单项选择题

已知某冰箱的需求价格弹性系数是-0.8,当价格为每台3000元时,其销售量为1000台。如果这种商品价格下降300元,在其他因素不变的条件下,其销售量是()台。

A.920
B.992
C.1080
D.1008
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听力原文:M: We should now move on to another item on the agendA.W: OK, but I still say we should take the matter up again in our next meeting.Q: What does the woman think of the man's suggestion?(19)A.She agrees to move the item to the balcony.B.She disagrees and wants the issue discussed now.C.She disagrees and wants the issue resolved immediately.D.She agrees but wants the issue to be further discussed later. Questions 19 to 22 are based on the conversation you have just hearD.
A.W:
B.
Q:
C.She
D.
B.She
E.
C.She
F.
D.She
G.
单项选择题
认为长期利率是人们所预期的短期利率的平均值,该观点源自于利率期限结构理论的( )。
A.预期理论
B.市场分割理论
C.流动性溢价理论
D.期限优先理论
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