将健康人的组织或器官替代患者丧失功能的组织和器官，常常会发生

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问题单项选择题 A型题

将健康人的组织或器官替代患者丧失功能的组织和器官，常常会发生排斥反应，此时HLA分子被认为是（）

A.同种异型抗原

B.异嗜性抗原

C.异种抗原

D.同种抗原

E.移植抗原

答案

参考答案：A

单项选择题

( )主要是由各单位工会、财务部门代理，方便群众投保。

A．银行代理

B．行业代理

C．专业代理

D．单位代理

句型转换

句型转换。

1. Don't bring friends from other schools, or the teachers will ask them to leave. (改为同义句)

_____ _____ bring friends from other schools, the teachers will ask them to leave.

2. I will play volleyball if it is fine tomorrow. (对划线部分提问)

_____ _____ you _____ if it is fine tomorrow?

3. The students stood there and didn't know what they should do next. (改为同义句)

The students stood there and didn't know_____ _____ _____ next.

4. They are going to do more practice. They will win the match. (改为含有if条件句的复合句)

They_____more practice, they _____ _____ the match.

5. If you study hard, you'll catch up with others. (改为并列句)

_____ _____, or you'll fall behind others.