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【简答题】
填土压实方法有 、 、 。
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举一反三
【单选题】When the airplane takes off， the passengers are told to _______ their seat belts.
A.
fountain
B.
fix
C.
tight
D.
fasten
【简答题】What did the boy think about the girl?
【单选题】What do you think of when you think about drugs? Heroin? Cocaine? Usually we think about these illegal, hard drugs, but what about those being used around us every day? They affect our lives more than...
A.
heroin, cocaine
B.
alcohol, cigarettes
C.
chewing tobacco
D.
all of the above
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