单项选择题

电能是一次能源。

A．对
B．错

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单项选择题

In each pair below, one sentence is correct and one contains an error. Write M for misplaced modifier or C for correct in front of each sentence. 6. Though he thought the job was long-term, Sam only worked in Phoenix one day.

单项选择题

A、正确
B、错误