People have proved______to be true that the heat we get from coal and oil comes

游客2024-09-24 10

问题 People have proved______to be true that the heat we get from coal and oil comes from the sun.

选项 A、that
B、it
C、this
D、/

答案 B

解析考查it的用法。it是形式宾语，that从句是真正的宾语。

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