单项选择题
Obsessed with their research on superconductive material, they were
oblivious of
the goings-on around them.
A.afraid of
B.amazed at
C.familiar with
D.unaware of
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单项选择题
Recurrent showers were forecast for the day.
A.Recuperative
B.Intermittent
C.Instantaneous
D.Frequent
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单项选择题
A careful screeningof the disease will lessen the patients anxiety.
A.showing
B.hiding
C.investigation
D.projection
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