The Scarcity Principle applies to: A.consumers primarily. B.firms primarily. C.poor people primarily. D.everyone. 正确答案：everyone.

Forest lives in complete isolation in Montana. He is self-sufficient and feeds himself through hunting, fishing, and farming. Which of the following statements about Forest is true? A.Forest is not required to make trade-offs because he is self-sufficient. B.Forest has unlimited … 阅读详情>> "Forest lives in complete isolation in Montana. He is self-sufficient and feeds himself through hunting, fishing, and farming. Which of the following statements about Forest is true?"

Chris has a one-hour break between classes every Wednesday. Chris can either stay at the library and study or go to the gym and work out. The decision Chris must make is: A.not an economic problem because it’s an hour that Chris has no matter what he does. B.an economic problem b … 阅读详情>> "Chris has a one-hour break between classes every Wednesday. Chris can either stay at the library and study or go to the gym and work out. The decision Chris must make is:"

Josh wants to go to the football game this weekend, but he has a paper due on Monday. It will take him the whole weekend to write the paper. Josh decides to stay home and work on the paper. According to the Scarcity Principle, the reason Josh doesn’t go to the game is that: A.Jos … 阅读详情>> "Josh wants to go to the football game this weekend, but he has a paper due on Monday. It will take him the whole weekend to write the paper. Josh decides to stay home and work on the paper. According to the Scarcity Principle, the reason Josh doesn’t go t"

Whether studying the output of the U.S. economy or how many classes a student will take, an unifying concept is that: A.wants are unlimited and resources are scarce, so trade-offs have to be made. B.both wants and resources are unlimited. C.wants are limited and resources are unl … 阅读详情>> "Whether studying the output of the U.S. economy or how many classes a student will take, an unifying concept is that:"

The Cost-Benefit Principle indicates that an action should be taken if: A.its average benefits exceed its average costs. B.its extra benefit is greater than or equal to its extra cost. C.its total benefits exceed its total costs. D.its net benefit (benefit minus cost) is zero. 正确 … 阅读详情>> "The Cost-Benefit Principle indicates that an action should be taken if:"

If a person takes an action if, and only if, the extra benefits from taking that action exceed the extra costs, then that person is: A.not rational. B.following the Cost-Benefit Principle. C.following the Scarcity Principle. D.not following the Cost-Benefit Principle. 正确答案：follow … 阅读详情>> "If a person takes an action if, and only if, the extra benefits from taking that action exceed the extra costs, then that person is:"

Choosing to study for an exam until the extra benefit (e.g., improved score) equals the extra cost (e.g., the value of foregone activities) is: A.not rational because it ignores the importance of total benefits and total costs. B.an application of the Cost-Benefit Principle. C.no … 阅读详情>> "Choosing to study for an exam until the extra benefit (e.g., improved score) equals the extra cost (e.g., the value of foregone activities) is:"

The Scarcity Principle tells us _, and the Cost-Benefit Principle tells us _. A.how to make good choices; that choices involve costs and benefits B.that good choices eliminate scarcity; how to make good choices C.how to make choices; that choices must be made D.that choices must … 阅读详情>> "The Scarcity Principle tells us _, and the Cost-Benefit Principle tells us _."

According to the Cost-Benefit Principle, you should go see the latest Star Wars movie with your friends this week-end if: A.you can afford to go to the movies. B.the extra benefits of seeing the movie are greater than the extra costs of seeing the movie. C.you really like Star Wa … 阅读详情>> "According to the Cost-Benefit Principle, you should go see the latest Star Wars movie with your friends this week-end if:"

A rational person: A.undertakes activities until the net benefits become less than zero. B.makes choices based on total benefits and total costs. C.considers the financial benefits and financial costs of making a choice. D.makes choices based on added benefits and added costs. 正确 … 阅读详情>> "A rational person:"

Suppose that the extra cost to Tim of a third glass of soda is zero because he’s at a restaurant that gives free refills. According to the Cost-Benefit Principle Tim should: A.not drink a third glass of soda. B.drink a third glass of soda if his total benefit from drinking soda i … 阅读详情>> "Suppose that the extra cost to Tim of a third glass of soda is zero because he’s at a restaurant that gives free refills. According to the Cost-Benefit Principle Tim should:"