衛生類模擬試題：閱讀理解Types of Blood

　　Types of Blood You have been badly injured in a car accident. It is necessary to give you a blood transfusion because you lost a great deal of blood in the accident. Howev er， special care must be taken in selecting new blood for you. If the blood is t oo different from your own， the transfusion could kill you. There are four basic types of blood: A， B， AB， and O. A simple test can ind icate a person’s blood type. Everybody is born with one of these four types of b lood. Blood type， like hair color and height， is inherited from parents. Because of substances contained in each type， the four groups must be transf used carefully. Basically， A and B cannot be mixed. A and B cannot receive AB， b ut AB may receive A or B. O can give to any other group; hence， it is often call ed the universal donor. For the opposite reason， AB is sometimes called the univ ersal recipient. However， because so many reactions can occur in transfusions， p atients usually receive only salt or plasma ( liquid ) until their blood can be matched as exactly as possible in the blood bank of a 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. Among Europeans and people of European ancestry， about 42 percent have type A while 45 percent have type O. The rarest is type AB. Other races have different percenta ges. For example， some American Indian groups have nearly 100 percent type O.

　　21、If a patient can receive type A blood，____

　　A.he must have type A blood.

　　B.he can also receive type AB blood.

　　C.he can’t have type B blood.

　　D.he can’t have type AB blood.

　　22、(同21題)The word Transfusion" is closest in meaning to____

　　A.transfer.

　　B.check.

　　C.treatment.

　　D.mixture.

　　23、(同21題)If you need a transfusion， the best and safest blood for you is____

　　A.type AB.

　　B.type O .

　　C.exactly the same type as yours.

　　D.a mixture of salt and plasma.

　　24、(同21題)According to the passage， the third most common blood type for Europeans is____

　　A.A..

　　B.B.

　　C.AB.

　　D.O.

　　25、(同21題)The passage is most probably written for____

　　A.the general reader.

　　B.the medical student.

　　C.the blood expert.

　　D.people badly injured in a car accident.