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【单选题】
The fridge is considered a necessity. It has been so since the 1960s when packaged food first appeared with the label: 'store in the refrigerator. ' In my fridgeless Fifties childhood, I was fed well and healthily. The milkman came daily, the grocer, the butcher, the baker, and the ice-cream man delivered two or three times a week. The Sunday meat would last until Wednesday and surplus 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 country. The invention of the fridge contributed comparatively little to the art of food preservation. A vast way of well-tried techniques already existed--natural cooling, drying, smoking, salting, sugaring, bottling... What refrigeration did promote was marketing--marketing hardware and electricity, marketing soft drinks, marketing dead bodies of animals around the globe in search of a good price. Consequently, most of the world's fridges are to be found, not in the tropics where they might prove useful, but in the wealthy countries with mild temperatures where they are climatically almost unnecessary. Every winter, 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 fridge's effect upon the environment has been evident, while its contribution to hu- man happiness has been insignificant. If you don't believe me, try it yourself, invest in a food cabinet and turn off your fridge next winter. You may miss the hamburgers, but at least you will get rid of that terrible hum. Why does the author say that nothing was wasted before the invention of fridges?
A.
People would not buy more food than was necessary.
B.
Food was delivered to people two or three times a week.
C.
Food was sold fresh and did net get rotten easily.
D.
People had effective ways to preserve their food.
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参考答案:
举一反三
【单选题】在临床上多发性骨髓瘤的突出症状包括
A.
反复感染
B.
骨骼疼痛
C.
广泛性出血
D.
不规则发热
E.
贫血
【判断题】深圳市管道液化石油气主要成分是甲烷和少量丙烷、丁烷等。
A.
正确
B.
错误
【单选题】FX系列PLC中32位乘法指令是()2
A.
DADD
B.
ADD
C.
DSUB
D.
DMUL
【判断题】液化石油气主要成分是丙烷和丁烷。
A.
正确
B.
错误
【单选题】韩愈的《讳辩》主要是为唐代哪位诗人辩护?()
A.
柳宗元
B.
刘禹锡
C.
杜牧
D.
李贺
【单选题】家用瓶装液化石油气主要成分是烷烃和烯烃系列的混合物,在一标准大气压下各成份的沸点如下表所示,常温下液化石油气很难用尽,瓶内常有残留物,该残留物的主要成份是(  ) 物质名称 甲烷 乙烷 丙烷 丁烷 戊烷 沸点(℃) -161.7 -88.6 -42.2 -0.5 36.1 物质名称 乙烯 丙烯 丁烯 戊烯 沸点(℃) -102.4 -47.7 -6.5 30.1
A.
甲烷乙烯
B.
丁烷丁烯
C.
戊烷戊烯
D.
丙烷丙烯
【多选题】液化石油气主要成分是()个碳原子的碳氢化合物。
A.
2
B.
3
C.
4
D.
5
【单选题】液化石油气主要成分有( )和丁烷。
A.
甲烷
B.
乙烷
C.
丙烷
【单选题】账户开设的依据是
A.
会计的核算方法
B.
会计科目
C.
会计方法
D.
会计等式
【单选题】韩愈的《讳辩》主要是为唐代哪位诗人辩护?
A.
柳宗元
B.
李贺
C.
刘禹锡
D.
杜牧
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