题目内容

Over the course of the school year, Rose became popular and easily made friends wherever shewent.

A. 对
B. 错

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There are only two secrets to staying young, being happy and achieving success.

A. 对
B. 错

Don't keep silent during the meeting. I want to hear your opinion

A. 对
B. 错

What is vour dream?

A. 对
B. 错

设三阶方阵A的特征值为1,2,3,则detA=______。

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