单项选择题

William has cut his smoking ______ to five cigarettes a day.

A．down
B．in
C．off
D．our
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单项选择题
Professor Smith is always very ______ to the reaction of the audience when he gives lectures.
A．sentimental
B．sensitive
C．sensible
D．positive
单项选择题
Nobody but a young woman ______ the airplane crash.
A．endured
B．rejected
C．survived
D．lived
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