Demand-Supply-Equilibrium-选择题-AS经济学


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AS经济学选择题解析

Demand

201603-12-Q6

What causes the demand curve for an inferior good to shift to the right?

答案:

分析Analysis

  • There is an inverse relation between the demand for Inferior goods and its income.

    Inferior goods的需求和收入呈相反的关系

  • demand … shift to right means an increase in demand (for an inferior good), thus income must decrease, i.e. A

    demand … shift to right代表(inferior good)需求增加,所以income(收入)必须下降,正确答案A

  • B: a decrease in income tax increases after tax income, thus the demand for inferior goods decreases.

    B: 收入税下降增加税收收入,所以对inferior goods的需求下降

  • C: a decrease in the price of a substitute good DECREASEs the demand for the goods as it becomes relatively more expensive.

    C: 替代品的价格下降使此产品变得相对更贵,所以对它的需求下降

  • D: a decrease in the price of the good results in moving along the demand curve rather than a shift, i.e. change in quantity demanded rather than a change in demand.

    D: 此产品的价格下降会造成沿着demand curve移动,而不是平移(shift)

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