单项选择题

A．Three types of noise that can make communication difficult.
B．The meaning of external noise.
C．The effect of cigarette smoke.
D．The reason why you can become speechless.
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单项选择题
A．School senator.B．School treasurer.C．School secretary.D．School president.
A．School senator.
B．School treasurer.
C．School secretary.
D．School president.
单项选择题
A．She doesn’t get what she wanted.B．She is given a vegetable salad.C．She finds the fruit not fresh enough.D．She has been overcharged.
A．She doesn’t get what she wanted.
B．She is given a vegetable salad.
C．She finds the fruit not fresh enough.
D．She has been overcharged.
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