词汇运用。

1. You should remember that __________ (微笑) always helps.

2. He lives ___________ (孤单地) in a small town, but he never feels lonely.

3. The music ___________(听起来)so wonderful.

4. She has __________ (从未) wanted to visit the USA.

5. Would you please show me __________ (另外的) one? I don't like this camera.

6. I have been to America _________ (两次).

7. He gave me a few pieces of ___________(建议)on learning English.

8. He ________ (退学) out of school because his family was poor.

9. Tom's father has been  ___________ (出国) many times.

10. Mozart was a great _______  (音乐家) in Austria.

麻黄的药用部位是（）