2. 外语
  3. From the passage we know that" the greenhouse effect" is an effect in which ______ . Which of the following sentences is true?

From the passage we know that" the greenhouse effect" is an effect in which ______ . Which of the following sentences is true?

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问题 From the passage we know that" the greenhouse effect" is an effect in which ______ .
Which of the following sentences is true?
选项 A、Carbon dioxide in the atmosphere carries heat into outer space so as to change the climate.
B、Carbon dioxide may escape into the greenhouse so that the Earth will be made warmer.
C、As carbon dioxide keeps heat from escaping into outer space, the Earth may become warmer.
D、Carbon dioxide may make the Earth warmer because it lets the heat escape into outer space.
答案C
解析 对四个选项进行分析，只有选项C的内容，即：因为二氧化碳阻碍了热量散入外部空间，地球将变暖。符合原文的内容。故选C。
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