文勇的新托福黄金&ccedil

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Unformatted text preview: their low growth form. This enables them to avoid the worst rigors of high winds and permits them to make use of the higher temperatures immediately adjacent to the ground surface. In an area where low temperatures are limiting to life, the importance of the additional heat near the surface is crucial. The low growth form can also permit the plants to take advantage of the insulation provided by a winter snow cover. In the equatorial mountains the low growth form is less prevalent. 11. According to paragraph 6, all of the following statements are true of plants in the alpine zone EXCEPT: ○Because they are low, they are less exposed to strong winds. ○Because they are low, the winter snow cover gives them more protection from the extreme cold. ○In the equatorial mountains, they tend to be lower than in mountains elsewhere. ○Their low growth form keeps them closer to the ground, where there is more heat than further up. Paragraph 5 在Above the tree line there is a zone that is generally called alpine tundra. █Immediately adjacent to the timberline, the tundra consists of a fairly complete cover of low­lying shrubs, herbs, and grasses, while higher up the number and diversity of species decrease until there is much bare ground with occasional mosses and lichens and some prostrate cushion plants.█ Some plants can even survive in favorable microhabitats above the snow line. The highest plants in the world occur at around 6,100 meters on Makalu in the Himalayas. █ At this great height, rocks, warmed by the sun, melt small snowdrifts.█ 12. Look at the four squares [█] that indicate where the following sentence could be added to the passage. This explains how, for example, alpine cushion plants have been found growing at an altitude of 6,180 meters. Where would the sentence best fit? Click on a square to add the sentence to the passage. 13. Directions: An introductory sentence for a brief summary of the passage is provided below. Complete the summary by selecting the THREE answer choices that express the most important ideas in the passage. Some sentences do not belong in the summary because they express ideas that are not presented in the passage or are minor ideas in the passage. This question is worth 2 points. At the timberline, whether upper or lower, there is a profound change in the growth of trees and other plants. ● ● ● Answer choices ○Birch is one of the few species of tree that can survive in the extreme environments of the upper timberline. 108 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 ○There is no agreement among scientists as to exactly why plant growth is sharply different above and below the upper timberline. ○The temperature at the upper timberline is probably more important in preventing tree growth than factors such as the amount of snowfall or the force of winds. ○The geographical location of an upper timberline has...
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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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