Good morning. It’s nice to meet you.
A. Nice to meet you, too.
B. Goodbye, Jane. Have a nice evening.
C. Hello, my name is Mary.
查看答案
How are you, my students?
A. Fine, thanks. And you?
B. Hello, my name is Mary.
C. Nice to meet you, too.
How are you today, Jane?
A. Goodbye, Jane. Have a nice evening.
B. Fine, thanks. And you?
C. I’m doing OK.
Goodbye, Mary. See you tomorrow.
A. Hello, my name is Mary.
B. Goodbye, Jane. Have a nice evening.
C. I’m doing OK.
四阶行列式的计算可以使用对角线法则。
A. 对
B. 错
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