文勇的新托福黄金&ccedil

forhumanbeings facial expressions that

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Unformatted text preview: that is not mentioned in the highlighted sentence. Choice 3 introduces information about how long mountains resist forces of nature in absolute terms; the highlighted sentence says that the resistance is relatively short in geological terms, which is an entirely different meaning. Choice 4 compares mountains to other land forms. The highlighted sentence does not make any such comparison. 10. ○4 This is a Factual Information question asking for specific information that can be found in paragraph 6. The correct answer is choice 4, "sand." Sentences 3 and 4 of that paragraph describe erosion in dry areas. Sand is carried by wind and bombards rock; this bombardment breaks down the rock, and, as a result, more sand is created. Thus sand is both the cause and the result of erosion, so choice 4 is correct. Glacial activity (choice 1) and tree roots (choice 3) are both mentioned only as causes of erosion. Rock debris (choice 2) is mentioned only as a result of erosion. 11. ○1 This is an Insert Text question. You can see the four black squares in paragraph 6 that represent the possible answer choices here. Under very cold conditions, rocks can be shattered by ice and frost. Glaciers may form in permanently cold areas, and these slowly moving masses of ice cut out valleys, carrying with them huge quantities of eroded rock debris. ■ In dry areas the wind is the principal agent of erosion. ■ It carries fine particles of sand, which bombard exposed rock surfaces, thereby wearing them into yet more sand. ■ Even living things contribute to the formation of landscapes. ■ Tree roots force their way into cracks in rocks and, in so doing, speed their splitting. In contrast, the roots of grasses and other small plants may help to hold loose soil fragments together, thereby helping to prevent erosion by the wind. The sentence provided, "Under different climatic conditions, another type of destructive force contributes to erosion,'' is best inserted at square 1. Square 1 is correct because the inserted sentence is a transitional sentence, moving the discussion away from one set of climatic conditions (cold) to another set of climatic conditions (dryness). It is at square 1 that the transition between topics takes place. Squares 2, 3, and 4 all precede sentences that provide details of dry climatic conditions. No transition is taking place at any of those places, so the inserted sentence is not needed. 88 Mail@liuwenyong.com 在在在在在在 www.liuwenyong.com 在在在在在在在在在在在在在在在,在在在在在在在在在在 12.○Constructive processes: 1, 5, 6 ○Destructive processes: 3, 7 This is a Fill in a Table question. It is completed correctly below. The correct choices for the "constructive processes” column are 1, 5, and 6. Choices 3 and 7 are the correct choices for the "destructive processes" column. Choices 2 and 4 should not be used in either column. 89 Mail@liuwenyong.com 在在在在在在 www.liuwenyong.com 在在在在在在在在在在在在在在在,在在在在在在在在在在 在在在在 在在...
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This note was uploaded on 09/17/2013 for the course LANGUAGE 13DL208 taught by Professor Wang during the Fall '13 term at East China Normal University.

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