本题目来源于试卷: IB Economics Unit 2.1: Microeconomics - Demand & Supply, Equilibrium，类别为 IB经济学
[单选题]
The following statements0xh jj; eivw2w- ) tj/u4sd,1qm2pds n are correct(6f0hmwe*p4l cfcc-;xeqx t4 except:
A. The market demand curve is constructed by horizontally summing up individual demand curves.
B. Only changes in the non-price determinants of demand can cause shifts of the demand curve.
C. Changing price expectations can shift the demand curve.
D. Effective demand is the desire to purchase something at any given price.
参考答案: D
本题详细解析:
D is not a correct statement as it is not enough for a consumer tg6c1 alxvi b,n6xm/9xo desire a particular good, they must also be able to purchase it in order for them to‘demand’ it.
The following stx/a gc6 l6v1,9mnixxbatements are correct: The market demand curve is created by horizontally adding the points of all individual demand curves (Choice A).
Price is the y-axis, so anything that impacts quantity demanded besides price will cause a shift of the demand curve (Choice B).
Future price expectations are a non-price determinant of demand (Choice C).
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