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Tài liệu luyện thi ngữ pháp tiếng anh của Trung Quốc section 7 | GRE fi S 97.11 SECTION 1 Time 30 minutes 25 Questions 1. The Environmental Protection Agency must respond to the hazard to children s health posed by exposure to asbestos fibers released in the air in school classrooms. Since it is impossible to close school buildings the best plan would be to initiate programs that mandate the immediate removal of asbestos from all the school buildings that are found to contain asbestos regardless of whether or not the buildings are in use. Which of the following if true is the strongest reason for the Environmental Protection Agency not to follow the plan outlined above A The techniques available for removing asbestos often increase the level of airborne asbestos. B Schools are places where asbestos is especially likely to be released into the air by the action of the occupants. C Children exposed to airborne asbestos run a greater risk of developing cancer than do adults exposed to airborne asbestos. D The cost of removing asbestos varies from school to school depending on accessibility and the quantity of asbestos to be removed. E It is impossible to determine with any degree of certainty if and when construction materials that contain asbestos will break down and release asbestos fibers into the air. 2. Aedes albopictus a variety of mosquito that has recently established itself in the southeastern United States is less widespread than the indigenous swamp mosquito. Both the swamp mosquito and A. albopictus can carry viruses that are sometimes fatal to humans but A. albopictus is a greater danger to public health. Each of the following if true provides additional information that strengthens the judgment given about the danger to public health EXCEPT A Unlike the swamp mosquito A. albopictus originated in Asia and larvae of it were not observed in the United States before the mid-1980 s. B Unlike the swamp mosquito A. albopictus tends to spend most of its adult life near human habitation. C Unlike swamp mosquito larvae A. .
