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The main idea of the first paragraph is ______. [br] Plants with roots appeared
The main idea of the first paragraph is ______. [br] Plants with roots appeared
游客
2025-07-31
12
管理
问题
The main idea of the first paragraph is ______. [br] Plants with roots appeared about ______.million years ago.
选项
A、430
B、300
C、330
D、100
答案
C
解析
最先出现的植物在4亿3千万年前,1亿年后,植物开始生根,也就是3亿3千万年前。
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