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【单选题】
已知某消费者的收入是l00元，商品x的价格是10元，商品y的价格是3元。假定他打算购买7单位x和10单位y，这时x和y的边际效用分别是55和21,如要获得最大效用，他应该( )。A.
停止购买
B.
增加x的购买量，减少购买y商品
C.
减少X的购买置，增加购买y商品
D.
同时增加x和y的购买量
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举一反三
【单选题】—I missed the beginning of ________musical programme The Voice of China. —What a pity! You should leave school half _______ hour earlier.
A.
a, an
B.
the, a
C.
the, an
D.
an, the
【多选题】According to the LE course, what on earth should you be responsible for?
A.
what I know
B.
the choices I make based on my knowledge
C.
the effect - how my choices affect myself, other people, and the world around me
D.
my holistic growth
【简答题】A: Hi, Han Mei! What are you doing now? B: I’m studying for tomorrow’s test. What about you? A: I’m learning English by l 81 to the tapes. Can you tell me how you learn English? B: I learn by practici...
【单选题】There is no point arguing about what _____ the accident, I’d rather you _____ the victims of it.
A.
led to; focus on
B.
led to; focused on
C.
caused ; focus to
D.
caused to, focused to
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