题目内容

Questions 24 is based on the passage you have just heard.

A. It is to be passed on.
B. It is mostly junk.
C. It requires no reply.
D. It causes no concern.

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Questions 25 is based on the passage you have just heard.

A. Make it as short as possible.
B. Use simple and clear language.
C. Adopt an informal style of writing.
D. Avoid using capitals for emphasis.

算术运算符有+、-、*、/、（）、++和--。

（）运算的两个操作数必须是整数。

22.0/4=（）。