2. 考研
  3. fresh fish came into as easy as to market A. Making an efficient icebox was not (68)______we might now suppose B. it also (69)__

fresh fish came into as easy as to market A. Making an efficient icebox was not (68)______we might now suppose B. it also (69)__

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问题 fresh fish came into
as easy as to market
A. Making an efficient icebox was not (68)______we might now suppose
B. it also (69)______household use
C. he used an icebox of his own design to transport his butter (70)______
D. by some forward-looking city dealers in fresh meat, (71)______, and butter
    By the mid-nineteenth century, the term "ice-box" 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 (72)
    After the Civil War (1861-1865), as ice was used to refrigerate freight cars, (73) . Even before 1880, half the ice sold in New York, Philadelphia, and Baltimore, and one-third of that sold in Boston and Chicago, went to families for their own use. This had become possible because a new household convenience, the icebox, a precursor of the modern refrigerator, had been invented.
     (74)______: In the early nineteenth century, the knowledge 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 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 (75)______, 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.
选项
答案B
解析 根据语境可知，空格所在句的意思应为：美国内战后，当冰被用在冷藏车上时，它也进入了家庭。所以，B项符合题意。
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