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  3. The author is primarily concerned with ______. The passage suggests which of the following about air pollution?

The author is primarily concerned with ______. The passage suggests which of the following about air pollution?

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问题 The author is primarily concerned with ______.
The passage suggests which of the following about air pollution?
选项 A、Further attempts to reduce emission from gasoline-fueled vehicles will not help lower urban air-pollution level.
B、Attempts to reduce the pollutants that an individual gasoline-fueled vehicle emits have been largely unsuccessful.
C、Few serious attempts have been made to reduce the amount of pollutants emitted by gasoline-fueled vehicles.
D、Pollutants emitted by gasoline-fueled vehicles are not the most critical source of urban air pollution.
答案A
解析 这是一道暗示题。根据第一段可知，进一步减少汽车的尾气排放已不能解决城市污染问题。
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考研英语一

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