2. 外语
  3. Hydropower is the leading source of renewable energy______more than 97 percent of all electricity generated by renewable sources

Hydropower is the leading source of renewable energy______more than 97 percent of all electricity generated by renewable sources

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问题 Hydropower is the leading source of renewable energy______more than 97 percent of all electricity generated by renewable sources.
选项 A、: it provides
B、. And it provides
C、, it provides
D、; it provides:
答案A
解析 A colon introduces an explanation of the idea that hydropower is the leading source of renewable energy.
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