2020年成人英語三級《完形填空》模擬練習(xí)(15)

2020年成人英語三級《完形填空》模擬練習(xí)(15)

Ecology is the science of how living creatures and plants exist together and depend on each other and on the local environment. Where an environment is undisturbed， the ecology of an area is (1) balance， but if a creature is exterminated(滅絕)or an alien(異類)species (2)， then the balance of nature will be (3)。

Man is a part of the (4) and has done more to upset the ecology during (5) short span on earth than (6) other living creature. He has done this by his ignorance， his (7)，his thoughtless foolishness and his uncontrolled wastefulness. He has poisoned the(8) and polluted both land and water. He has wasted the earth‘s natural resources with no (9) for the future， and has thought out the most devastating ways of killing his fellow men and every other sort of life at the same time.

Since man has done so much (10)，it is (11) to man to try to put matters right — if it is not already too (12)。If there is to be any remedy for our ills， that remedy ultimately lies in the hands of the (13)，and the sooner they start doing something about it， the (14)。

One of the main (15) of the earth‘s troubles is that the world is overpopulated and that this overpopulation is growing (16) an ever-increasing rate. At the same time we are (17) up our natural resources—fuels and mineral ores — at an ever-increasing speed with no hope of replacing them. For many years the earth has been unable to (18) enough food for these rapidly expanding populations and the position is steadily deteriorating (19) the fertility of some of our richest soils has been lost and vast areas that were (20) fertile lands have turned into barren deserts.

1. A.in B.out C.of D.off

2. A.discovered B.introduced C.brought D.killed

3. A.changed B.troubled C.disturbed D.damaged

4. A.environment B.situation C.science D.condition

5. A.their B.one‘s C.its D.his

6. A.any B.the C.all D.most

7. A.greedy B.greed C.hope D.desire

8. A.sky B.heaven C.atmosphere D.space

9. A.feelings B.thought C.purpose D.idea

10. A.destroy B.injury C.damage D.harm

11. A.up B.due C.necessary D.owing

12. A.late B.soon C.long D.distant

13. A.old B.adult C.young D.future

14. A.better B.best C.quicker D.perfect

15. A.reasons B.effects C.results D.causes

16. A.in B.at C.with D.by

17. A.using B.wasting C.giving D.drawing

18. A.produce B.support C.supply D.provide

19. A.until B.since C.when D.whereas

20. A.ever B.once C.since D.till

2020年成人英語三級《完形填空》模擬練習(xí)答案見下頁

答案：

1. Best Answer：C

詳解：“be of+一個抽象名詞”是固定用法，意思是“具有…的，是…的”;而in balance意為“(生命)處于危急狀態(tài)中;(命運)未定”;out of balance和off balance同義，意思是“不平衡”。

2. BestAnswer：B

詳解：本句大意是說有兩種情況會導(dǎo)致生態(tài)失衡：一是某一動物的滅絕，另一種情況是異類侵入。故應(yīng)選introduce.

3. BestAnswer：C

詳解：根據(jù)上面一題的解釋，平衡被“打破”即被擾亂，英文中常用disturb和upset這兩個詞，其他三項搭配不當(dāng)。

4. BestAnswer：A

詳解：本篇討論的是人與自然環(huán)境之間的關(guān)系，認為人與環(huán)境密不可分，故應(yīng)選environment，而situation意為“形勢，狀況;位置，地點”;condition意為“狀況，狀態(tài);條件，前提”，當(dāng)其表示“環(huán)境、形勢”時須用復(fù)數(shù)。

5. BestAnswer：D

詳解：根據(jù)上下文應(yīng)選his，代替man‘s.

6. BestAnswer：A

詳解：than any other living creature比其他任何生物，泛指除人以外的一切生物，故不能選B項和D項;選C則將人也包括在內(nèi)。

7. BestAnswer：B

詳解：文中ignorance，thoughtless foolishness都是貶義詞，故選B項;A是形容詞，不合句法;C是褒義詞;D是個中性詞。

8. BestAnswer：C

詳解：根據(jù)后半句的大地和水域，應(yīng)選“大氣”即atmosphere.

9. BestAnswer：B

詳解：have no thought for是固定詞組，意思是“不考慮……”。

10. BestAnswer：C

詳解：do damage to也是固定詞組，意思是“損害……”，其余三項搭配不當(dāng)。

11. BestAnswer：A

詳解：be up to sb.意思是“該由…負責(zé);輪到……”，而due to和owing to的意思是“由于”。

12. BestAnswer：A

詳解：這句話后半句意思是“如果還不算太晚的話”，選soon則矛盾，選項C、D根本不沾邊。

13. BestAnswer：C

詳解：按照上下文，應(yīng)該由年輕人去完成，故選the young.

14. BestAnswer：A

詳解：the sooner…the better越早越好，本題考the more…the more…即兩個比較級連用。

15. BestAnswer：D

詳解：causes一般指客觀原因，而reasons則表示主觀原因，故應(yīng)選前者;effects和results都表示結(jié)果，選它們則因果關(guān)系顛倒。

16. BestAnswer：B

詳解：與后面的名詞rate搭配，必須用介詞at.

17. BestAnswer：A

詳解：use up是固定詞組，意為“用完，用盡，耗盡”。

18. BestAnswer：D

詳解：provide sth for意為“為…提供”，而supply的意思是“供應(yīng)，供給;滿足，彌補”，根據(jù)句意應(yīng)選前者。

19. BestAnswer：A

詳解：根據(jù)上下文應(yīng)選until“直到…”，而不是since“自從”。

20. BestAnswer：B

詳解：once意為“曾經(jīng)，一度”，符合句意，故選之;而ever的準(zhǔn)確含義是“在任何時候，從來”。

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