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【简答题】
（8分）(1)分子式为C 6 H 12 的某烯烃的所有碳原子都在一个平面上，则该烯烃的结构__________________。 (2)某人坐在空调车内跟在一辆卡车后，此人根据何种现象可知前面这辆卡车是以汽油还是以柴油为燃料的？简述原因：_____________________________________________________。
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【单选题】Paul was concerned not only about his own safety but about the safety of his Sudanese driver and interpreter.
A.
Y
B.
N
C.
NG
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【单选题】Paul spared nothing to entertain or treat his guests.
A.
Paul provided little entertainment for hi k s guests.
B.
Paul's guests were not well entertained.
C.
Nothing was prepared by Paul to entertain his guests.
D.
Everything Paul could get was offered for the pleasure of his guests.
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A.
—Paul knows he needs to stop being late.
B.
—Paul can’t help being late.
【简答题】There was once a young man called Paul in a village in the USA. Paul was very lazy because his father was a rich farmer and he didn’t have to work. Mr Smith, a neighbour of his, was a blacksmith (铁匠)....
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