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【多选题】
即使二手车的质量在买卖双方之间存在信息是不对称，但以下对二手车市场模型的修改可以使一部分二手车仍然能够成交A.
同样一辆二手车，买方对质量的评价要低于卖方
B.
同样一辆二手车，买方对质量的评价要高于卖方
C.
同样一辆二手车，不同卖方对质量的评价各有高低
D.
以上 BC 中的情形同时发生
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举一反三
【单选题】Despite their good service, most inns are less costly than hotels of _____ standards.
A.
equivalent
B.
uniform
C.
alike
D.
likely
【简答题】已知数列{a n }是首项为1的等差数列，且公差不为零，而等比数列{b n }的前三项分别是a 1 ，a 2 ，a 6 ． （I）求数列{a n }的通项公式a n ； （II）若b 1 +b 2 +…b k =85，求k的值．
【单选题】（文）等差数列{a n }公差不为零，首项a 1 =1，a 1 ，a 2 ，a 5 是等比数列，则数列{a n }的前10项和是（ ）
A.
90
B.
100
C.
145
D.
190
【简答题】第13次作业报价单的制作
【单选题】Most of the big hotels in Shanghai were full last week, but finally we _____ find a room in a small one. [ ]
A.
ought to
B.
could
C.
were able to
D.
might
【单选题】Winter is the______season at most hotels in this seaside town, because very few tourists come to stay.
A.
slow
B.
slack
C.
low
D.
quiet
【单选题】Most of the big hotels in Shanghai were full last week, But finally we ______find a room in a small one.
A.
ought to
B.
could
C.
were able to
D.
might
【单选题】Which of the following types of hotels would likely appeal most to pleasure/leisure travelers?
A.
airport hotels
B.
resort hotels
C.
residential hotels
D.
convention hotels
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