Question

閱讀下面短文，按照句子結(jié)構(gòu)的語法性和上下文連貫的要求，在空格處填入一個適當(dāng)?shù)脑~或使用括號中詞語的正確形式填空，并將答案填寫在答題卡的相應(yīng)位置上。

If the population of the Earth keeps on increasing at its present rate, there will eventually not be enough resources 1.________(leave) to support life on the planet. By the middle of the 21st century, if present trends continue, we2._________（use）up all the oil that drives our cars, for example. Even if scientists develop new ways of feeding the human race, the crowded conditions on the earth will make 3. ______ necessary for us to look for open space somewhere else. But4.______ of the other planets in our solar system are capable of supporting life at present. One possible solution5.______ the problem, 6._________, has recently been suggested by an American scientist, Professor Carl Sagan. Sagan believes 7._______ before the Earth’s resources are 8._______(complete) exhausted it will be possible to change the atmosphere of Venus and therefore create a

new world almost as large as the Earth9. .The difficulty is that Venus is much hotter than the Earth. 10.________, there is only a tiny amount of water there.

Answer 1

1.left

2.will have used

3.it

4.none

5.to

6.however

7.that

8.completely

9.itself

10.Besides/Moreover/Furthermore.

【解析】

試題分析：文章大意：如果地球上的人口仍以當(dāng)前的增長率增長的話，最終地球上將沒有足夠的資源供給生命生長。面對人口急劇地增長，資源日益地短缺的困境，可能的途徑就是其他星球?qū)ふ铱臻g，比如金星。

1.

2. have used.考查將來完成時。由時間狀語by the middle of the 21st century可知要用將來完成時態(tài)。

3. it +adj “使…處于…狀態(tài)”。

4. none of“沒有一個”

5. solution to“…的解決辦法”，注意to在這是介詞。

6.

7.

8.

9. Earth itself.

10.

考點:考查對語法掌握和篇章理解能力