根据句意及词首字母提示完成单词.

1. If you have some questions, please s              them to the Lnaguage Doctor.

2. Many students want to i             their English but don't   know  what to do .

3. -What time is it ?

    -Sorry .I don't have a w             

4. You can g            the meaning of the new words when you are reading. You needn't look up every

    word in the dictionary.

5. Wang Li always feels s             when she meets strangers(陌生人).

6. Do you have any good questions to start a c             when you talk to a foreign teacher?

7. Look!How happy the little girl is ! She is   s                

8. We should r            all the new words before this weekend.

吗啡作用于中脑盖前核的阿片受体可引起（）

A．镇痛作用

B．镇咳作用

C．欣快作用

D．胃肠活动改变

E．缩瞳作用