How much do you laugh and smile during the day? Do you take your life and your illness or injury so 1 that there is no room for joy to fill you? Want a totally free, simple way to lift your 2 and improve your health with no medicine needed? Then laughing and smiling is 3 to you.

    So laugh your way to happiness.4 it takes to put a smile on your face is what you should be doing. Research shows that laughing can increase the immune system,5 the body to stay disease free and fight colds and the flu.

    If you are facing an illness, having a positive life opinion and a 6 of humor will keep your body open to healing. If you are healthy, laughing will help to make sure you stay that way, and can 7 enjoyment to your work and home life and 8 your daily stress.

    Certainly, it can be 9 to keep a positive opinion of life all the time. Simply taking the time to 10 on the positive and treat for the good things 11 in your life can help 12, but if you are struggling with negative emotions that you just can't seem to 13, there are tools that can help.

    There are so many things out there to smile about and 14 you have to do is find 15. Practice looking for the bright 16 of every situation. Avoid the negative: don't 17 yourself with your own problems—or 18 others for their “shortcomings”. And don't pay no attention to the joy in everyday things. Create your own “Laugh for Health”19 - anything to add to your collection and to give you fresh materials that 20 to you.

城市自产生以来，就一直是文明的要素和载体。在不同的历史阶段，城市的发展原因、发展动力，城市的功能、结构，城市的地位、作用都有明显的差别。阅读下列材料，根据要求回答问题。

材料一：随着农村商品经济水平的提高，在明代中后期，一批乡村市镇脱颖而出，成为手工业和商业中心。广东茂名梅篆墟，地处水陆交驰的交通线上，各地商人来这里坐肆列市。清初叶梦珠记述，松江府朱泾镇标布盛行，富商巨贾操重资而来市者，白银动以数万计。松江府新场镇以盐场新迁而名，赋为两浙之最，是著名盐业市镇。正德年间《姑苏志》载该府市镇达73个之多，以苏州府吴江县盛泽镇为例，东南至新杭市5里，东至王江泾镇6里，北至平望镇l5里，西至震泽镇30里，至南浔镇50里。

——摘编自《中国全史》，吉林大学出版社（2011年版）

材料二：18世纪60年代，曼彻斯特创立了第一家棉纺厂；1776年，开凿曼彻斯特至利物浦港的运河，从而开通了远洋航线。1830年史蒂芬孙修建从曼彻斯特到利物浦的铁路，这是第一条完全用机车牵引的铁路。1802年，曼彻斯特共有棉纺厂52家，1809年增至64家，到1830年达到99家。至此曼彻斯特棉纺织业的发展跨上了一个新台阶，进而改变了曼彻斯特乃至于整个世界的面貌。

——摘编自《曼彻斯特科学博物馆说明》

材料三：《19世纪西欧主要国家与中国城市和农村人口统计表》

请回答：

你觉得本文写邓小平，哪些地方写得特别生动有趣？

 一般来说，南、北半球气温从低纬度向两极逐渐　____ 　；在降水方面，赤道地区是　____ 　区．