This passage mainly tells us ______. Which of the following is NOT the reason for the greenhouse effect?

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问题 This passage mainly tells us ______.
Which of the following is NOT the reason for the greenhouse effect?

选项 A、Uncontrolled development.
B、A warming atmosphere at a global level.
C、Sunlight reaches the forest floor, dries plants and lights fires.
D、No limits on logging and bad fire preventing efforts.

答案B

解析 本题为细节辨认题。温室效应的结果是导致全球变暖,而全球温暖的空气不是导致温室效应的原因。
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