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【单选题】
As a boy of six, .A.
Tim’s parents asked him to play the piano every day.
B.
Tim and his parents would play the piano together.
C.
Tim had to practice playing the piano every day.
D.
to learn playing the piano is too hard for Tim.
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举一反三
【单选题】Mom won’t let Dick go out ________ he promises to be back by 10:00 tonight.
A.
since
B.
when
C.
if
D.
unless
【单选题】---Don’t too late, or you will feel tired in class tomorrow. ---I won’t, Mom. Good night!
A.
wake up
B.
get up
C.
stand up
D.
stay up
【单选题】--Mom, guess what? I’ve won the 1st prize! ---This a celebration! Let’s go to prepare a party．
A.
helps out
B.
works out
C.
calls for
D.
pays for
【简答题】晕厥是暂时性知觉丧失现象，其主要发生原理是（）
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