Question

英语问题，答案及英文的答案原因

2.Using a day at the beach as an example ，what is the opportunity cost of leisure？
A. Leisure is free ,for example ,you don’t have to pay for the benefits of enjoying the sun or relaxing at the beach .
B. According to economists ,leisure activities are the only activities that do not carry an opportunity cost.
C. The opportunity cost of leisure at the beach is the value of the things that you could have produced during the time you were at the beach .For example, you could have used the time to work and earn some money.
D. Leisure has an opportunity cost only if there is a cost associated with it . For example ,entering the beach may require you to pay a fee.

Answer 1

答案是C，问题问得是什么是opportunity cost. 这个经济词儿的解释是The cost of passing up the next best choice when making a decision. For example, if an asset such as capital is used for one purpose, the opportunity cost is the value of the next best purpose the asset could have been used for.

也就是说如果有两个选择，如果选择一定的A就会失去一定数量的B，所失去的B就是opportunity cost.
比方说，商家卖一定的商品，但是只有1000元，假设A跟B的利润都是百分之20
但是A的原价是100元，B是500。也就是说能全买两个B，如果牺牲掉一个B，能多买5个A。那所牺牲掉的B就是题目所说的opportunity cost。

C的答案所说的是leisure 跟work之间作选择。是opportunity cost 的延伸example.
所以是C。

Answer 2

选C

原因：The definition of opportunity cost is the cost of any activity measured in terms of the value of the best alternative that is not chosen. It is the sacrifice related to the second best choice available to someone who has picked among several mutually exclusive choices.
It fits exactly the description of choice C. If you work instead, you can get paid. And the amount of your income from work should be the opportunity cost of leisure.

希望可以帮到你~

Answer 3

c