2. 外语
  3. From the passage we know that the increased use of cars will______. Which of the following is practical but only makes a margin

From the passage we know that the increased use of cars will______. Which of the following is practical but only makes a margin

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问题 From the passage we know that the increased use of cars will______.
Which of the following is practical but only makes a marginal contribution to solving the problem of greenhouse emissions?
选项 A、The use of fuels other than gasoline.
B、Improved energy efficiency.
C、The introduction of less polluting driving systems.
D、Reducing car use by carpooling.
答案B
解析 细节题。根据文章最后一段，improved energy efficiency“改进能源效率”是很有吸引力的，但汽车燃料经济在10年间没取得什么进步。使用天然气虽能降低成本，但只对减少污染和温室气体排放有边缘效力。因此B是正确答案。
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