（题文）You must be quiet in the library. If you make a lot of　　　, you may disturb o

题干

（题文）You must be quiet in the library. If you make a lot of　　　, you may disturb others.

A．voices	B．noise
C．sounds	D．music

上一题下一题 0.85难度单选题更新时间:2014-08-26 05:53:06

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