题目内容

5.When you cut your skin,you bleed(流血).If a person loses a lot of blood,he will become ill and may die.Blood is very important.People have always known that.At one time,some people even drank blood to make them strong!
When doctors understand how blood goes around inside the body,they try ways of giving blood to people who need it.They take blood from the healthy people and give it to people who need it.This is called"blood transfusion"(输血).The blood goes from the arm of the healthy person into the arm of the sick person.
But there are two problems.First,it does not always work.Sometimes people die when they have blood transfusion.Later,doctors find that we do not all have the same kind of blood.There are four groups-O,A,B and AB.We all have blood of one of these groups.They also find that they can give any kind of blood to people of group AB.But they find that they must give A-group blood to A-group people and B-group blood to B-group people.I have O-group blood and the doctor told me that I could give blood to anyone else safely.
There is another problem.To give blood of the right kind,doctors have to find a person of the right blood group.Often they can not find a person in time.If they have a way to keep the blood until someone needs it,they can always have the right kind of blood.At first they find they can keep it in bottles for fifteen to twenty days.They do this by making it very cold.Then they find how to keep it longer.In the end they find a way of keeping blood for a very long time.
We call a place where we keep money a"bank".We call a place where we keep blood a"blood bank".One day,when you grow up,you may decide to give blood to a"blood bank".In this way you may stop someone from dying.Or perhaps one day you may become ill.You may need blood.The"blood bank"will give it to you.370words

55.From the passage,we learn that sometimes people die when they have blood transfusions because theyD.
A.are unhealthy people
B.are AB-group people
C.have lost a lot of blood
D.are not given the right kind of blood
56.Which of the following is true?B
A.The writer has never had a blood transfusion.
B.The writer can give blood to B-group people.
C.Doctors can give any kind of blood to the writer.
D.The writer has the same kind of blood as his father.
57.From the last paragraph of the passage,we learn thatA.
A.the writer thinks it's good to give blood to a"blood bank"
B.we may become ill if we give blood to a"blood bank"
C.many people died because they lost a lot of blood
D.blood is more important than money.

分析 文章大意:这篇短文主要讲述血在我们的生命中重要的东西,人失血太多有可能失去生命,献血既可以救人又可以在自己需要时使用,所以献血对自己是有好处的.

解答 55-57.DBA
55题答案:D 推理判断题.根据短文第三段Later,doctors find that we do not all have the same kind of blood.描述,可知我们的血型不是都一样.可以推理输血后死亡是由于血型错误.故选D.
56题答案:B 是非判断题.根据据第三段I have O-group blood and the doctor told me that I could give blood to anyone else safely.我是O型血,医生告诉我我可以给其他任何人安全输血,可知B正确.故选B.
57题答案:A 推理判断题.根据最后一段In this way you may stop someone from dying.Or perhaps one day you may become ill.You may need blood.The"blood bank"will give it to you.可知,献血既可以救人又可以在自己需要时使用,所以献血对自己是有好处的,故选A

点评 本文是一篇日常生活类阅读,题目涉及多道细节理解题,做题时结合原文和题目有针对 性找出相关语句进行仔细分析,结合选项选出正确答案.推理判断也是要在抓住关键句子的基础上合理的分析才能得出正确的答案.

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