题目内容

3、What about younger people? 这句的回答是：Hello/ How are you?/ How are things?

A. 对
B. 错

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4、What about people I already know? 这句的回答是：Hello/ How are you?/ How are things?

A. 对
B. 错

5、What do I answer if somebody greets me with “How are you?” 这句的回答是：Fine, thanks. And you?

A. 对
B. 错

MATLAB软件中，limit(f,x,a)是一个求（）的基本命令？

A. 导数
B. 微分
C. 积分
D. 极限

MATLAB求导数命令是哪个？

A. diff
B. limit
C. solve
D. int