3 . You should never _________ anything on a theory that proves impractical in practice.

A．focus

B．base

C．reflect

D．impose

6 . 假设你是高一学生李华，得知你的美国笔友Jack暑假要来中国旅游，他对中国的园林很感兴趣。请你根据下面的五句汉语意思及括号内的要求，补全这封写给他的电子邮件。文章的开头和结尾已给出。
Dear Jack,

It has been a great pleasure to hear from you.     1     既然中国很多景点都已经被你游览过了，这次我决定向你推荐留园（the Lingering Garden）。（现在完成时的被动语态，recommend）

    2    无论游客什么时候来到留园，他们都会被那里的景色深深地吸引。（-ever让步状语从句）    3     只有通过设计师们的努力，中国的园林（the Chinese gardens）才能结合古代的美丽和现代的技术。（only部分倒装，combine）    4     重要的是，你要知道它们都是中国的工人用手创造出来的。（it形式主语，主语从句）

    5     门票已经提前预定好了，我现在非常渴望你的到来。（with的复合结构，eager）Please inform me of your flight information, and I’ll be glad to pick you up at the airport! See you soon!

Yours,

Li Hua

7 . With everything settled down finally, Harry sank into a chair and ________ with relief.

A．shivered

B．frowned

C．sighed

D．shook

8 . 选用方框中的适当短语.

A. adapted to   B. remind of   C. watch over   D. dying out   E. due to F. has made progress   G. belong to   H. break away from   I. as well as   J. access to

1. People start an operation trying to save a species of crocodile (鳄鱼) from ________.
2. In the past few weeks, Tom ________ in English steadily.
3. Young adults must ________ their parents’ control in order to achieve independence.
4. His son, ________ many other American kids, is addicted to surfing the Internet.
5. As time went by, I gradually ________ the school life.
6. The photos often ________ him ________ the golden years of his life.
7. It is said that each country has its own experts to ________ the changes.
8. Mistakes ________ carelessness may have serious consequences.
9. They, who are dressed in fancy clothes, ________ a younger generation.
10. Everyone has ________ the internet and knows how to use the technology.

9 . ________, this means “You are what you eat.”
简单地说，这句话就是“人如其食”的意思。