根据汉语或首字母提示完成单词。

1. He is so            （精疲力竭的）that he can do nothing now.

2. Could you             (描述) our classroom in English?

3. If you're free, I'd like to I ____ you to dinner with my family.

4. There is nothing in the fridge. It's e           .

5.I had learned a lot about planting from that knowledgeable f______．

关于医学模式的本质，下列描述最正确的是（）

A.医学实践的总结

B.对疾病的总结

C.医学理论研究的发展

D.临床医学实践的发展

E.卫生管理、卫生发展战略研究的发展