2. 外语
  3. Public goods are those commodities whose enjoyment nobody can be effectively excluded

Public goods are those commodities whose enjoyment nobody can be effectively excluded

admin2014-02-11  57
问题 Public goods are those commodities whose enjoyment nobody can be effectively excluded
选项
答案公共物品就是为所有人提供方便和享受的东西。
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成人本科学位英语

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