A. curious B. worried C. particular D. mistaken

2. The 7•5 Violence in Xinjiang Province has been by the entire international community.

A. condemned B. scolded C. criticized D. blamed

3. In our school students are according to how much they know and how old they are.

A. classified B. combined C. listed D. made

4. , what you did is right. So dont be worried about it any more.

A. General speaking B. Generally speaking

C. General spoken D. Generally to speak

5. Have you looked ahead what you'll be doing in five years time?

A. about B. to C. on D. with

6. He is not very confident and always before making a decision.

A. considers B. hesitates C. reflects D. waits

7. She thought herself to her friends because her family was rich.

A. higher B. better C. richer D. superior

8. When day dawned, the stars of sight.

A. kept away B. faded out C. faded into D. died out

9. Don't sit there nothing. Come and help me with the table.

A. do B. to do C. doing D. and doing

10. No matter how frequently , the works of Beethoven still attract people all over the world.

A. performed B. performing

C. to be performed D. being performed

1完形填空

阅读下面短文，掌握其大意，然后从21-30各题所给的A、B、C和D项中，选出最佳选项，并在答题卡上将该项涂黑。

字数：203 完成时间：14分钟 难度：***

Most greenhouses look like a small glass house. Green-houses are used to grow plants, especially in the winter. Greenhouses 21 by trapping heat from the sun. The glass panes (窗玻璃) of the greenhouse let in light but keep heat from 22 . This causes the greenhouse to heat up - much like the 23 of a car parked in sunlight -- which keeps the plants 24 enough to live in winter.

The Earth' s atmosphere is all around us. It is the air that we breathe. Greenhouse gases in the atmosphere 25 much like the glass panes in a greenhouse. 26 enters the Earth's atmosphere, passing through the blanket of green- house gases. As it reaches the Earth's surface, the land, water and biosphere (生物圈) 27 its energy. Once absorbed, this energy is passed back into the 28 . Some of the energy passes back into space, but much of it 29 , trapped in the atmosphere by the greenhouse gases, causing our world to heat up.

The greenhouse 30 is important. Without it, the Earth would not be warm enough for humans to live. If the effect becomes stronger, though, it could make the Earth warmer than usual. Even a little extra warming may cause problems for humans, plants and animals.