You have been badly injured in a car accident. It is necessary
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 selecting 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 indicate a person's blood type, which, like hair color and height, is inherited from parents. Because of substances contained in each type, the four groups must be transfused 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; hence, it is often called the universal donor. For the opposite reason, AB is sometimes called the universal recipient. However, because so many reactions can occur in transfusions, patients usually receive only salt or plasma (liquid) until their
1、A good title for this passage is ________.
 A、Getting Blood and Plasma
 B、Special Blood Types
 C、Human Blood Types
 D、The Blood Bank of a Hospital
参考答案：C
2、The word "hence" in line 10 means _________
 A、always
 B、 often
 C、 therefore
 D、 seldom
参考答案：C
3、In a blood transfusion, it is easiest to find the acceptable type of blood for a person with the blood type of ________
 A、A
 B、 B
 C、 AB
 D、 O
参考答案：C
4、The purpose of using salt and plasma before a blood transfusion is to allow time ______.
 A、to test the reactions to the transfusion
 B、for matching the blood to be transfused with the patient's blood
 C、 for the blood to be delivered from the blood bank
 D、 to select a new type of blood for the patient
参考答案：B
5、Most Europeans have blood type _________
 A、A
 B、B
 C、O
 D、A or O
参考答案：C
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