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问题 单项选择题 A型题

硝苯地平用于高血压的治疗时常见踝部水肿，其原因主要是（）

A.血浆晶体渗透压降低

B.血浆胶体渗透压降低

C.水钠潴留

D.尿量减少

E.毛细血管扩张

答案

参考答案：E

填空题

用所给动词的适当形式填空。

1. She ______ TV too much every day. It's bad for her eyes. (watch)

2. Tom  ______  the doctor with his mother this evening. (see)

3. There is a lot of homework ______ every day. (do)

4. Each of the students  _______ a school bag. (have)

5. Where is Tony? He is _______ books in the reading room. (read)

6. You should  _______  the classroom before you go home. (clean)

7. Do you know the boy _______ Tom?(call)

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多项选择题

误差包括下列哪几种（）？

A.系统误差

B.随机误差

C.过失误差
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