blame C. tested C. discouraged D. continue D. suggestions D. adjusted D. special D. talent D. relief D. successful D. Meanwhile D. competition D. conclude D. affected D. attracted

48. A. free

49. A. satisfaction

50. A. Protecting

51. A. function

52. A. simple

53. A. motivation

54. A. rights

55. A. convincing

B. certain B. sympathy B. Selecting B. result B. normal B. consideration B. faults B. evaluating C. good C. responsibility C. Leaving C. signal C. popular C. occupation C. regrets C. representing D. real D. security D. Arranging D. attitude D. worth D. qualification D. excuses D. challenging

第三部分：阅读理解（共两节，40分）

D. Instruct owners how to operate businesses effectively.

57. How do the members feel about themselves as a part of B1G1?

A. Confident. B. Proud. C. Generous. D. Energetic.

58. What is the purpose of the passage?

A. To invite businesses to B1G1.

C. To describe the gifts B1G1 gives.

I Was the Doughnut Lady

In university I had a part-time job at a shop that sold doughnuts and coffee. Situated on a

block where several buses stopped, it served the people who had a few minutes to wait for their

bus. doughnuts B. To promote the products B1G1 sells. D. To introduce the activities B1G1 involves.

Every afternoon around four o’clock, a group of schoolchildren would burst into the shop, and business would come to a stop. Adults would glance in, see the crowd and pass on. But I didn’t mind if the children waited for their bus inside. Sometimes I would hand out a bus fare when a ticket went missing—always repaid the next day. On snowy days I would give away some doughnuts. I would lock the door at closing time, and we waited in the warm shop until their bus finally arrived.

So I was the Doughnut Lady. I not only received a title, but became a landmark.

Now I think about all the people who keep an eye on my own children. They become, well, Doughnut Ladies. Like the men at the skating rink (滑冰场), who let my boys ring home; Or the bus driver who drove my daughter to her stop at the end of the route at night but wouldn’t leave until I arrived to pick her up; Or that nice police officer who took pity on my boys walking home in the rain when I was at work—even though the phone rang all the next day with calls from curious neighbors. ―Was that a police car I saw at your house last night?‖

That wasn’t a police car. That was a Doughnut Lady.

59. According to the passage, the author sometimes ______.

A. sold bus tickets to the children B. gave the children free doughnuts

C. did business with the children’s help D. called the children’s parents to pick them up

60. By saying ―…it wasn’t a big deal (Para. 4),‖ the author meant that ______.

A. she hadn’t done anything significant B. she hadn’t spent much time with the children

C. she hadn’t made a lot of money from the children D. she hadn’t found it hard to get along with the children

61. What can we learn about the police officer?

A. He took the boys to the police station. B. He helped the boys look for their mother.

C. He drove the boys back home in a police car. D. He managed to make sure of the boys’ identity.

62. The passage suggests that ______.

A. running a business requires skill

C. devotion should be everything in life B. taking responsibility is a moral virtue D. there are always no small acts of kindness

“We haven’t found anything that we can’t recycle! ”

Cigarette ends are everywhere —littering our streets and beaches —and for decades they’ve been thought o f as ―unrecyclable‖. But a New Jersey based company, called TerraCycle, has taken on the challenge, and has come up with a way to recycle millions of cigarette ends and turn them into industrial plastic products. Its aim is to recycle things that people normally consider impossible to reuse.

Obviously it would be even better for the environment if everyone just stopped smoking, but the statistics show that although there has been an increase in anti-smoking ads and messaging, between 2000 and 2014, global sales of cigarettes ends up in waterways, cigarette ends can surely pollute the surrounding environment. ―It only takes a single cigarette end to pollute a liter of water,‖ TerraCycle founder, Tom Szaky, said. ―Animals can also mistake littered cigarette ends for food.‖

So how do you go about turning all those poisonous ends into something useful? TerraCycle does this by first breaking them down into separate parts. They mix the remaining materials, such as the tobacco and the paper, with other kinds of rubbish, and use it on non-agricultural land, such as golf courses. The filters (过滤嘴) are a little harder. To recycle these, TerraCycle first makes them clean and cuts them into small pieces, and then combines them with other recycled materials, making them into liquid for industrial plastic products.

