摊贩要养家糊口,城管要执法。一边是城市的“里子”,一边是城市的“面子”。在现实生活中往往会出现这样的情况:城管部门如果采取劝阻等柔性方式执法,则无法从根本上解决占道经营的问题,很多时候还异化成了“猫鼠游戏”;如果严格执法,则常常面临摊贩的强烈抵制。加上城管执法人员自身素质参差不齐,偶发的暴力执法行为更易激起暴力抗法。

武汉市洪山区城管在不影响交通的前提下在固定区域为小商小贩设立“地摊夜市”,这样既解决了中低收入者的生计问题,又满足了市场需求,也实现了城市的整洁。

设a，b，c是某三角形的三边长，证明a²（b+c﹣a）+b²（c+a﹣b）+c²（a+b﹣c）≤3abc．

阅读理解
    American country music is also known as(被称为)country Western music．It has a very long history．It comes from the folk songs of immigrants(移民)from Britain．
    Country music uses simple music and words to express everyday feelings such as loneliness，love，and sadness．That is to say，country music describes life．It talks about friends and enemies，trucks and roads，farms and crops．People in many parts of the world like country music，because everyone can understand what the music is about．
    Country Western music became popular first among cowboys(牛仔)in the American West courttryside．Cowboys had to take care of cows day and night．When they were alone with the cows，they often sang beautiful and peaceful songs to calm the animals and to overcome their own fear．They were not well—educated and so they sang about their daily life in very simpie words．They played guitars，violins，and other instruments．  In the south of America，many people added instruments from their homes，like bottles and spoons．  When cowboys visited their friends and families on holidays like Thanksgiving，they usually sang and played country Western music．
    In recent years，many musicians have made country Western music a little different from the one in the past．These changes make the songs sound even better．Today singers such as Garth Brooks， Reba McEntire，Emmylou Harris，Lyle Lovett，Eddie Rabbitt，LeAnn Rimes，Randy Travis，and a group called Alabama are singing and playing in different styles．They have brought country Western music more and more fans from all over the world．

下列各句中，没有语病的一项是（   ）

如图所示，放在水平桌面上的杯子中装有0℃的冰水混合物，水较少，冰块较大，冰与杯底有接触且对杯底有压力，在冰块熔化的过程中，下列判断正确的是（  ）