单选题 Metro North Railway is trying to decide whether or not to run an additional train into New York City from New Haven, Connecticut at 8:15 a.m. The total cost of running trains between 8:00 a.m. and 9:00 a.m. is $$45,000 and the expected revenues on any given day are $$100,000 during this time period. The cost of running the additional train is $$4,000 and it is expected that revenues will rise to $$103,500. Metro North should ( )
A、run the train because the total revenues are greater than the total costs.
B、run the train because the firm’s revenues will rise.
C、not run the train because the total costs are already too high.
D、not run the train because the marginal cost of $$4000 is greater than the marginal revenue of $$3,500.
单选题 In a market economy, the economic well-being of society is the responsibility of ( )
A、central planners.
B、central bankers.
C、government policymakers.
D、no one; self-interested individuals bring about the well-being of society.
单选题 Choices must be made in the use of resources ( )
A、because they are in finite supply.
B、because they are in finite demand.
C、only if the resources are nonrenewable.
D、because they are in infinite supply.
单选题 Social security programs are aimed at making the distribution of resources in an economy more ( )
A、efficient.
B、inefficient.
C、equitable.
D、inequitable.
单选题 A nation’s standard of living can be increased by ( )
A、improvements in technology and international trade.
B、improvements in technology but not international trade.
C、international trade but not improvements in technology.
D、neither international trade nor improvements in technology.
单选题 The opportunity cost of building an additional parking lot at your school is ( )
A、the cost of concrete, labor, etc. used to build the lot.
B、the value of the property and resources used at their next best alternative use.
C、the value of the property and resources used at all of their alternative uses.
D、infinite, and so we cannot estimate it.
单选题 Suppose you are considering going to the movies, and you place a $$12 value on your anticipated enjoyment of the movie. “The ticket price is $$6 and you would be giving up two hours of work, where you earn $5 per hour. You would go to ( )
A、work; the opportunity cost of the movies exceeds the expected benefit.
B、the movies; your incentive is the $6 excess expected benefit.
C、the movies; your enjoyment will exceed the lost wages by $2.
D、the movies; the benefit of $18 exceeds the lost wages.
单选题 An important element of the market process is that ( )
A、although people trade voluntarily, one party "wins" and the other party "loses".
B、the government determines the extent of market activity in order for all parties to benefit.
C、people are better off if they are self-sufficient than if they trade with others in the market.
D、people trade voluntarily and all parties expect to benefit.
2026-03-10
共242道
