“三段论”是常见的逻辑推理方式，但有的同学在说话和写文章中经常会用错，其中一个典型的错误就是“四项错误”，如：我校足球队是第一流的；小江是我校足球队队员；小江的足球水平是一流的。

三段论推理中应该有一个相同的“项”，可是有时会不注意这个“项”并不是一个概念，从而出现四个项，上述推理中“中间项”分别为“足球队”和“足球队员”，不是一个概念，出现了“四项错误”，根据上面的例子指出下面的三段论中的推理错误。

①中国人是有志气的；我是中国人；我是有志气的。

②美国人是富有的；享利是美国人；亨利是富有的。

    Baron Pierre de Coubertin was a Frenchman. At his time sports were not taught in French schools. De Coubertin believed that sports should go hand in hand with studies. He had an idea. His idea was to begin the Olympics all over again.

    Sports teachers of other countries liked De Coubertin ideas. So in 1896, the modern Olympic Games were held in Athens, Greece. Since then the Olympics have been held once every four years, except three times, when there were wars.

    The modern Olympic games have many foot races and field sports programs. The longest race in the games is called marathon（马拉松）.

    Before the start of the Olympic Games, runners carry lighted torch(火炬) through many nations towards the stadium（体育场 ）where the games will be held. These sportsmen are from different countries. Yet they work together to carry the Olympic torch. It is passed from runner to runner,  When the last runner enters the stadium, he or she places the torch in a special basin filled with oil. It catches fire. It is then, only then, that the Olympic Games can begin.

    The Olympic flame（火焰）burns throughout the games. It is the flame of peace.

如图是某同学设计的验证氧气约占空气总体积$\frac{1}{5}$的实验装置图。下列关于操作过程对实验结果影响的推测正确的是（ ）

小丽今年12岁，她每2年去一次北京，那么她12年中去了____次北京。