Marketing ideas have included introducing extra lines, in addition to dairy products, which the milkmen can carry to increase business.One dairyman said, “It won't be long before the milkman delivers more bread than milk.” Some milkmen deliver potatoes, and it seems as though variety will be limited only by the size of the trucks.

　　So the milkman is likely to remain a familiar figure, and the dairy products he sells are unlikely to change very much in this decade.Flavored milk is popular on the Continent.In Britain those who like it buy plain milk and add their own flavoring.Even the returnable bottle continues to be used.As long as it has a reasonable life — 30 to 40 trips are usual — the cost of collection and cleaning is worthwhile.

　　语篇解读：本文介绍了送奶工的工作方便了人们的生活，但由于乳品业劳动力缺乏，公司担心乳制品的销售量会下降。

　　68．The milkmen now start earlier on their delivery rounds than before because ________.

　　A．there is an increasing demand for milk delivery

　　B．they hope to reach the customers' home in time

　　C．they have to collect the money for the week's milk house to house

　　D．dairies are short of deliverymen and the companies worry about falling sales

　　解析：选D。事实细节题。从文章的第一段最后一句和第二段最后一句可知乳品业缺少劳动力，公司担心乳制品的销售量会下降。

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