单项选择题

There is a controversy even among doctors as to whether this disease is contagious or not.

A．incisive
B．infertile
C．allergic
D．communicable
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单项选择题
She actually preferred a more gregarious urban life style and the cultural attractions in a warmer clime.
A．tranquil
B．sociable
C．inactive
D．undisturbed
单项选择题
They believe that the merchants had conspired to undermine the nation's economic independence.
A．uphold
B．minimize
C．weaken
D．postpone
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