It is known that solar power can ______ electric energy.

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问题 It is known that solar power can ______ electric energy.

选项 A、convert into
B、convert to
C、be converted into
D、be converted to

答案C

解析 convert into是短语“把……转换成”，因此B和D是错误的，此句主语和谓语的关系是被动的，所以谓语动词要用被动语态，C正确。

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