单词拼写。

1. I can't c_______ with him, my telephone doesn't work.

2. He can't eat much because he s_______ from stomachache.

3. I'm in a difficult s________ and I don't know what to do.

4. My roommate happens to have moved away so you can s_______ the room with me.

5. He sent a s_______ of stamps as my birthday gift.

6. You needn't have been so angry with her, for she broke the glass accidentally, not on p________.

7. Young girls and boys are c_______ about rock music.

8. If you want to read quickly and well, you should increase your ________(词汇量).

9. A dead body was found under the bridge, but it was hard to determine the _______(身份).

10. Our _______(政府) is coming to care more about the poor and weak.

左旋多巴治疗帕金森病的机制是：

A．阻断黑质中胆碱受体
B．降低黑质中乙酰胆碱的含量
C．提高纹状体中5-羟色胺含量
D．提高黑质纹状体中乙酰胆碱的含量
E．左旋多巴在脑内转变为多巴胺，补充纹状体内多巴胺的不足