问答题Practice 2　　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. However, special care must be taken in l new blood for you. If the blood is too differ

Practice 2　　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. However, special care must be taken in  l new blood for you. If the blood is too 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 2 a person’s blood type, which, like hair color and height, is 3 from parents.　　Because of substances contained in each type, the four groups must be transfused 4 . 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；hence, it is often called the universal 5 . For the opposite reason. AB is sometimes called the universal 6 . However, because so many reactions can occur in transfusions, patients usually receive only salt or plasma. until their blood can be 7 as exactly as possible in the blood bank of a hospital. In this way. it is possible to 8 any bad reactions to the transfusion.　　There is a relationship between your blood type and your 9 . 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 10 . For example, some American Indian groups have nearly 100 percent type O.[A] selecting 　　　[B] avoid　　　　　 [C] carefully[D] cover　　　　　 [E] inherited 　　　[F] percentages[G] recipient 　　　[H] matched 　　　　[I] indicate[J] nationality　　 [K] simulating 　　 [L] donor[M] pursuit 　　　　[N] liberated　　　 [O] meaningfully