文档介绍：
ity 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.
1. What does the passage mainly discuss?
(A) The influence of ice on the diet
(B) The development of refrigeration
(C) The transportation of goods to market
(D) Sources of ice in the nineteenth century
2. 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
3. The phrase "forward-looking" in line 4 is closest in meaning to
(A) progressive
(B) popular
(C) thrifty
(D) well-established
4. The author mentions fish in line 4 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
5. The word "it" in line 5 refers to
(A) fresh meat
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