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【单选题】
甲乙商品的价格分别为3元、2元,若消费者获得最大效用时已知甲商品的边际效用是30单位,那么此时乙商品的边际效用是( )单位。A.
10
B.
30
C.
20
D.
45
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举一反三
【单选题】How often does the group rehearse?
A.
One night a week.
B.
Every Wednesday for three hours.
C.
Every other Thursday.
D.
Three times a week.
【单选题】In a fixed system，the government must______if there is a sudden demand for one currency to keep the system stable．
A.
sell enough of that currency into the market
B.
buy up that currency in the market
C.
discourage investment
D.
hold large reserves of that currency
【单选题】旅游者在办理离境手续时，一般是( )。
A.
先办理登机手续，再过边检、海关
B.
先过边检，再办理登机手续、过海关
C.
先过海关，过边检，再办理登机手续
D.
先办理登机手续，再过海关、边检
【单选题】How often does the bus circle the city?
A.
an hour
B.
two hours
C.
three hours
D.
once a week
【单选题】— How are you today? — Oh, I ____ as ill as I do now for a long time. [ ]
A.
isn't feeling
B.
wasn't feeling
C.
don't feel
D.
haven't felt
【单选题】In the case of an appreciating domestic currency, central banks often sell foreign currencies in exchange for domestic currency to stop the appreciation.
A.
TRUE
B.
FALSE
【单选题】How often does the magazine publish?
A.
A week.
B.
Two weeks.
C.
A month.
D.
A quarter.
【判断题】A fall in the expected future exchange rate shifts the expected return schedule for domestic deposits to the right and causes the domestic currency to depreciate.
A.
正确
B.
错误
【单选题】—Do you have a small mouth? —No, I don’t. I have a ____ one.
A.
long
B.
big
C.
wide
D.
short
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