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  3. Nature’s ways of maintaining the balance are simple and easily understood. The example of tadpoles, fish eggs and waterfowl is

Nature’s ways of maintaining the balance are simple and easily understood. The example of tadpoles, fish eggs and waterfowl is

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问题 Nature’s ways of maintaining the balance are simple and easily understood.
The example of tadpoles, fish eggs and waterfowl is used to show that the activities of man could give rise to negative chain reactions.
选项 A、Y
B、N
C、NG
答案A
解析 第二段第三句说“When man interferes…and his action can have a chain reaction”，而紧接着提到fish eggs，waterfowl和tadpoles的例子来说明前面一句话。
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大学英语四级

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