——What do you often do_______ classes to relax yourselves?——We often do eye exercises, listen to music or do some running around the school.
如果把iPhone比作一个“苹果”,那么美国的苹果公司提供了种子(创意),德国、日本、韩国企业提供了肥料(核心零件),而中国的富士康则负责把它组装起来,这说明 ( )
阅读右边的程序框图,运行相应的程序,则输出S的值为( )