单项选择题

由于老胡失业而引发其妻子临时就业的这种效虚被称为( )。

A.灰心丧气的工人效应
B.附加的工人效应
C.收入替代效应
D.劳动力市场效应

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妊娠期肝内胆汁淤积症对母儿的危害不包括 A、维生素K吸收减少 B、产后出血发生率增加 C、导致胎儿畸形 D、胎儿宫内窘迫 E、流产、早产儿发生率增加

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听力原文： What do we mean by a satisfactory standard of living? Obviously, it must include the basic necessities of life such as food, clothing and shelter. To obtain these necessities on a regular basis, a person must have a reliable in- comE.But we have other needs which we would probably also describe as basic, for example, health and education facilities and security.All of these we may define as our needs. But most of us would be far from satisfied if we had nothing more than these provided for us. We all enjoy having extra income to spend on things such as books, sports, or hobbies. Sometimes we save some of this extra income to provide for future expenditure of this type on holidays, for examplE.So in addition to our basic needs, we must add our wants. Our standard of living is the degree to which these needs and wants are satisfieD.Why are we far from satisfied with our basic needs?A.Because we should save extra money for future expenditurE.B.Because we have other wants in addition to our basic needs.C.Because we all enjoy reading books.D.Because man is never satisfied even if he has everything he wants.

A.Why
B.Because
C.
B.Because
D.
C.Because
E.
D.Because
F.

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