Question

    For years scientists have been worried about the effects of air pollution on the earth's natural conditions. Some believe the 16 inside many houses may be more dangerous than the air outside. It may be one hundred times 17 Indoor air pollution can 18 a person to feel tired,to suffer eye-pain,headache and other 19 Some pollutants can cause breathing disorders,diseases of blood and 20 cancer. Most scientists agree that every modem house has some kind of 21 pollution.

    People pay more 22 to the problem now. It is true that when builders began making 23 and offices they did not want to waste energy. To do this they built buildings that limited the flow of air between inside and outside. They also began 24 man-made building materials. These 25 are now known to let out harmful gases. 26 the problem became more serious,scientists began searching for a 27 to deal with it. They discovered a natural pollution control system 28 building—green plants. Scientists don't really know how 29 control air pollution. They believe that a plant's leaves absorb or 30 the pollution. In 31 the plant lets out oxygen through its leaves and tiny organisations on its roots. Scientists 32 that all buildings should have one large plant or several small plants inside for every nine square metres of space. 33 of different plants show that each absorbs different chemicals. So the most effective way to 34 the air is to use different kinds of plants. Having green plants inside your house can make it a prettier and 35 place.

16. A. air   B. light

   C. health   D. atmosphere

17. A. lighter   B. worse   C. thicker   D. heavier

18. A. permit   B. desire

   C. cause   D. persuade

19. A. pollution   B. gases

   C. difficulties   D. problems

20. A. at least   B. hardly

   C. only   D. even

21. A. actual   B. loose

   C. indoor   D. downtown

22. A. fear   B. attention

   C. remark   D. store

23. A. houses   B. preparations

   C. furniture   D. efforts

24. A. using   B. resisting

   C. valuing   D. judging

25. A. materials   B. tables

   C. industries   D. drinks

26. A. If   B. Although

   C. As   D. Unless

27. A. chance   B. instruction

   C. scientist   D. way

28. A. from   B. for

   C. with   D. like

29. A. water   B. plants

   C. products   D. measures

30. A. take in   B. put off

   C. let out   D. give out

31. A. time   B. exchange

   C. order   D. particular

32. A. suggest   B. require

   C. beg   D. order

33. A. Colours   B. Studies

   C. Roots   D. Containers

34. A. share   B. reduce

   C. clean   D. increase

35. A. bigger   B. brighter

   C. better   D. healthier

Answer 1

16. A 17. B 18. C 19. D 20. D 21. C 22. B 23. A 24. A 25. A 26. C 27. D 28. B 29. B 30. A 31. B 32. A 33. B 34. C 35. D

16. A 解析：由下文的the air outside可知 答案。

17. B解析:上句話說室內(nèi)空氣比室外空氣 差，本句說的是室內(nèi)空氣比室外空氣差的 倍數(shù)。

18. C解析:句意:室內(nèi)空氣污染會(huì)使人感到 疲憊、眼睛疼痛、頭痛以及產(chǎn)生其他問題。

19. D解析:疲勞、眼睛疼痛、頭痛都是室內(nèi) 污染所帶來的問題，所以本空選擇prob-lems

20. D解析:“導(dǎo)致癌癥”與“導(dǎo)致呼吸紊亂、 血液病”在程度上有遞進(jìn)的關(guān)系，故 用even

21. C解析:第二段講的是室內(nèi)污染帶來的 一些問題，以及所導(dǎo)致的一些疾病，因此此 處指多數(shù)科學(xué)家認(rèn)為每一個(gè)現(xiàn)代居室都存 在著某種室內(nèi)污染。

22. B解析:本句話表示“現(xiàn)在人們開始更多 地關(guān)注這個(gè)問題”。

pay attention to“注意， 重視”，是固定搭配。

23. A 解析：由下一句“To do this they built buildings that limited the flow of air between inside and outside. ”可知，所填詞與建筑有 關(guān)，所以選houses。

24. A解析:上文提到，他們?cè)诮ㄔ旆课菖c辦 公室時(shí)不想浪費(fèi)能源，所以此處指他們也 開始使用人造的建筑材料，所以填using。

25. A 解析：由上句的 man-made building materials 可知 ，這里表示這些“ 材料” 釋放有 害氣體。

26. C 解析：下半句 scientists began searching for a 27 to deal with it是上半句的結(jié)果。上半句句意：因?yàn)檫@個(gè)問題越來越 嚴(yán)重。

27. D解析:解決污染問題，只能是尋找一種 方法，故用way。

28. B解析:本句句意:他們發(fā)現(xiàn)了一種適用 于建筑的天然的污染控制系統(tǒng)——綠色植 物。

for在此表示“適用于”。

29. B 解析：由下一句 “ They believe that a plant's leaves absorb or 30 the pollu-tion. ”可知，此處選plants。

30. A解析：由空前的or可知，該空應(yīng)與absorb 是 同義詞，故用 take in 

31. B解析：句意：在交換中，植物通過葉子 和根部的小組織來釋放出氧氣。所以應(yīng)為 exchange “交換”�！敖粨Q”指的是植物吸收 污染物，然后釋放氧氣。

32. A解析：由語(yǔ)境可知此處選suggest。

33. B解析:句意:不同植物的研究表明每種 吸收不同的化學(xué)物質(zhì)。選B.

34. C解析:綠色植物對(duì)控制室內(nèi)污染有很 好的作用，故推斷此空填clean。clean the air意為“凈化空氣”。

35. D解析：由于綠色植物能夠凈化室內(nèi)空 氣，所以在房間里放置綠色植物能夠使房 子漂亮并有益于健康。