题目内容
阅读下列短文,从每题所给的四个选项中选出最佳选项。
Human Blood Types
You have been badly injured in a car accident it is necessary to give you a blood in blood transfusion because you lost a great deal of blood in the accident,however,special care must be taken in selecting new blood for you.If the blood is too different from your own,he transfusion could kill you.
There are four basic types of blood:A,B,AB and O.A simple test can tell us a person's blood type.Everybody is born with one of these four types of blood.Blood type,like hair color and height,is inherited from Parents.Because of the substances contained in each type,the four group must be trans-fused carefully.Basically,A and B cannot be mixed.A and B cannot receive AB,but AB may receive A or B.O can give to any other group;so it is often called the universal donor.For the opposite reason,AB is sometimes called the universal recipient.However,because there can be so many reactions in trans-fusions,patients usually receive only salt or plasma(血浆)until their blood can be matched as exactly as possible in the blood bank of the hospital.In this way,it is possible to avoid any bad reactions to the transfusion.
There is a relationship between your blood type and your nationality.A-among the Europeans,about 42 percent have type A while 45 percent have type O.The rarest is type AB.Other races have different percentage.For example,some American Indian groups have nearly 100 Percent type O.
1.Which of the following diagrams shows the correct relationship in blood transfusions?(giving blood to→、)
[ ]
A. |
B. |
C. |
D. |
2.Usually,a person who as been injured and lost too much bloodshould be given a blood transfusion________.
[ ]
A.after he has a good rest
B.after he receives salt or plasma
C.immediately after the accident happens
D.before there are so many reactions
3.If the blood is too different from the injured,the transfusion________.
[ ]
A.can help him greatly |
B.could save him |
C.could kill him |
D.can injure him |
4.The writer suggests that the third most common blood type among the Europeans is________.
[ ]
A.B |
B.A |
C.AB |
D.O |
5.The passage mainly tells us that________.
[ ]
A.there is only one type of blood in a person's body
B.a person's blood type is decided by hair and height
C.a person's blood type can be changed into another
D.there are four basic types of blood in a person's body
解析:
从文章第二段可以判断D图是正确的。 由第二段倒数二句可知,给病人输血时应先将受伤者的血液和医院血库里的血液准确无误地匹配后,再输血。A项仅做一个rest是不行的;C项马上输血也不行,也可从第一段最后一句看出来。 由第一段最后一句可知。 根据第三段前三句作者的排序“A型42%,O型45%,最罕见的是AB型”,可知B型排第三。 根据全文的意思和常识,可选定A。也可以采取排除法,B、C、D说法都不对。 |