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"(輸血).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.a(chǎn)re unhealthy people
B.a(chǎn)re AB-group people
C.have lost a lot of blood
D.a(chǎn)re 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:這篇短文主要講述血在我們的生命中重要的東西,人失血太多有可能失去生命,獻(xiàn)血既可以救人又可以在自己需要時使用,所以獻(xiàn)血對自己是有好處的.

解答 55-57.DBA
55題答案:D 推理判斷題.根據(jù)短文第三段Later,doctors find that we do not all have the same kind of blood.描述,可知我們的血型不是都一樣.可以推理輸血后死亡是由于血型錯誤.故選D.
56題答案:B 是非判斷題.根據(jù)據(jù)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,醫(yī)生告訴我我可以給其他任何人安全輸血,可知B正確.故選B.
57題答案:A 推理判斷題.根據(jù)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,獻(xiàn)血既可以救人又可以在自己需要時使用,所以獻(xiàn)血對自己是有好處的,故選A

點(diǎn)評 本文是一篇日常生活類閱讀,題目涉及多道細(xì)節(jié)理解題,做題時結(jié)合原文和題目有針對 性找出相關(guān)語句進(jìn)行仔細(xì)分析,結(jié)合選項(xiàng)選出正確答案.推理判斷也是要在抓住關(guān)鍵句子的基礎(chǔ)上合理的分析才能得出正確的答案.

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