无偿献血
——为了那与死亡一线之隔的生命
当血液病患者急需血液来延续生命，失血过多的患者（比如大出血的产妇或手术患者）急需血液来保证生命，捐血者捐出的一袋鲜血就能给他们一个机会，而捐出一袋鲜血不会给捐血者带来伤害。也就是说：无偿献血，不用舍己就能救人，何乐而不为？
（以下请自己根据楼上提供的内容发挥）

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　　one possible version： boys and girls， recently some blood banks across the country are reported to be short of blood supplies.__________________________________ _________________________________________ _________________________________________ _________________________________________ student union boys and girls， recently some blood banks across the country are reported to be short of blood supplies. some people hold the wrong idea that 1.donating blood does harm to(献血对……有 害) the donators’ health so we shouldn’t donate our blood to others. but 2.the truth is that(事实是……) when a small amount of blood is taken out，the body will make a quick adjustment to work normally. as we know, donating blood is of great importance. blood is important to patients, without which many of them can’t survive. and to the youth in the new age, 3.not only is donating blood for free a social responsibility(无偿献血不但是社会的责任), but also it is the spirit of cooperation and sharing. we senior high school students who have a better understanding of medical knowledge should set a good example to other people. from now on, our school will 4.hold a series of activities(举行 一 系 列 活 动 ) to tell people the benefits of donating blood.do it now, starting from you and your family. student union

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　　one possible version： boys and girls， recently some blood banks across the country are reported to be short of blood supplies.__________________________________ _________________________________________ _________________________________________ _________________________________________ student union boys and girls， recently some blood banks across the country are reported to be short of blood supplies. some people hold the wrong idea that 1.donating blood does harm to(献血对……有 害) the donators’ health so we shouldn’t donate our blood to others. but 2.the truth is that(事实是……) when a small amount of blood is taken out，the body will make a quick adjustment to work normally. as we know, donating blood is of great importance. blood is important to patients, without which many of them can’t survive. and to the youth in the new age, 3.not only is donating blood for free a social responsibility(无偿献血不但是社会的责任), but also it is the spirit of cooperation and sharing. we senior high school students who have a better understanding of medical knowledge should set a good example to other people. from now on, our school will 4.hold a series of activities(举行 一 系 列 活 动 ) to tell people the benefits of donating blood.do it now, starting from you and your family. student union