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Directions;For each blank in the following passage,there are four choices marked A,B,C and D. Choose the one that is most suitable and mark your answer by blackening the
corresponding letter on the Answer Sheet.
The destruction of habitats(栖息地)all over the world is the primary reason species are becoming extinct(灭绝)or endangered. Houses,highways,dams,industrial buildings,and ever-spreading farms now dominate 21 formerly occupied by forests,deserts,and wetlands. 22 the beginning of European settlement in America, 23 ,over 65,000,000 acres of wetlands have been drained.
One million acres alone vanished 24 1985 and 1995.
Habitat destruction can be 25 or it can be subtle,occurring overa 26 period of time with-
out being noticed. 27 such as sewage from cities and chemical runoff fromfarms,can change the
28 and quantity of water in streams and rivers.To 29 living in a delicately balanced habitat,
this disturbance can be as 30 as the clear-cutting of a rainforest.
31 remaining habitats are carved into smaller and smaller pockets or islands,remaining species are forced to exist in these 32 areas,which causes further habitat 33 These species become less adaptable to environmental 34 ;in fact,they become 35 endangered. Scientists believe that when a habitat is cut by 90%,one-half of its plants,animals and insects will become extinct.
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A、reform
B、destruction
C、support
D、discovery
答案是:B
解析：【答案】B
考情点拨】词义辨析题。
【应试指导j 此处意为;物种被迫生活在拥挤的地方，这会进一步导致栖息地的破坏。destruction 意为“破坏” 符合句意。 reform 意为“改革”,support意为“支持”,discovery 意为“发现”。
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成人高考 > 英语 >
2018年成人高考专升本《英语》真题试卷与答案
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