2 . On the positive side, the ________ can bring new medical treatments, environmental protection strategies and energy production methods.

A．opera

B．tale

C．technique

D．dust

3 . 选词填空

loss; suffering; prove; vehicle; continent; breathe; site; duty; dust; ambition

1. Asia is the largest of the_________ of the world.
2. They hope this new evidence will ________her innocence.
3. She never achieved her _______ of becoming a famous writer.
4. A cloud of ________rose as the truck drove off.
5. He ________ deeply before speaking again.
6. Death finally brought an end to her ________.
7. It is my _________to report it to the police.
8. A________ has been chosen for the new school.
9. The closure of the factory will lead to a number of job ________.
10. This ________ was parked on private property.

6 . 词性转换
1. dress v. 给……穿衣服→________ n. 连衣裙；衣服
2. look v. 看；寻找→________ n. 看；眼神；神色
3. change v. 改变→________ n. 变化；改变
4. boat n. 船→________ v. 划船；荡桨
5. dust n. 灰尘；尘埃→________ v. 拂去灰尘
6. free adj. 免费的；自由的→________v. 释放；解放
7. slow adj. 缓慢的→________v. 使减速
8. clean v. 打扫→________adj. 干净的
9. close v. 关上→________adj. 近的
10. daily adj. 每天的→________ n. 日报
11. giant adj. 巨大的→________ n. 巨人