单项选择题

Since most doctors are ______ about effectiveness of the new medicine, they seldom recommend it to their patients.

A．anxious
B．dubious
C．cynical
D．innocent
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单项选择题
His elder sister，who works in the supermarket，is still on the shelf．
A．童心未泯
B．取货
C．没出嫁
D．休息
单项选择题
It was all agreed that the first problem the new government would have to ______ was unemployment.
A．grip
B．tackle
C．discern
D．manipulate
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