《2014-2015年全球竞争力报告》显示，瑞士、新加坡和美国的竞争力位列前三；中国内地的竞争力排名位列第28位，在金砖国家中保持领先地位。这表明（  ）
①当今中国是发展最快、变化最大的国家之一，但我国还属于发展中国家
②人民日益增长的物质文化需要同落后的社会生产之间的矛盾已彻底解决
③我国国际地位和国际影响力进一步提高，社会主义建设取得巨大成就
④中国作为一个负责任的大国在国际政治舞台上发挥着越来越重要的作用

阅读理解

　　Lang Lang is a famous Chinese pianist. He was born in 1982 in Shenyang. He showed his talent(天赋)for playing the piano when he was two. He began to take piano lessons at the age of 3. At the age of 5, he won the Shenyang Piano Competition. When he was 11, he won the first prize at the Fourth International Young Pianists Competition.

    He began his study at Curtis Institute(学院)in America when he was 15. He became the first Chinese student at the institute. During his study there he made great progress and became a top pianist. On August 14th, 1999, the great Andre Watts was ill so Lang Lang played at concert instead of him and he was successful. Then he became famous all over the world.

    In August of 2008, more than 5 billion people watched Lang Lang's performance at the opening ceremony(开幕式)of the Beijing Olympic Games. He also played at the opening ceremony of the Shanghai Expo(世博会).

读一读，做一做。

音乐喷泉

    爸爸带我去观赏音乐喷泉。

    灯光暗下来，乐曲响了起来，我“看见”音乐了！

    音乐，以前我只听过它美妙的声音，今天，我看见它的模（mú  mó）样了。它变成了许多会奏（zòu  zhòu）乐的小水珠。她们像一群翩翩起舞的小仙女，忽而飞起，忽而落下；忽而聚在一起，忽而向四处散开；忽而化作春风，忽而又变成波浪……

    我感觉自己像一朵奇异的云，也跟着飞起来，舞起来。

    回家的路上，爸爸告诉我，音乐喷泉装有一个特别的控制器。控制器根据乐曲声音的高低强弱，发出不同的信号，让喷泉喷出或高或低，或多或少的水珠。这样，我们就能边看喷泉变听美妙的音乐了。