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问题 单项选择题 A型题

Ag与Ab结合的部位是（）

A.VL

B.VH+VL

C.Fc

D.VH

E.CH

答案

参考答案：B

解析：用胃蛋白酶水解IgG，可分解为F(ab')2和Fc两部分，F(ab')2是与抗原结合的部位，VH+V是F(ab')2中的高变区，直接与抗原相结合。

阅读理解

A bus stops at a small bus stop. A man is hungry and he wants to buy some cakes. It’s raining hard, he doesn’t want to go out in the rain. He sees a boy. “Come here, boy!” he cries. “Do you know how much the cakes are?” The boy says yes. The man gives the boy four dollars(美元) and asks him to buy two cakes. “One is for you and one is for me.” Three minutes later, the boy comes back. He’s eating a cake. He gives the man two dollars and says: “Sorry, there is only one cake left.”

小题1: Where is the man?

A．He’s near the bus.

B．He is at home.

C．He’s on the bus.

D．He is in the car.小题2:The man doesn’t want to go out because.

A．he is tired

B．he doesn’t like rain

C．he is hungry

D．it’s raining hard小题3:How many cakes does the boy get?

A．One.

B．Two.

C．Three.

D．Four.小题4:How much are they if（假如）we buy five cakes?

A．Five dollars.

B．Four dollars.

C．Ten dollars.

D．Fifteen dollars.小题5:What’s the result (结果)?

A．The man eats the cake.

B．The boy eats the cake.

C．The boy doesn’t eat the cake.

D．The boy and the man both eat the cakes.
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单项选择题

第8－14 题为套题：李某是某单位工会 * * ，负责为单位职工购买商业团体保险。在工作中，他发现团体保险与自己私人购买的个人保险有很大的不同，并不是简单地将人数加总的保险形式。

在合同订立过程中，团体保险合同的特征是（ ）。

A．循环性

B．射幸性

C．谈判协商性

D．随和性
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