Passage 3 Questions 11 to 15 are based on the following passage The City of Melton has been awarded the UNESCO（联合国教科文组织） Learning City Award at UNESCO's 2nd International Conference on Learning Cities hosted by Mexico in September, 2015. The award was given in recognition of the City of Melton's efforts to develop a learning city and implement the UNESCO Key Features of Learning Cities through its Community Learning Plan. Melton City Council Mayor, Ms. Sophie Ramsey was proud to accept the award on behalf of the City of Melton. "It is a huge honour to receive the UNESCO Learning City Award and the fact that the City of Melton was selected as one of the case studies along with much larger cities such as Beijing, is evidence of the innovative work being done in Melton," the Mayor said. The UNESCO Institute of Lifelong Learning launched its publication, "Unlocking the Potential of Urban Communities: Case Studies of Twelve Learning Cities" at the conference. The first-of-its-kind publication highlights examples of cities from all over the world that use the Learning city approach to enhance citizens’ individual empowerment （权力） , social combination, economic development, cultural prosperity and sustainable development. At the conference, Ms. Ramsey participated in a strategic forum of Mayors from around the world. Ms. Ramsey emphasized the benefits of developing relationships internationally, highlighting the great potential for the City of Melton to attract and engage in international business delegations, education, cultural and knowledge exchanges. "We live in a global economy and we not only have a responsibility to provide opportunities for our residents, but to also be good global citizens:' she said. "The City of Melton is experiencing some of the fastest urban growth in the country, and with growth comes opportunity." Due to its growing international reputation for work in this area, Melton City Council was invited to be one of the conference presenters. While at the conference, the Mayor was also elected by the delegates to chair a committee of experts to draft the UNESCO Statement on Sustainable Learning Cities. This invitation which was later approved by the 600 plus delegates from over 90 nations participating in the conference reflected very positively on the Council's standing within the international learning community and was a significant honour for both the Council and the Mayor.How many cities does the UNESCO publication study as examples of learning cities?
A、2.
B、9.
C、12.
D、90.
【正确答案】：C
【题目解析】：细节判断题。文章第三段提到了UNESCO的出版物，其名称为"Unlocking the Potential of Urban Communities: Case Studies of Twelve Learning Cities"（释放城市社会的潜力：十二做学习型城市的个案研究）。可见该出版物研究了十二个城市的范例，因此选项C为正确答案。
