Question

Do you know blood types?
Special care must be taken in selecting new blood for a badly injured person, who would be killed by the transfusion (輸血) if the blood is too different from his own.
There are four basic types of blood A. B. A B. and O. Blood type, like hair and height, comes from parents. Basically, A and B can not be mixed. AB, sometimes called the universal recipient (萬(wàn)能受血者), may receive A or B,. O type, often called the universal donor (萬(wàn)能輸血者), gives his blood to any other group. Patients usually receive nothing, but salt or plasma (血漿) until their blood can be matched as exactly as possible in the blood bank of a hospital. There is a relationship between your blood type and your nationality (國(guó)籍). Among Europeans, about 42 % have type A while 45 % have type O. The fewest is the type B.
【小題1】Which of the following show the correct relationship in blood transfusion ("→"means giving blood to...)?
   

A．

B．

C．

D．

【小題2】Usually person who has been injured and lost too much blood should be given a blood transfusion______.

A．a(chǎn)fter he receives salt and plasma	B．before he feels uncomfortable
C．when the new blood fits his body	D．a(chǎn)s soon as accident happens

【小題3】From this passage we can know that among Europeans ______ 13 % have the type B.
A. about 　　B. no more than 　　C. less than 　　D. at most

Answer 1

【小題1】D
【小題2】C
【小題3】C

解析試題分析：本文講述了血型方面的有關(guān)知識(shí)，可知AB是萬(wàn)能受血者；O是萬(wàn)能輸血者。
【小題1】D 推理題。根據(jù)第二段前三行There are four basic types of blood A. B. A B. and O. Blood type, like hair and height, comes from parents. Basically, A and B can not be mixed. AB, sometimes called the universal recipient (萬(wàn)能受血者), may receive A or B,. O type, often called the universal donor (萬(wàn)能輸血者), gives his blood to any other group.可知AB是萬(wàn)能受血者；O是萬(wàn)能輸血者。故D項(xiàng)內(nèi)容正確。
【小題2】C 細(xì)節(jié)題。根據(jù)第二段4,5行Patients usually receive nothing, but salt or plasma (血漿) until their blood can be matched as exactly as possible in the blood bank of a hospital說(shuō)明直到血型相配以后才能輸血。故C正確。
【小題3】C 細(xì)節(jié)題。根據(jù)文章最后一句Among Europeans, about 42 % have type A while 45 % have type O. The fewest is the type B. 說(shuō)明少于13 %的人是B型血。故C正確。
考點(diǎn)：考查科普知識(shí)類短文
點(diǎn)評(píng)：本文講述了血型方面的有關(guān)知識(shí)，文章基本上是考查細(xì)節(jié)題，對(duì)此類題型考生可以首先從問(wèn)題中找到關(guān)鍵詞，然后以此為線索，運(yùn)用略讀及查閱的技巧在文中迅速尋找這一細(xì)節(jié)，找到后再把這一部分內(nèi)容仔細(xì)閱讀一遍，仔細(xì)比較所給選項(xiàng)與文中細(xì)節(jié)的細(xì)微區(qū)別，在準(zhǔn)確理解細(xì)節(jié)的前提下，最后確定最佳答案。