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问题 判断题

压缩机在临界转速区长时间转动时，转子会发生强烈震动。（）

答案

参考答案：对

选择题

I requested that you      the task on time.

A．finished

B．finish

C．could finish

D．would finish
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填空题
选用方框中的单词并用其适当的形式填空。
bus, have, I, her, different
1. Mom, help _____ find my friend Jim, please.
2.This bike isn't mine. It's _____ .
3. Mike and I are in the same grade, but we are in _____ classes.
4. He _____ a round face and short hair.
5. What color are those _____ ?
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