单项选择题

Gunpowder was used extensively in firearms prior to 1990.()

A. in
B. around
C. from
D. before

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单项选择题
This play is so boring that I feel a bit sleepy.()

A. interesting
B. exciting
C. lazy
D. dull
单项选择题
He lacked the strength to deal with all these problems().

A. think of
B. talk about
C. copy down
D. cope with
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