单项选择题

By tuning this knob to the right you can______ the sound from this radio.

A．amplify
B．enhance
C．magnify
D．retard

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单项选择题

I was unaware of the critical points involved in this issue, so my choice was quite

A．arbitrary
B．rational
C．melancholy
D．unreasonable

单项选择题

I always hold an opinion that people who refuse to______ with the law will be punished.

A．offset
B．collaborate
C．conform
D．comply

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