阅读有关图文资料，回答问题。

2014 年 11 月 21 日，中国******乘坐的专机于当地时间 18 时 20 分抵达 斐济楠迪国际机场，开始对斐济进行国事访问。

材料一 随着 2015 年贺岁档电影《爸爸去哪儿 2》的热播，南太平洋的岛国斐济成为人们向 往的旅游目的地之一。斐济由 300 多个岛屿组成，多为珊瑚礁环绕的火山岛；河流多而短小，海洋渔业资源丰富。下图为斐济简图。

材料二 读苏瓦和瓦托阿两地降水量（单位：mm）变化表

增加：在缺词处加一个漏字符号(∧)，并在其下面写出该加的词。

删除：把多余的词用斜线(\)划掉。

修改：在错的词下画一横线，并在该词下面写出修改后的词。

注意：1). 每处错误及其修改均仅限一词；

2). 只允许修改10处，多者(从第11处起)，不计分。

    Edison was a great scientist or inventor. As may not be known to many people, born in a peasant families, he received few school education. He started to go to school at age of eight and remain at school for only three months. It's said that he always asked some strange questions which his teachers couldn't answer them. In fact, he was a man full with imagination. He made over 2,000 inventions in his life, covered many fields, such as the electric lamp, film, etc. He played an important part to the social develop and the progress of human beings.

①民族区域自治适合于我国少数民族聚居的地方

②民族区域自治制度符合我国国情，体现了各族人民的根本利益

③民族区域自治制度是我国的一项基本政治制度

④民族区域自治制度开辟了中国各民族平等团结互助和谐的新时代

用打气筒将空气压入自行车胎内，主要是因为(  )