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【单选题】
在下述的原因中哪个是彩色电视机的需求曲线向左平移的原因:( )A.
黑白电视机的价格上升
B.
消费者对彩色电视机的预期价格上升
C.
消费者对彩色电视机的预期价格下降
D.
消费者的收入水平提高
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反馈参考答案：
举一反三
【简答题】The person behind you constantly kicks the back of your seat．Your talkative seatmate doesn’t understand your need for sleep．And the aircraft’s bathroom is a total mess．These situations can make even a...
【简答题】报警阀的作用是什么?目前在自动喷水灭火系统中常用的报警阀主要有哪几种类型?
【单选题】Little _______ what you said. I wish you repeated it.
A.
I understand
B.
did I understand
C.
I did understand
D.
have I understood
【单选题】Would you mind _____ it again? Try to make yourself ______. [ ]
A.
say, understood
B.
to say, understand
C.
saying, understand
D.
saying, understood
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