Ⅲ. Cloze(30 points)
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 over a 26 period of time without 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.
21.A. landscapes B. cities C. maps D. pictures
22.A. At B. Before C. After D. Since
23.A. for example B. in addition C. at last D. after all
24.A. both B. in C. between D. before
25.A simple B. beneficial C. interesting D. obvious
26.A long B. short C. happy D. sad
27.A. Construction B. Pollution C. Farming D. Living
28.A. amount B. purity C. nature D. qual
29.A people B. species C. plants D. insects
30.A. effective B. small C. fatal D. surprising
31.A. How B. Whether C. Before D. As
32.A. crowded B. extensive C. large D. bare
33.A. reform B. destruction C. support D. discovery
34.A. improvements B. changes C. protection D. development
35.A. even B. far C. more D. less
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