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U1:The alter of our natural resources and contamination of our food supply continue to occur 21. We can infer from the first two paragraphs that the industrialists disregard environmental protection chiefly because ____. A. they are reluctant to sacrifice their own economic interests B. time has not yet come for them to put due emphasis on it C. they are unaware of the consequences of what they are doing D. it is difficult for them to take effective measures 请根据需要填入 Script: 正确答案：A 22. The main task now facing ecologists, environmental activists and conservationists is ____. A. to improve the quality of life by enforcing environmental standards B. to take radical measures to control environmental pollution C. to prevent pollution by legislation, economic incentives and persuasion D. to arouse public awareness of the importance of environmental protection 请根据需要填入 Script: 正确答 案：D 23. The word "tunnel-visioned" (Sentence 2, Para. 4) most probably means "____". A. short-sighted B. able to see only one aspect C. blind to the facts D. narrow-minded 请根据需要填入 Script: 正确答案：B 24. Which of the following, according to the author, should play the leading role in the solution of environmental problems? A. The industry's understanding and support. B. The cooperation of ecologists, environmental activists and conservationists. C. The efforts of environmental health professionals. D. Legislation and government intervention. 正确答案：C 得分：0 分 25. Which of the following is true according to the last paragraph? A. Efforts should be exerted on pollution prevention instead of on remedial measures. B. Environmental degradation will be stopped by the end of this decade. C. More money should be spent in order to stop pollution. D. Ordinary citizens have no access to technical information on pollution. 请根据需要填入 Script:正确答案：A