[解析]
36 F.推理判断题.根据上文For over one hundred and fifty years,Americans of all social classes have worn blue jeans.以及Whether they are worn for work or for fashion today.可知,一百五十多年来,所有社会阶层的美国人都穿着蓝色牛仔裤.以及他们今天是为工作还是时尚穿着.这里想说自从它们被Levi Strauss发明后,他们成了美国消费文化的象征,故选F.
37 A.推理判断题.根据上文Levi Strauss was born in Germany in 1829.可知,列维斯特劳斯于1829年出生于德国.这里想说作为一个小男孩,他和他的家人搬到了美国,故选A.
38 D.推理判断题.根据上文At first,he planned to sell sewing supplies and cloth.可知,起初,他计划出售缝纫用品和布料.这里想说然而,他没有从这些产品中获得生意,故选D.
39 C.推理判断题.根据上文In 1873,Strauss received a letter from a Jewish tailor named Jacob Davis who had invented a process of connecting pockets with copper rivets(铆钉).This made the pants last a long time.Because Davis did not have the money to patent his idea,he offered to share it with Strauss if Strauss would agree to pay for the patent.可知,1873年,施特劳斯收到了一位名叫雅各布戴维斯的犹太裁缝的一封信,他发明了一个用铜铆钉连接口袋的过程.这使得裤子持续了很长时间.因为戴维斯没有钱为他的想法申请专利,如果施特劳斯同意支付专利权,他愿意与施特劳斯分享.这里想说他做了并且从那以后开始做有铆钉的Levi牛仔裤,故选C.
40 E.推理判断题.根据下文The business has been growing ever since and Levi Strauss' company is now one of the largest clothing companies in the world.可知,自那以后,公司业务一直在增长,Levi Strauss公司现在是世界上最大的服装公司之一.这里想说他为美国的服装业做出巨大的贡献,故选E.