问题 单项选择题

下列俗语描述的现象与经济学名词对应错误的是()。

A.覆水难收--机会成本

B.一山不容二虎--完全垄断

C.入芝兰之室,久而不闻其香--边际效用递减

D.城门失火,殃及池鱼--负外部效应

答案

参考答案:A

解析:A项,“覆水难收”比喻事情已成定局,难以挽回,反映的应是沉没成本,沉没成本是指由于过去的决策已经发生了的,而不能由现在或将来的任何决策改变的成本,即已经付出且不可收回的成本。机会成本是指为了得到某种东西而所要放弃另一些东西的最大价值。A项对应错误,当选。B项,“一山不容二虎”比喻在一个地方两个强者不能相容。完全垄断是指整个行业的市场由一家企业完全控制的状态。B项对应正确。C项,“入芝兰之室,久而不闻其香”指进入了摆满香草的房间,久而久之闻不到香草的香味了。边际效用递减,效用,即满足程度是人神经的兴奋,外部给一个刺激,人的神经兴奋就有满足感(产生效用),随着同样刺激的反复进行(连续消费同一种物品的数量增加),兴奋程度就下降(边际效用递减)。C项对应正确。D项,“城门失火,殃及池鱼”比喻无辜被连累而遭受灾祸。负外部效应是指未能在价格中得以反映的,对交易双方之外的第三者所带来的成本。D项对应正确。

填空题

阅读短文,从下列所给词中选择适当的词并用其正确形式填空,使短文意思通顺、完整.每空限填一词,每词限用一次,有两个词是多余的。

so, room, be, we, meet, through, have, stop, soon, early, wonderful, but Dear Dennis ,

Dear Dennis ,

    We just want to say thank you for having us before we caught the plane last week. It was a nice

evening, and we enjoyed    1   Pete and Sarah. Wiih your help we were able to get to the airport with

plenty of time. We often tried to get an 2  flight than usual,but it wasn't possible.

    We had a   3   hoilday in Spain. We just loved driving 4 the countryside, and we often

  5   to walk round a mountain village. We met    6  friends, Bill and Sue, and they invited us to have a

meal with them. They wanted us to stay with them,   7   we couldn't, as we had already booked two  

8   in a hotel.

    The weather was nice. There   9   so much beautiful sunshine all the time we were there. Leaving Spain was very sad.  It made me want to cry.

    Anyway, we're looking forward to hearing from you, and hope to see you   10   . Let me know if you're ever in the area. You must call in.

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填空题