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起止时间:2020-10-22到2021-01-31
更新状态:已完结
Unit 1 Introduction Unit 1 Test
1、 Which of the following statements is a normative statement?
A:The government ought to take some measures to reduce the unemployment rate
B:The unemployment rate is up 1 percentage point from a year ago
C:The unemployment rate is currently at 6.5 percent.
D:Based on empirical data, the higher the rate of inflation, the lower the unemployment rate.
答案: The government ought to take some measures to reduce the unemployment rate
2、 Which of the following statements is not a positive statement?
A:Increasing pollution taxes can reduce pollution emissions.
B:Based on empirical data, environmental pollution first rises and then falls with per capita income, presenting an inverted U-shaped curve.
C:Taxing air pollution will increase the cost of making steel.
D:Air pollution is harmful, therefore, the government should increase the tax in order to reduce pollution.
答案: Air pollution is harmful, therefore, the government should increase the tax in order to reduce pollution.
3、 Economics is the study of how scarce resources are allocated efficiently among different uses.
A:正确
B:错误
答案: 正确
4、 Microeconomics studies the economy from the perspective of individual agents, such as consumers, firms, governments, etc.
A:正确
B:错误
答案: 正确
5、 Microeconomics studies the overall economy, such as gross domestic product, economic growth, interest rates, unemployment, inflation, etc.
A:正确
B:错误
答案: 错误
6、 Exogenous variable is generated within a model and whose value is changed by the other variables in that model.
A:正确
B:错误
答案: 错误
7、 If an allocation is Pareto efficient, to make any one get better off we must make another one worse off.
A:正确
B:错误
答案: 正确
8、 Given an initial allocation, if you find a change in allocation could help at least one person and harms no one, the change is called Pareto improvement.
A:正确
B:错误
答案: 正确
9、 An allocation is Pareto efficient if it allows Pareto improvement.
A:正确
B:错误
答案: 错误
Unit 2 Preference and Utility Unit 2 Test
1、 If utility is given by 
, then the person’s MRSxy at the point x = 5, y = 2 is given by . (hint: calculate MRSxy =MUx/MUy first, then substitute the value of x and y)
A:1
B:1.5
C:5
D:0.4
答案: 0.4
2、 If utility is given by U(x,y)=x+y, then the person’s MRSxy at the point x = 5, y = 2 is given by .
A:1
B:1.5
C:5
D:0.4
答案: 1
3、 If utility is given by U(x,y)=min{x,y}, then the person’s MRSxy at the point x = 5, y = 2 is given by .
A:1
B:1.5
C:5
D:0
答案: 0
4、 If utility is given by U(x,y)=2xy, then the person’s MRSxy at the point x = 5, y = 1 is given by . (hint: calculate MRSxy =MUx/MUy first, then substitute the value of x and y)
A:1
B:1.5
C:5
D:0.2
答案: 0.2
5、 Which of the following utility functions would not be consistent with the notion that x and y are both “goods” with positive marginal utilities (ie. more is better)?
A:
B:U(x,y)=x+y
C:
D:U(x,y)=x/y
答案: U(x,y)=x/y
6、 Which of the following utility functions would be consistent with the notion that preference is strictly convex (Hint: MRSxy is diminishing as x increases)?
A:
B:U(x,y)=x+y
C:U(x,y)=2x+y
D:U(x,y)=min{x,y}
答案:
7、 Which of the following is not an axiom of consumer preference?
A:Reflexivity
B:Completeness
C:Convexity
D:Transitivity
答案: Convexity
8、 In microeconomics, if α is at least as preferred as β and β is at least as preferred as γ, then α must be at least as preferred as γ.
A:正确
B:错误
答案: 正确
9、 All consumption bundles on the same indifference curve are equally preferred for the consumer.
A:正确
B:错误
答案: 正确
10、 For a well-behaved preference, a consumption bundle on a higher indifference curve must bring lower utility level.
A:正确
B:错误
答案: 正确
11、 For a well-behaved preference, the indifference curves must be positive sloped.
A:正确
B:错误
答案: 错误
12、 For a well-behaved preference, the indifference curves must be straight lines.
A:正确
B:错误
答案: 错误
13、 For perfect substitutes, the indifference curves must be straight lines.
A:正确
B:错误
答案: 正确
14、 For perfect complements, the indifference curves must be straight lines.
A:正确
B:错误
答案: 错误
15、 Given U(A)=2, U(B)=1, according to ordinal utility, this consumer gets twice as much utility from A as from B.
A:正确
B:错误
答案: 错误
16、 The properties for well-behaved preference are monotonicity and concavity
A:正确
B:错误
答案: 错误
17、 The properties for well-behaved preference are monotonicity and convexity.
A:正确
B:错误
答案: 正确
18、 If Ada always would like to add 1 spoon of sugar(s) to 1 cup of coffee(c), Her utility function could be written as U=min{s, c}.
A:正确
B:错误
答案: 正确
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