During the last few years, there has been an 【B1】______ increase in the number of shops, stores and supermarkets which provid

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问题     During the last few years, there has been an  【B1】______  increase in the number of shops, stores and supermarkets  which provide 【B2】______  for self-service. Their general purpose is to provide goods of every  【B3】 ______ attractively and cleanly and in perfect condition, so that the customer can serve herself, and then pay for the goods with the least  【B4】______  .
    The organizers of a self-service store have their difficulties. They must display a great number of goods in a 【B5】______ space  without covering up anything. They must deal with 【B6】______  foodstuffs requiring different ranges of temperature; and they must arrange a  【B7】______  flow of customers past the cash registers without【B8】______  the operators.
    【B9】 _____________________ , rotating circular shelves, islands of display stands, racks for tubed foods,  and multi-tiered mobile stalls.
     【B10】_____________________________These are at zero Fahrenheit for frozen food, 28-32 degrees for meat and fish, and 40-50 degrees for dairy produce and provisions.
   Some of the advantages of self-service seem to be that there is no waiting to be served; there is a wide variety of choice, and it is claimed that prepacked meat and vegetables are hygienic. Shopping is said to be more "stream-lined" and more economical. 【B11】_________________________  .
【B6】
During the last few years, there has been an (36)enormous increase  in the number of shops, stores and supermarkets which provide (37) facilities for self-service.  Their general purpose is to provide goods of every (38)description attractively and cleanly and in perfect condition, so that the customer can serve herself, and then pay for the goods with the least (39)delay.
    The organizers of a self-service store have their difficulties. They must display a great number of goods in a (40) minimum space without covering up anything. They must deal with (41)perishable foodstuffs requiring different ranges of temperature; and they must arrange a (42) speedy flow of customers past the cash registers without (43) overtaxing the operators.
   (44) For the purposes of display, many devices are used such as long lengths of adjustable shelves to take various sizes of packs, rotating circular shelves, islands of display stands, racks for tubed foods, and multi-tiered mobile stalls.
   (45) Perishable foodstuffs , quick - frozen fruit, vegetables, and meat are kept in refrigerated self-service cabinets, which keep goods at the required temperatures. These are at zero Fahrenheit for frozen food, 28-32 degrees for meat and fish, and 40-50 degrees for dairy produce and provisions.
   Some of the advantages of self-service seem to be that there is no waiting to be served; there is a wide variety of choice, and it is claimed that prepacked meat and vegetables are hygienic. Shopping is said to be more "stream-lined" and more economical. (46)Nevertheless many people still prefer to be served by a small shopkeeper who knows them personally and will deliver goods to their homes.

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答案perishable

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