问题 单项选择题 A1/A2型题

下列哪种说法不符合抗凝血酶活性及抗原测定()

A.待测标本不宜用肝素抗凝

B.发色底物法测AT活性,显色的深浅与AT呈正相关

C.抗原与活性同时下降为CRM-型AT缺乏症

D.抗原正常,活性下降为CRM+型AT缺乏症

E.待测标本不宜反复冻融

答案

参考答案:B

阅读理解

阅读理解。

     A driver stopped his car on a street side to have a rest. As he lay down in the seat and closed his

eyes,a person came up and knocked at the window to ask the time. The driver opened his eyes and

looked at his watch:"It's 8:05,"he said. Then he went to sleep again. But soon he was waken up again

because a second person was knocking at the window. "Sir,do you know the time?"he asked. The driver

looked at his watch again,and told him it was half past eight.

     In this way,the driver thought he could not have a good rest,so he wrote a short note(纸条)and stuck(贴)it on the window for all to see. It said,"I don't know the time. "

     Again,he lay down in the seat for his sleep. A few minutes later,a third person came and began to

knock at the window,"Hey,sir,"he said. "It's a quarter to nine. "

1. How many persons asked the driver about the time?

A. One.

B. Two.

C. Three.

D. Four.

2. The first person knocked at the window of the car _______.

A. at five to eight

B. at half past eight

C. at five past eight

D. at a quarter to nine

3. Why did the driver write a note and stick it on the window?

A. Because he didn't want anybody to trouble him.

B. Because he didn't know the time.

C. Because he needed somebody to wake him up.

D. Because he wanted somebody to tell him the time.

4. The third person knocked at the window to_______.

A. tell him what time it was    

B. ask him not to sleep

C. see if the driver was sleeping  

D. ask him the time

5. The driver _______ in his car.

A. had a good sleep

B. had no seat  

C. didn't have a good rest

D. always closed his eyes

单项选择题