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问题 单项选择题 A1型题

T细胞活化时只有第一信号，缺乏第二信号，其结果将导致（）

A.T细胞分裂

B.T细胞分化

C.T细胞处于克隆无能状态

D.T细胞克隆扩增

E.以上都不是

答案

参考答案：C

句型转换

同义句转换。

1. Did you go to the cinema last night?

    Did you go to the _____ last night?

2. He likes seeing a film very much.

    He _____ seeing a film very much.

3. I would like to take a walk now.

    I _____ _____ taking a walk now.

4. He often writes to his friends on Sunday.

    He often _____ _____ _____ his friends on Sunday.

5. The old man gave him a magic book.

    The old man gave a magic book _____ him.

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单项选择题

对被保险人的一般医疗费用、住院医疗费用和手术医疗费用等医疗费用提供全面保障的健康保险被称为( )。

A．综合医疗保险
B．普通医疗保险
C．医疗费用保险
D．特种医疗保险
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