According to the passage, public goods are______. In the third paragraph the author explains______.

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问题 According to the passage, public goods are______.
In the third paragraph the author explains______.

选项 A、what role the market system plays in producing public goods
B、how weak the market system is in producing public goods
C、why some people refuse to pay for public goods
D、what we can do to make use of the market system

答案B

解析 本题为细节题,信息点定位在第二段第一句"…The market system does not work well in producing public goods"(产生公益时,利用市场规律是行不通的)。A、D项均暗示市场规律仍在发挥作用,与原文不符;C项仅对例子就事论事,因此选B。
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