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【单选题】
关于共轭效应的描述,下列哪种说法是错误的 ( )A.
共轭体系具有共平面性
B.
共轭体系内所含的和的长度趋于平均化
C.
共轭体系能量显著降低
D.
共轭效应的传递随着距离的增加而迅速减弱
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举一反三
【单选题】The reason _____ he failed the exam was _____ he had not worked hard.
A.
why……if
B.
why……that
C.
that……why
D.
why……what
【单选题】对于 37 Rb的价电子来说,适合它的一组量子数是( )。
A.
(5，0，0，+1/2)
B.
(5，1，0，－1/2)
C.
(5，1，1，+1/2)
D.
(6，0，0，－1/2)
【单选题】Which of the following is not a reason that Magnum bars cost more in France?
A.
French people love Magnum bars very much.
B.
The euro begins to be used.
C.
There are higher taxes, distribution and labor costs in France.
D.
The retailers make a larger profit on them.
【单选题】他自愿当我们队的司机
A.
He volunteer to serve as the driver of our team.
B.
He volunteered to serve as the driver of our team.
C.
He volunteered to serve the driver of our team.
D.
He volunteer to serve the driver of our team.
【简答题】他自愿当我们队的司机。serve as
【简答题】他自愿当我们队的司机。
【简答题】Translate the following sentences into English. 他自愿当我们队的司机。
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