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Opportunity cost
200306-10-Q1
A student decides to stay in her room to do some work rather than going to the cinema.
What is the opportunity cost of her decision?
答案:
分析Analysis
Opportunity cost is the value of the best alternative forgone when making an economic choice.
机会成本是做一个经济决定时”放弃的最好的其他选择的价值”.
- When deciding to “stay in her room”, she gave up the best alternative (benefits of) “going to the cinema”, thus A.
当决定留在家里做作业时, 放弃了去电影院娱乐得到的好处, 正确答案A.
- “the improvement in the mark” is the benefits she will obtain, NOT benefits forgone.
“成绩提高”是她做完这个决定后得到的好处, 不是“因为这个决定放弃的其他好处”.
- “the cost of extra electricity” is part of direct costs caused by the current choice, NOT best alternative benefits forgone
“多花的电费”是做这个决定的直接成本, 不是“放弃的其他选择中最好的”
- “the money saved” is benefits due to current choice, NOT best alternative benefits forgone
“省下的钱”是现在决定的好处，不是“放弃的其他选择中最好的”
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