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The main idea of the first paragraph is ______. Plants with roots appeared about ______ million years ago.
The main idea of the first paragraph is ______. Plants with roots appeared about ______ million years ago.
admin
2008-11-13
22
问题
The main idea of the first paragraph is ______.
Plants with roots appeared about ______ million years ago.
选项
A、430
B、300
C、330
D、100
答案
D
解析
By the end of100 million years,plants had developed their roots(到了1亿年前的后牛段,植物已经形成了它们的根)从以上这句话可以看出,本题的正确答案应该是D.
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成人本科学位英语
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