题目内容
Purchase of green goods provides a public good and is required.
查看答案
搜索结果不匹配？点我反馈
更多问题
The amount of green goods is a public good and will be limited by free riding.
The amount of green goods is a private good and will not be limited by free riding.
Moral Suasion is about urging people to preserve the environment.
With Moral Suasion those who don't participate in preserving the environment are free riding on the people who do.
微信支付 
支付宝支付