―We haven’t found anything that we can’t recycle,‖ communications director of TerraCycle, Albe Zakes, said. ―But with the amount and variety of packaging and litter in the world, we are always looking for new waste streams to address.‖

63. What does TerraCycle intend to do?

A. Search for recyclable materials for use. B. Deal with as many cigarette ends as possible.

C. Produce new kinds of industrial plastic products. D. Recycle what used to be considered unrecyclable.

64. The underlined word ―trash ‖ in Paragraph 2 probably means ______.

A. rubbish B. poison C. disaster D. ruin

65. What does Paragraph 3 mainly talk about?

A. The effective use of cigarette ends. B. The process of recycling cigarette ends.

C. The difficulty in recycling cigarette ends. D. The reason for breaking down cigarette ends.

66. What Albe said in the last paragraph implies that ______.

A. there is more and more waste to be recycled

B. it is difficult for TerraCycle to recycle everything

C. TerraCycle is trying to meet the challenge of new waste

D. TerraCycle has successfully recycled a large amount of waste

Current Culture: Is Common Culture Alive?

The facts lead to the change that anyone can become a cultural producer today, that the culture is increasingly available everywhere you want it, and whenever you want it, not just in the two months after the movie or book came out. Cultural possibilities have multiplied as a result, but the change also means fewer cultural moments. It is easy to find the change in terms of loss of diversity of society. So what will it mean if globalization turns us into one wide world culture?

For the enthusiasts of these changes, culture is not about popular artists or books, but centers on platforms like Google and Wikipedia, where every variety of culture brings about the exchange of knowledge and ideas, and makes connections across boundaries. It is perhaps debatable whether two people who have participated in such websites, but in totally different corners of them, have had a cultural experience in common. In fact, these platforms become very successful with a large crowd of people, who build things together, share information, and forward articles back and forth.

There are still more questions. What does it mean for the future of countries that culture now goes beyond the limits of the nation? Is there anything to defend and preserve in the passing cultural world, or is that merely to favor pen over printing press, horse over automobile?

Up to now a growing quantity of culture has been globally spreading and developing. More individuals (个人) than ever have the chances to be makers of culture, even if that means more to choose from and fewer standards to be reached in common. What it means is this strange feeling: that of being more connected than ever, with one-click access to so much of the cultural harvest around the world, and yet, of being starved for having similar interests and opinions with others, concerned only with ourselves.

67. In Paragraph 1 the author indicates ______.

A. the missing of common culture B. the cultural diversity among people

C. the disadvantage in the digitizing society D. the double standard of cultural evaluation

68. It can be inferred from Paragraph 3 that ______.

A. people feel satisfied with the current culture

B. enthusiasts look for current culture from famous artists

C. disappearance of common culture is a problem to be solved

D. common culture may exit into websites that connect the world

69. According to the author, the increase of cultural possibilities can be caused by ______.

A. agreement with common culture

C. popular artists and books available B. individuals as cultural producers D. a reduction in development of culture

70. What is the author’s attitude towards current culture?

A. Uninterested. B. Approving. C. Uncertain. D. Critical.

第二节（共5小题；每小题2分，共10分）

Sponsorship in Sport

Sponsorship in sport is usually in the form of financial assistance offered by a commercial organization to a person or a team in return for publicity.

___72___ The organizers of the Olympic Games have been criticized for accepting sponsorship from fast food companies. People question why the organizers take money from such companies. Public health experts believe if we really want to promote health alongside excellence in sport, then it must be linked by approvals for products which support good health. ___73___

However, such commercialization sometimes means compromise, and in fact, for some less popular sports it may be a negative factor, and it may even result in the end of that sporting code. Sports which are seen as less popular and therefore less commercially successful can no longer attract sponsors. ___75___ The uneven distribution of sponsorship could lead to the end of some less popular sports, and could reduce our freedom of sporting choice.

A. It shouldn’t be related to any unhealthy products.

B. Sponsorship may mislead players about sporting choices.

C. However, this has caused serious arguments for some major events.

D. The end goal for the sponsors is to deliver value and growth for their brands.

E. It also promotes participation at grassroots level, bringing sports to everyone.

F. Tax relief is another advantage, which means sponsorship can help to save money.

G. Sponsorship may create the situation of giving with the one hand and taking with the other.

第四部分：书面表达（共两节，35分）

第一节（15分）

1. 推荐一个作品；

2. 简单介绍该作品；

3. 说明推荐的理由。

注意：1. 词数不少于50；

2. 信的开头和结尾已给出，不计入总词数。

Dear Jim,

_______________________________________________________________________________

Yours,

Li Hua

第二节（20分）

注意：词数不少于60。

提示词：共享单车

shared bicycle

Our Meaningful Work

_______________________________________________________________________________

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