The extra benefit that results from carrying out one additional unit of an activity is the__ of the activity（）
A. average benefit
B. marginal benefit
C. economic benefit
D. total benefit
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The fact that most people make some decisions based on intuition rather than calculation is（）
A. consistent with the cost-benefit model because calculating costs and benefits is irrational
B. inconsistent with the cost-benefit model, but still rational
C. consistent with the cost-benefit model because most people intuitively weigh costs and benefits
D. irrational, because intuition is usually wrong
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
A. Josh can’t go the game and finish the paper
B. Josh prefers schoolwork to football games
C. going to the game won’t be fun
D. writing the paper is easier than going to the game
One thing that distinguishes normative economic principles from positive economic principles is that（）
A. normative principles are pessimistic and positive principles are optimistic
B. normative principles reflect social norms, and positive principles reflect universal truths
C. normative principles tell us how people will behave, and positive principles tell us how people should behave
D. normative principles tell us how people should behave, and positive principles tell us how people will behave
An economic naturalist is someone who（）
A. has an innate talent for using economic concepts
B. applies economic insights to understand everyday life
C. studies the process of natural selection in a cost-benefit framework
D. uses economic arguments to protect the environment
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