单项选择题

A．About three days.
B．Fifty dollars.
C．At 10:30.
D．Some time ago.
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单项选择题
A．Sorry, I’ve got it.B．No, I’m full, thank you.C．Yes, it’s over there.D．Excuse me, you’re wrong.
A．Sorry, I’ve got it.
B．No, I’m full, thank you.
C．Yes, it’s over there.
D．Excuse me, you’re wrong.
单项选择题
Smoking cigarettes adds to the general levels of air pollution as damaging our health.
A．吸烟不仅对健康有害，而且增加了空气污染程度。
B．吸烟增加了空气污染的总体状况，这就有害健康。
C．吸烟增加空气污染的程度与危害健康的程度一样大。
D．吸烟及空气污染同样都会危害我们的身体健康。
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