【地球是圆的】

材料一：

【世界是平的】

材料二：20世纪90年代中期，Windows视窗的开启、内容的数字化和网络浏览器的推广，极大地促进了人和人的交流，这是世界变平的创世纪时刻。忽然之间人们发现，他们可以和世界更多地方的更多人展开分工合作，并且分享更多类型的知识。

——摘编自【美】托马斯·弗里德曼《世界是平的－－21世纪简史》

【世界是通的】

材料三：“世界是平的”，可扁平的世界却以自由流通的名义悄然完成社会分层，导致贫富分化。如何解决世界贫困问题，消除贫富差距?从人类文明史来看， “一带一路”以欧亚非大陆的互联互通复兴丝绸之路文明，以期开创共同发展与文明复兴的美好前景。

——摘编自王义桅《世界是通的—“一带一路”的逻辑》

①与坏人奋勇搏斗

②在确保自身安全的前提下，做力所能及的事

③记住坏人特征，及时向公安机关报告

④保护好自己是一切前提

设$f\left(x\right)=\left\{\begin{array}{c}2e^{x-1},(x<2)\\ \log 3^{\left(x^2-1\right)},(x\ge 2)\end{array}\right.$则不等式f(x)>2的解集为（  ）

    Thang-ga(唐卡）is a special kind of painting .It was found only in Tibet,China. It started from the Tang Dynasty(唐朝). Thang-ga paintings show Tibetan people's lives. In recent years, Tang-ga paintings have caught the public's attention .At the same time,the Chinese government has also tried hard to protect the art.

    The color of Tang-ga paintings looks wonderful and special. Because of the special environment of Tibet and the excellent skills of artists, the paints(颜料) used in Thang-ga are different from other paints. They were made from minerals like gold and silver, as well as some plants. The paints were made by hand and the beautiful colors could last(持续)for hundreds of years.

    However, with the development of technology, people now use cheaper and more easily-made chemicals to make Thang-ga paints. The traditional paints used in Thang-ga paintings took a lot of work and they were made in many secret ways. Later people stopped making the paints and forgot about them. So the skills needed to make them were almost lost. The traditional Thang-ga paintings are difficult to find now.