首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
By the mid-nineteenth century, the term "icebox" had entered the American language, but ice was still only beginning to affect t
By the mid-nineteenth century, the term "icebox" had entered the American language, but ice was still only beginning to affect t
admin
2010-04-12
61
问题
By the mid-nineteenth century, the term "icebox" had entered the American language, but ice was still only beginning to affect the diet of ordinary citizens in the United States. The ice trade grew with the growth of cities. Ice was used in hotels, taverns, and hospitals, and by some forward-looking city dealers in fresh meat, fresh fish, and butter. After the Civil War (1860--1865), as ice was used to refrigerate fish in freight cars, it also came into household use. Even before 1880, half the ice sold in New York, Philadelphia, and Baltimore went to families for their own use. This had become possible because a new household convenience, the icebox, a precursor (先驱) of the modem refrigerator, had been invented.
Making an efficient icebox was not as easy as we might now suppose. In the early nineteenth century, the knowledge of the physics of heat, which was essential to a science of refrigeration, was rudimentary. The commonsense notion that the best icebox was one that prevented the ice from melting was of course mistaken, for it was the melting of the ice that performed the cooling. Nevertheless, early efforts to economize ice included wrapping the ice in blankets, which kept the ice from doing its job. Not until near the end of the nineteenth century did inventors achieve the delicate balance of insulation and circulation needed for an efficient icebox.
But as early as 1803, an ingenious Maryland farmer, Thomas Moore, had been on the right track. He owned a farm about twenty miles outside the city of Washington, for which the village of Georgetown was the market center. When he used an icebox of his own design to transport his butter to market, he found that customers would pass up the rapidly melting stuff in the tubs of his competitors to pay a premium price for his butter, still fresh and hard in neat, one-pound bricks. One advantage of his icebox, Moore explained, was that farmers would no longer have to travel to market at night in order to keep their produce cool.
The author describes Thomas Moore as having been "on the right track" (Lines 1-2, Para. 3)to indicate that______.
选项
A、the road to the market passed close to Moore’s farm
B、Moore was an honest merchant
C、Moore was a prosperous farmer
D、Moore’s design was fairly successful
答案
D
解析
“track”的基本含义是“轨道,跑道”。在这里,“on the right track”就是“走上正确的道路,摸着了门路”的意思。因此,正确答案是D项。
转载请注明原文地址:https://kaotiyun.com/show/Jqj7777K
0
大学英语四级
相关试题推荐
Beforethe20thcenturythehorseprovideddaytodaytransportationintheUnitedStates.Trainswereusedonlyforlong-distan
Lessonsfromthe1918FluThelasttimeanowinfluenzavirusreachedpandemiclevelswasin1968,buttheepisodewasnots
Japanisanunusualmixtureoftraditionalandultra-modern.Thiscanbeconfusingforthevisitorbecause,althoughitlooksqu
______(他趁没人看见)byanyone,heescaped.
TheChineseNewYearisabigtraditionalholidayinSingapore.OnitsEve,whilemanywill【C1】______forthereuniondinner,o
Whennextyear’scropofhigh-schoolgraduatesarriveatOxfordUniversityinthefallof2009,they’llbejoinedbyanewface:
A、Heisnervousabouttheexam.B、Heislookingforajob.C、Hedoesn’tdaretotelllies.D、Hedoesn’tknowhowtoanswertheq
E1Ninoisadisturbanceoftheworld’snormalclimatepattern.DuringElNinoevents,thewesterlytradewindsbecomesloweran
A、Theminingindustry.B、Theserviceindustry.C、Theconstructionindustry.D、Thelightindustry.A
Musicwhichis【B1】______isindividualandpersonal.Thatistosay,itcanbe【B2】______asbelongingtoa【B3】______composer.Ith
随机试题
在描述油浸岩心时,一般根据其含油面积确定颜色,若含油面积达到()左右,可按含油颜色定名,如浅棕色油浸粉砂岩。
简述多器官功能障碍综合征的发病机制。
Ⅱb型高脂蛋白血症发病的可能生化缺陷是
对房地产开发项目进行投资估算时,土地取得费用可以运用比较法来求取。()
项目风险分解的()是按项目建设的阶段对风险进行分解。
关于施工组织设计的编制原则说法错误的是()。
计算机能否输出正确的会计信息,完全取决于处理程序的正确与否。()
下列关于自然现象的说法,错误的是()。
设直线y=ax与抛物线y=x2所围成的图形面积为S1,它们与直线x=1所围成的图形面积为S2,且a<1.确定a,使S1+S2达到最小,并求出最小值.
A、Holdanexhibitiononcampus.B、GotoNewYorkCity.C、EnterforthetourtoBoston.D、MeettheEuropeanpainters.C①四个选项都是原形的
最新回复
(
0
)