单选题 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 (1861-1865), as ice was used to refrigerate freight cars, it also came into household use. Even before 1880, half the ice sold in New York, Philadelphia, the 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 modem refrigerator, had been invented.
As early as 1803, and ingenious Maryland farmer, Thomas Moore, bad been on the fight 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.

单选题 According to the passage, when did the word "icebox" become part of the language of the United States?
A. In 1803. B. Sometime before 1850
C. During the Civil War. D. Near the end of the nineteenth century.

单选题 The phrase "forward-looking" in paragraph 1, sentence 3 is closest in meaning to ______.
A. progressive B. popular C. thrifty D. well- established

单选题 The author mentions "fish" in paragraphl, sentence 3 because ______.
A. many fish dealers also sold ice
B. fish was shipped in refrigerated freight cars
C. fish dealers were among the early commercial users of ice
D. fish was not part of the ordinary person's diet before the invention of the icebox

单选题 The author describes Thomas Moore as having been "on the right track" in Paragraph 2, Sentence 1 to indicate that ______.
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

单选题 According to the passage, Moore's icebox allowed him to ______.
A. charge more for his butter B. travel to market at night
C. manufacture butter more quickly D. produce ice all year round