问题 单项选择题 A1/A2型题

关于内源性生物素活性的说法正确的是()。

A.生物素是一种消化酶

B.肝、肾等组织内生物素含量最少

C.在用ABC法染色时可引起非特异性染色

D.预先用生物素作用可增强敏感性

E.内源性生物素丰富的组织不适合进行PAP法染色

答案

参考答案:C

翻译题

A passenger(乘客) told a flight attendant that he needed a cup of water to take his medicine just as the plane was taking off. She told him that she would bring him the    1   in ten minutes.

Thirty minutes later, when the passenger’s ring for service sounded, the flight attendant felt    2  . She was so busy that she has forgotten to give him the water.    3  , the passenger couldn’t take his medicine on time. She hurried over to him with a cup of water, but he    4  it.

In the following hours on the flight, each time the flight attendant passed by the passenger, she would ask him with a smile if he needed anything. But he asked for    5 .

When he was getting  6   the plane, the passenger asked the flight attendant to hand him a service review(评论) card. She knew that he would write something    7 , but she politely handed it to him.

Later, she looked at the card and a smile came over her face. “On the flight, you asked me whether I needed    8  or not 12 times in all,” the passenger wrote. “How can I refuse your 12 sincere    9  ?”

   10   after someone does something wrong, no one can say no to 12 sincere smiles.

小题1:   A. water        B. medicine           C. juice

小题2:A. excited    B. surprised      C. worried

小题3:A. After all     B. So far          C. As a result

小题4:A. took            B. refused                 C. threw

小题5:A. nothing         B. everything       C. something

小题6: A. on             B. off                          C. to

小题7:   A. unfair                 B. pleasant          C. bad

小题8: A. help                   B. drink            C. food

小题9:. A. smiles          B. invitations           C. advice

小题10:. A. Though      B. Even              C. If

问答题