1 . 用方框内短语的适当形式填空

carry out; be home to; fight off; date back to; serve as

1. In some countries, smartphones and other mobile devices ______ replacements for the traditional desktop computers.
2. Because of is simplicity, this test could ______ easily by a family doctor.
3. Chinese acrobatics (杂技) has a long history, which ______ more than two thousand years ago.
4. This zone ______ species that humans eat, such as tuna and salmon.
5. They were determined to unite to ______ the invaders.

2 . Each level of the forest forms its own little world, home________ different kinds of living things. （用适当的词填空）

3 . 汉译英
1. 对……有害 ________
2. 被用于食品生产________
3. 免疫系统 ________
4. 抵抗病菌 ________
5. 由细胞组成 ________
6. 帮你消化 ________
7. 分解/循环死亡的有机物质 ________
8. 是……的家乡，所在地 ________
9. 相比之下 ________
10. 到目前为止 ________
11. 在我们的行星上 ________
12. 长到30米长 ________
13. 重130000多公斤________

4 . 选词填空

become aware of;       be home to;       up and down;       if necessary;       make up; as well as;             in favour of;       find out;       call for;       team up with

1. The operator is very much ______ workers’ proposal in the conference.
2. He just desires a steady life, so he prefers not ______ other fellows.
3. Don’t disturb him now, who must ______ the truth of this incident.
4. The government is determined to close the country’s worst schools, ______.
5. The boy ______ a story that his waist was bitten by a snake, which made us frightened.
6. I am looking ______ for my wallet which was lost when I enjoyed the scenery.
7. It is certain that someday you ______ all your mistakes.
8. The Tibetan mountain areas ______ antelope and other rare animals.
9. I need a friend who can share my sorrows ______ my joys at his leisure.
10. The situation ______ prompt action, so a candidate is urgently wanted at present.

5 . Shanghai ________ the brand’s new China headquarters.
上海有可能成为该品牌新的中国总部所在地。

6 . 亚马逊雨林, 各种生物的家园，通过固定碳和生成氧气，为地球注入了活力，所以我们承担不起破坏这个“地球之肺”的后果。
The Amazon rainforest, _________different kinds of living things, _________ the planet by fixing carbon and producing oxygen, so we can’t afford to damage the “lungs of the earth”.