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Keys: 1) I didn't touch your precious computer! 2)The doll is very precious to my little sister. 3)Fresh air is precious in Guangzhou.

5. panic (panicked; panicked) v.惊慌n.惊慌，恐慌

[重点用法]

in a panic感到惊慌;惊恐地

[典例]

1) The children panicked when the plans flied over the city.

当飞机飞过城市的上空,孩子们惊慌失措.

2) The thunder panicked the baby.雷声吓坏了婴儿

3) People in panic had nothing to do but wait for death.惊恐万分的人们只好坐以待毙.

[练习] 汉译英

1) 当意识到自己的钱包被偷了，这个农民感到很惊慌。

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2) 当大地摇晃时，所有的人们都惊慌逃散。

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Keys: 1) The peasant panicked when he realized he had the wallet stolen. 2) All the people fled in a panic as the earth shook.

6. diverse adj.多种多样的，不同的

[典例]

1) Her interests are very diverse. 她的兴趣非常广泛。

2) They are the people from diverse cultures. 他们是些有着不同文化背景的人。

3) The program deals with subjects as diverse as pop music and Beijing Opera.

节目涉及从流行音乐到京剧这样形形色色的题材。

[重点用法]

diversity n. 差异, 多样性；

diversify v. 使多样化, 作多样性的投资

various adj. 不同的, 各种各样的, 多方面的, 多样的；

different adj. 不同的

[练习]用diverse, diversity, diversify填空（单词可重复使用，有的单词也可以不用）

1) There are _______ opinions about it.

2) Hill and woods ________ the landscape.

3) A factory must try to _________ for further development.

4) A great _______ of computers be made in Guangzhou.

Keys: 1) diverse 2) diversify 3) diversify 4) diversity

7. guarantee vt.保证，担保 n.保证, 保证书,保修

[重点用法]