The majority of people who live in inner cities do so because they ______ .
A. dislike having to travel far to work
B. have been forced by circumstances to do so
C. don' t like the idea of living in the suburb
D. have turned against society
The free-rider problem arises because______.
A. private goods are not correctly priced in the market place
B. it is possible for an individual to consume public goods without him paying for them
C. the cost of producing public goods is too high
D. private goods may also be public goods
在涉及到补贴与反补贴措施、保障措施等问题时，享有协定规定的发展中国家待遇，包括在保障措施方面享受15年保障措施使用期，在补贴方面享受发展中国家的微量允许标准。()
A. 正确
B. 错误
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