题目内容

声音的分类有:

A. 口语
B. 音乐
C. 音响
D. 音效

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声音的表情性是指:传播者以不同的语音、语调、语速、停连、音量表达不同的内容,就会传递不同的感情。

A. 对
B. 错

若在一区间上,曲线总在它每一点的切线上方,则曲线在这区间是( ).

A. 递增
B. 上凹
C. 递减
D. 上凸.

In U.S.A.,the power to enforce and interpret the laws is the responsibility of ( )

A. The Judicial Branch
B. The Executive Branch
C. The Legislative Branch

In U.S.A.,the power to make new laws is the responsibility of ( )

A. The Judicial Branch
B. The Executive Branch
C. The Legislative Branch

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