单项选择题

Careful surveys have indicated that as many as 50 percent of patients do not take drugs ______ directed.

A. like
B. so
C. which
D. as
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单项选择题
The movement of the moon conveniently provided the unit of month, which was ______ from one new moon to the next.
A. assessed
B. measured
C. reckoned
D. judged
单项选择题
The screaming of a woman ______ our attention back ______ the TV program.
A. paid; at
B. got; on
C. called; to
D. drew; over
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