自然失业率是最优失业率。（）_爱下问搜题

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问题判断题

自然失业率是最优失业率。（）

答案

参考答案：错

选择题

—Dad, could you tell me _____ Chinese now?
—In a night school.

A. where is Betty studying
B. where Betty is studying
C. where did Betty study
D. where Betty studied

问答题简答题

试比较拟病毒与类病毒的异同点。