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【单选题】
Tired of the cold weather, Mr. and Mrs. Smith are consideringto the south.()A.
to move
B.
moving
C.
move
D.
to be moving
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反馈参考答案：
举一反三
【单选题】对发动机活塞行程说法正确的是( )。
A.
活塞行程等于曲柄半径的1/2
B.
活塞行程等于曲柄半径的2倍
C.
活塞行程等于曲柄半径的1/4
D.
活塞行程等于曲柄半径
【单选题】Bythesummer,Elizabethherefortenyears.
A.
will work
B.
works
C.
will have worked
D.
has worked
E.
would have worked
F.
will work
【简答题】什么是内燃机活塞行程?
【单选题】听力原文： Good morning, my name is Sam Smiley. I'd like to leave a message for Ms. Elizabeth Donald. This weekend is the third training session of the month, but some business has come up at one of our lo...
A.
To have the class materials sent to him.
B.
To make room for him in the class.
C.
To accompany him on the trip.
D.
To finish the session a bit early.
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