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【单选题】
下列哪种说法是正确的A.
如果某种商品（比如啤酒）的消费量一直增加，边际效用可能为负数
B.
当边际效用为 0 时，平均效用最大
C.
当平均效用最大时，总效用最大
D.
人们消费是为了最大化平均效用
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举一反三
【单选题】What do we learn from the words of Bill Clinton?
A.
Ann Richards created a world for all the young people.
B.
Ann Richards was the greatest feminist in the US.
C.
Ann Richards helped young girls find their places.
D.
Ann Richards was a kind-hearted person.
【单选题】What can be inferred from the example about Ann given in the text?
A.
Ann did not set up clear goals for her team.
B.
Ann was very interested in learning about Asian culture.
C.
Asian managers avoid criticizing a person in the face of others.
D.
American managers like regular group meetings and private talks.
【单选题】Ann's home is about ten kilometers_________school. [ ]
A.
away
B.
to
C.
away from
D.
far from
【简答题】阅读理解 Mike wants to borrow an eraser from his friend Ann.But Ann's eraser is at home.Mike wants to buy one in the shop.The shop near the school sells books,pens and many things like that.The shop is bi...
【简答题】Ann comes from England. Ann ____ from England.
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