(单词翻译:单击)
Question 20-30
Before the mid-nineteenth century,people in the United States ate most foods only in season.Drying,smoking,and salting could preserve meat for a short time,but the availability of fresh meat,like that of fresh milk,was very limited;there was no way to prevent spoilage1.But in 1810a French inventor named Nicolas Appert developed the cooking-and-sealing process of canning.And in the 1850's an American named Gail Borden developed a means of condensing and preserving milk.Canned goods and condensed milk became more common during the 1860's,but supplies remained low because cans had to be made by hand.By 1880,however,inventors had fashioned stamping and soldering2 machines that mass-produced cans from tinplate.Suddenly all kinds of food could be preserved and bought at all times of the year.
Other trends and inventions had also helped make it possible for Americans to vary their daily diets.Growing urban populations created demand that encouraged fruit and vegetable farmers to raise more produce.Railroad refrigerator cars enabled growers and meat packers to ship perishables3 great distances and to preserve them for longer periods.Thus,by the 1890's,northern city dwellers4 could enjoy southern and western strawberries,grapes,and tomatoes,previously5 available for a month at most,for up to six months of the year.In addition,increased use of iceboxes enabled families to store perishables.An easy means of producing ice commercially had been invented I the 1870's,and by 1900the nation had more than two thousand commercial ice plants,most of which made home deliveries.The icebox became a fixture6 in most homes and remained so until the mechanized refrigerator replaced it in the 1920's and 1930's.
Almost everyone now had a more diversified7 diet.Some people continued to eat mainly foods that were heavy in starches8 or carbohydrates,and not everyone could afford meat.Nevertheless,many families could take advantage of previously unavailable fruits,vegetables,and dairy products to achieve more varied9 fare.
20.What does the passage mainly discuss?
(A)Causes of food spoilage.
(B)Commercial production of ice
(C)Inventions that led to changes in the American diet.
(D)Population movements in the nineteenth century.
21.The phrase "in season"in line 2refers to
(A)a kind of weather
(B)a particular time of year
(C)an official schedule
(D)a method of flavoring food.
22.The word "prevent"in line 4is closest in meaning to
(A)estimate
(B)avoid
(C)correct
(D)confine
23.During the 1860's,canned food products were
(A)unavailable in rural areas
(B)shipped in refrigerator cars
(C)available in limited quantities.
(D)A staple10 part of the American diet.
24.It can be inferred that railroad refrigerator cars came into use
(A)before 1860
(B)before 1890
(C)after 1900
(D)after 1920
25.The word "them"in line 14refers to
(A)refrigerator cars
(B)perishables
(C)growers
(D)distances
26.The word "fixture"in line 20is closest in meaning to
(A)luxury item
(B)substance
(C)commonplace object
(D)mechanical device
27.The author implies that in the 1920's and 1930's home deliveries of ice
(A)decreased in number
(B)were on an irregular schedule
(C)increased in cost
(D)occurred only in the summer.
28.The word "Nevertheless"in line 24is closest in meaning to
(A)therefore
(B)because
(C)occasionally
(D)however
29.Which of the following types of food preservation11 was NOT mentioned in the passage?
(A)Drying
(B)Canning
(C)Cold storage
1
spoilage
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n.(食物等)变质,损坏 | |
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2
soldering
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n.软焊;锡焊;低温焊接;热焊接v.(使)焊接,焊合( solder的现在分词 ) | |
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3
perishables
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n.容易腐坏的东西(尤指食品)( perishable的名词复数 ) | |
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4
dwellers
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n.居民,居住者( dweller的名词复数 ) | |
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5
previously
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adv.以前,先前(地) | |
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fixture
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n.固定设备;预定日期;比赛时间;定期存款 | |
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7
diversified
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adj.多样化的,多种经营的v.使多样化,多样化( diversify的过去式和过去分词 );进入新的商业领域 | |
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starches
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n.淀粉( starch的名词复数 );含淀粉的食物;浆粉v.把(衣服、床单等)浆一浆( starch的第三人称单数 ) | |
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varied
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adj.多样的,多变化的 | |
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staple
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n.主要产物,常用品,主要要素,原料,订书钉,钩环;adj.主要的,重要的;vt.分类 | |
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preservation
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n.保护,维护,保存,保留,保持 | |
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additives
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n.添加剂( additive的名词复数 ) | |
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