1～3岁儿童每人氟的适宜和安全摄入量(mg/d)是A．0.1～0.4 B．0.5～1

根据句意及所给首字母提示，完成句中所缺的单词。

1. If you are ill,you should take some m________ and have a good rest.

2. Millions of t________ from all over the world came to Shanghai during the World Expo.

3. The 2011 New Year's Concert in CCTV was a great s________.

4. It's i________ for a student to learn a foreign language well.

5. The young mail is a u________ student.He majors in English.

He asked me, “Did you see my sister last night?”

----He asked me __________

A．if I had seen his sister the night before.

B．whether I had seen your sister the night before.

C．did I have seen his sister the night before.

D．that I saw his sister the night before.

防止高频电磁场对人体作用的正确措施是（）

A.场源屏蔽，远距离操作，合理布局

B.场源屏蔽，远距离操作，合理通风

C.场源屏蔽，湿式作业，合理布局

D.个人防护，远距离操作，合理通风

E.场源屏蔽，合理布局，合理通风

道德关系

小儿急性肾小球肾炎风水相搏证浮肿先见于头面部的原因是风性向上。