单项选择题

Cough syrups and cold remedies that are manufactured with alcohol will last much longer than those prepared with water.

A．float
B．finish
C．remain effective
D．be prescribed
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______ this coming Thursday, it will be too late to enroll of the course.
A．As of
B．As for
C．As to
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An intelligent TV viewer may occasionally become enraged by the ______ argumentation in commercials.
A．imperative
B．fallacious
C．persuasive
D．fabulous
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