题目内容

通常听到的声音可以分为乐音和噪声两大类。( )

A. 对
B. 错

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A. [A] Their English teacher was angry with them.
B. They didn’t finish their homework.
C. The man finished his homework, but the woman didn’t.

A. 对
B. 错

A. 对
B. 错