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【单选题】
人们在工作期间储蓄是为了在退休时消费，同时消费受财产影响的观点称为：()。A.
凯恩斯理论
B.
科斯理论
C.
生命周期理论
D.
持久收入理论
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举一反三
【单选题】why didn't steven travel to visit his mother?
A.
he was busy
B.
he was free
C.
he bought a mobile phone to call her
D.
he was unemployed
【单选题】She wanted to know ________ [ ]
A.
why didn't I think it was a good idea
B.
why I didn't think it was a good idea
C.
why I thought it wasn't a good idea
D.
why did I think it wasn't a good idea
【单选题】The mason ______ I didn't do this exercise is I didn't know how to do it.
A.
why...because
B.
why...that
C.
for...that
D.
that...because
【单选题】( ) see the film this evening?
A.
Why don't we go to
B.
Why didn't we go to
C.
Why aren't we go to
【单选题】—Why didn't Alice come to the party last night? —I don't know ______. [ ]
A.
why didn't she
B.
why she didn't
C.
why did she
D.
why she did
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