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【单选题】
假设经济中劳动市场是完全竞争的,工资弹性,这时的总供给曲线的特征是:
A.
总供给曲线垂直于纵轴
B.
总供给曲线向右上方倾斜
C.
总供给曲线向右下方倾斜
D.
总供给曲线垂直于横轴
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A.
Four years.
B.
Just three years.
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【单选题】Attention,coffee lovers! We have for you,the best coffee machine ______ invented.
A.
ever
B.
already
C.
even
D.
nowadays
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Four years.
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even if
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as if
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now that
D.
ever since
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A.
ever               
B.
already                
C.
yet
【单选题】—Have you finished your homework _____? —Not _____. I'll need another hour. [     ]
A.
already; already
B.
 ever; already
C.
 yet; already
D.
 yet; yet
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A.
where
B.
when
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which
D.
why
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A.
even if
B.
as if
C.
in case
D.
in order that
【单选题】We haven't enough books for ______ some of you will have to share.
A.
somebody
B.
anybody
C.
everybody
D.
nobody
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