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【单选题】
In last night’s singing competition,the girl in red sang____of all.A.
good
B.
best
C.
better
D.
well
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A.
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B.
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C.
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D.
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A.
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D.
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A.
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B.
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C.
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D.
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【单选题】Assume that a firm's total revenue is less than its total cost for the level of output it is producing. In the short run, this firm should:
A.
expand output.
B.
contract output.
C.
shut down.
D.
There is not enough information to answer the question.
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