[解析]
(1)B.推理判断题.根据第一段There's traffic coming from everywhere.Four buses from four different directions.For a child on a bike that's really confusing!可知阿姆斯特丹到处都是车流,四辆公共汽车来自四个不同的方向.对于一个骑自行车的孩子来说,这真的很让人困惑!第四段Lotta became junior cycle mayor in June last year when she won a contest in which school children were asked to come up with plans to make cycling safer and more fun.可知Lotta被任命为自行车小市长是因为她提出了让骑自行车更安全、更有趣的计划.由此推知阿姆斯特丹任命自行车小市长是为了确保儿童骑自行车更安全.故选B.
(2)B.词义猜测题.根据句中的a city known as the bicycle capital of the world和下句The number of bicycles in Amsterdam is estimated at 810,000 more than the city's 750,000 inhabitants and 63% of the population cycle daily.可知阿姆斯特丹被称为世界自行车之都,自行车在这里是主要的,人们熟练使用的交通工具,设立自行车小市长没有必要,是多余的.下段But children who cycle in Amsterdam face challenges.与上文形成转折,所以画线词语superfluous应该是"没有必要的,多余的",与unnecessary同义,A.Important重要的;B.Unnecessary不必要的;C.Difficult困难的;D.Valuable有价值的.故选B.
(3)A.观点态度题.根据最后一段"They see it works really well," Boerma,the senior major,says. "I talk to the parents.Lotta talks to the children.And if you look at the city through the eyes of a child,you will also make it accessible for others.A city that's good for an eight﹣year﹣old is also good for an 88﹣year﹣old."可知Boerma认为任命自行车小市长很有效,可以用孩子的眼光看城市,管理城市.由此判断出Boerma对这一举措是赞成的,A.Favorable赞成的;B.Cautious谨慎的;C.Ambiguous模棱两可的;D.Disapproving不同意的.故选A.