2. 外语
  3. A、To find out the strength of silk for kites. B、To test the effects of the lightning rod. C、To prove that lightning is electrici

A、To find out the strength of silk for kites. B、To test the effects of the lightning rod. C、To prove that lightning is electrici

admin2022-12-08  14
问题
选项 A、To find out the strength of silk for kites.
B、To test the effects of the lightning rod.
C、To prove that lightning is electricity.
D、To protect houses against lightning.
答案C
解析
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大学英语四级

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