单项选择题

Science is still ______ of the causes of many kinds of cancer.

A．ignorant
B．unconscious
C．conscious
D．informed
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单项选择题
At the foot of the mountain ______.
A．stood a village
B．a village was
C．did a village stand
D．stand a village
单项选择题
She got a ______ job while she was waiting to go to the university.
A．steady
B．attractive
C．temporary
D．permanent
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