大学英语四级阅读练习题及答案十五(4页).doc
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1、-The fridge is considered necessary. It has been so since the 1960s when packaged food list appeared with the label: Store in the refrigerator.In my fridgeless Fifties childhood, 1 was fed well and healthy. The milkman came every day, the grocer, the butcher (肉商), the baker, and the ice-cream man de
2、livered two or three times each week. The Sunday meatwould last until Wednesday and surplus(剩余的) bread and milk became all kinds of cakes. Nothing was wasted, and we were never troubled by rotten food. Thirty years on food deliveries have ceased, fresh vegetables are almost unobtainable in the count
3、ry.The invention of the fridge contributed comparatively little to the art of food preservation. Many well-tried techniques already existed - natural cooling, drying, smoking, salting, sugaring, bottling.What refrigeration did promote was marketing - marketing hardware and electricity, marketing sof
4、t drinks, marketing dead bodies of animals around the world in search of a good price.Consequently, most of the worlds fridges are to be found, not in the tropics where they might prove useful, but in the rich countries with mild temperatures where they are climatically almost unnecessary. Every win
5、ter, millions of fridges hum away continuously, and at vast expense, busily maintaining an artificially-cooled space inside an artificially-heated house - while outside, nature provides the desired temperature free of charge.The fridges effect upon the environment has been evident, while its contrib
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