From the first paragraph, we get the impression that George Marsh What is the difference between today’s ecological change and

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问题 From the first paragraph, we get the impression that George Marsh
What is the difference between today’s ecological change and the five changes in ancient times?

选项 A、Species like the dinosaurs brought the ice ages to an end.
B、A volcanic eruption might lead to a great catastrophe.
C、Today’s change is mainly caused by agricultural advances.
D、Today’s change attributes to a multitude of reasons.

答案D

解析 本题是细节题。由题干中的five定位至第四段。第二句指出:其他五次灾难的发生与某一事件有关,例如冰川时代、火山爆发或流星的出现。而第三句提到这次生态系统面临的问题非常之多:过度捕鱼、雨林被摧毁、农业的发展等。[D]符合文意,故为答案。[B]虽然符合逻辑,但并非文章提到的区别,排除。
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