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1、精选优质文档-倾情为你奉上托福阅读真题集锦（一）PASSAGE 1By 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 hospita
2、ls, 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, and Baltimore, and one-third of that sold i
3、n 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.Making an efficient icebox was not as easy as we might now suppose. In the early nineteenth century, the knowl
4、edge 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 t
5、o 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, T
6、homas Moore, had been on the right track. He owned a farm about twenty miles outside the city of Washington, for which the village of Georgetownwas 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
7、 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 ma
8、inly 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 century2. According to the passage , when did the word icebox become part of the language of theUnited States?(A) in 1803(B) sometime bef
9、ore 1850(C) during the civil war(D) near the end of the nineteenth century3. The phrase forward-looking in line 4 is closest in meaning to(A) progressive(B) popular(C) thrifty(D) well-established4. The author mentions fish in line 4 because(A) many fish dealers also sold ice(B) fish was shipped in r
10、efrigerated freight cars(C) fish dealers were among the early commercial users of ice(D) fish was not part of the ordinary persons diet before the invention of the icebox5. The word it in line 5 refers to(A) fresh meat(B) the Civil War(C) ice(D) a refrigerator6. According to the passage , which of t
11、he following was an obstacle to the development of theicebox?(A) Competition among the owners of refrigerated freight cars(B) The lack of a network for the distribution of ice(C) The use of insufficient insulation(D) Inadequate understanding of physics7. The word rudimentary in line 12 is closest in
12、 meaning to(A) growing(B) undeveloped(C) necessary(D) uninteresting8. According to the information in the second paragraph, an ideal icebox would(A) completely prevent ice from melting(B) stop air from circulating(C) allow ice to melt slowly(D) use blankets to conserve ice9. The author describes Tho
13、mas Moore as having been on the right track (lines 18-19) toindicate that(A) the road to the market passed close to Moores farm(B) Moore was an honest merchant(C) Moore was a prosperous farmer(D) Moores design was fairly successful10. According to the passage , Moores icebox allowed him to(A) charge
14、 more for his butter(B) travel to market at night(C) manufacture butter more quickly(D) produce ice all year round11. The produce mentioned in line 25 could include(A) iceboxes(B) butter(C) ice(D) marketsPASSAGE 2The geology of the Earths surface is dominated by the particular properties of water. P
15、resent on Earth in solid, liquid, and gaseous states, water is exceptionally reactive. It dissolves, transports, and precipitates many chemical compounds and is constantly modifying the face of the Earth. Evaporated from the oceans, water vapor forms clouds, some of which are transported by windover
16、 the continents. Condensation from the clouds provides the essential agent of continental erosion: rain. Precipitated onto the ground, the water trickles down to form brooks, streams, andrivers, constituting what are called the hydrographic network. This immense polarized network channels the water
17、toward a single receptacle: an ocean. Gravity dominates this entire step in thecycle because water tends to minimize its potential energy by running from high altitudes toward the reference point, that is, sea level.The rate at which a molecule of water passes though the cycle is not random but is a
18、 measure of the relative size of the various reservoirs. If we define residence time as the average time for awater molecule to pass through one of the three reservoirs atmosphere, continent, and ocean we see that the times are very different. A water molecule stays, on average, eleven days in the a
19、tmosphere, one hundred years on a continent and forty thousand years in the ocean. This last figure shows the importance of the ocean as the principal reservoir of the hydrosphere but also the rapidity of water transport on the continents.A vast chemical separation process takes places during the fl
20、ow of water over the continents. Soluble ions such as calcium, sodium, potassium, and some magnesium are dissolved and transported. Insoluble ions such as aluminum, iron, and silicon stay where they are and form thethin, fertile skin of soil on which vegetation can grow. Sometimes soils are destroye
21、d and transported mechanically during flooding. The erosion of the continents thus results from two closely linked and interdependent processes, chemical erosion and mechanical erosion. Their respective interactions and efficiency depend on different factors.1. The word modifying in line 4 is closes
22、t in meaning to(A) changing(B) traveling(C) describing(D) destroying2. The word which in line 5 refers to(A) clouds(B) oceans(C) continents(D) compounds3. According to the passage , clouds are primarily formed by water(A) precipitating onto the ground(B) changing from a solid to a liquid state(C) ev
23、aporating from the oceans(D) being carried by wind4. The passage suggests that the purpose of the hydrographic network (line 8) is to(A) determine the size of molecules of water(B) prevent soil erosion caused by flooding(C) move water from the Earths surface to the oceans(D) regulate the rate of wat
24、er flow from streams and rivers5. What determines the rate at which a molecule of water moves through the cycle, as discussed inthe third paragraph?(A) The potential energy contained in water(B) The effects of atmospheric pressure on chemical compounds(C) The amounts of rainfall that fall on the con
25、tinents(D) The relative size of the water storage areas6. The word rapidity in line 19 is closest in meaning to(A) significance(B) method(C) swiftness(D) reliability7. The word they in line 24 refers to (A) insoluble ions(B) soluble ions(C) soils(D) continents8. All of the following are example of soluble ions EXCEPT(A) magnesium(B) iron(C) potassium(D) calcium9. The word efficiency in line 27 is closest in meaning to(A) relationship(B) growth(C) influence(D) effectiveness答案：PASSAGE 1BBACC DBCDA BPASSAGE 2AACCD CABD专心-专注-专业