# How deserts are formed - 科目：雅思阅读真题（Part 2） - 考频：超高频 - 最近考试：2024.5.11/2022.6.4/2020.8.15/2017.11.25 - 题目数：13 - 来源页：https://www.yaquan.site/paper/4ef28952-0db9-4481-a679-7d213c018867（在线机考练习与音频请访问该页面） - 数据更新：2026-10-29 ## 题目原文 A A desert is a barren area of landscape where little precipitation occurs and consequently living conditions are hostile for plant and animal life.Deserts have been defined and classified in a number of ways,generally combining total precipitation,number of days on which this falls, temperature,and humidity,and sometimes additional factors.In some areas,the deserts are separated by rivers,mountains or other landforms and in other areas,the borders of deserts cannot be determined. B The raising of livestock is a major economic activity in semiarid lands,where grasses are generally the dominant type of natural vegetation.The consequences of an excessive number of livestock grazing in an area are the reduction of the vegetation cover and the trampling and pulverization of the soil.This is usually followed by the drying of the soil and accelerated erosion. C Sand and dust storms are natural events that occur in arid regions where the land is not protected by a covering of vegetation.Dust storms usually start in desert margins rather than the deserts themselves where the finer materials have already been blown away. As a steady wind begins to blow, fine particles lying on the exposed ground begin to vibrate.At greater wind speeds, some particles are lifted into the air stream.When they land,they strike other particles which may be jerked into the air in their turn, starting a chain reaction. Once ejected, these particles move in one of three possible ways, depending on their size, shape and density. D The cultivation of crops has expanded into progressively drier regions as population densities have grown.These regions are especially likely to have periods of severe dryness,so that crop failures are common. Since the raising of most crops necessitates the prior removal of the natural vegetation, crop failures leave extensive tracts of land devoid of a plant cover and susceptible to wind and water erosion. E In a state of America in 20th century,a large area of farmland had become desert.And measures have been taken to prevent the reoccurring of desertification. F People have struggled to live in deserts and the surrounding semi-arid lands for millennia. Nomads have moved their flocks and herds to wherever grazing is available and oases have provided opportunities for a more settled way of life.The cultivation of semi-arid regions encourages erosion of soil and is one of the causes of increased desertification. Some nomads take the desert wherever they go. G It is a misconception that the lack of rainfall causes the desertification.Even in some arid areas, the land will recover as soon as rain comes.More desertification is caused by human activities. In the West Africa,a serious desertification causes a large number of people to lose their lives. H Although there is tremendous publicity on the severity of desertification,the researchers have never reached a consensus on the reasons and process of desertification. I Nowadays,new technologies are being applied to help solve desertification problems.Satellites have been put into use to study the impact of people and livestock on earth.However,other types of technology about the problems and process of desertification are still needed. ## 题目与答案 ### 14. the reference of irregular movement of particles the reference of irregular movement of particles - A - B - C - D - E - F **答案**：C 原文定位：Once ejected, these particles move in one of three possible ways, depending on their size, shape and density ### 15. an account that a productive-land turned into a desert in 20th century an account that a productive-land turned into a desert in 20th century - A - B - C - D - E - F **答案**：A 原文定位：In a state of America in 20th century,a large area of farmland had become desert ### 16. the types of deserts the types of deserts - A - B - C - D - E - F **答案**：A 原文定位：Deserts have been defined and classified in a number of ways, generally combining total precipitation, number of days on which this falls, temperature, and humidity, and sometimes additional factors ### 17. the method of tackling the problems of deserts the method of tackling the problems of deserts - A - B - C - D - E - F **答案**：I 原文定位：Nowadays,new technologies are being applied to help solve desertification problems.Satellites have been put into use to study the impact of people and livestock on earth ### 18. the effect of migration on desertification the effect of migration on desertification - A - B - C - D - E - F **答案**：F 原文定位：Some nomads take the desert wherever they go ### 19. the lack of agreement among the scientists about the causes of desertification the lack of agreement among the scientists about the causes of desertification - A - B - C - D - E - F **答案**：H 原文定位：Although there is tremendous publicity on the severity of desertification,the researchers have never reached a consensus on the reasons and process of desertification ### 20. the example of the fatal effects of farming practice the example of the fatal effects of farming practice - A - B - C - D - E - F **答案**：D 原文定位：Since the raising of most crops necessitates the prior removal of the natural vegetation, crop failures leave extensive tracts of land devoid of a plant cover and susceptible to wind and water erosion ### 21. 21 It is difficult to ascertain where the deserts begin in some areas. 21 It is difficult to ascertain where the deserts begin in some areas. - TRUE - FALSE - NOT GIVEN **答案**：TRUE 原文定位：in other areas,the borders of deserts cannot be determined ### 22. 22 Farming animals will increase soil erosion. 22 Farming animals will increase soil erosion. - TRUE - FALSE - NOT GIVEN **答案**：TRUE 原文定位：The consequences of an excessive number of livestock grazing in an area are the reduction of the vegetation cover and the trampling and pulverization of the soil. This is usually followed by the drying of the soil and accelerated erosion ### 23. 23 The most common cause of desertification is the lack of rainfall. 23 The most common cause of desertification is the lack of rainfall. - TRUE - FALSE - NOT GIVEN **答案**：FALSE 原文定位：It is a misconception that the lack of rainfall causes the desertification. Even in some arid areas, the land will recover as soon as rain comes. More desertification is caused by human activities ### 24. 24 The problems in West Africa are yet to be solved. 24 The problems in West Africa are yet to be solved. - TRUE - FALSE - NOT GIVEN **答案**：NOT GIVEN 原文定位：In the West Africa,a serious desertification causes a large number of people to lose their lives ### 25. 25 Media is uninterested in the problems of desertification. 25 Media is uninterested in the problems of desertification. - TRUE - FALSE - NOT GIVEN **答案**：FALSE 原文定位：Although there is tremendous publicity on the severity of desertification ### 26. 26 Technology studying the relationship of people, livestock and desertification is yet to be invented. 26 Technology studying the relationship of people, livestock and desertification is yet to be invented. - TRUE - FALSE - NOT GIVEN **答案**：FALSE 原文定位：Satellites have been put into use to study the impact of people and livestock on earth --- 以上内容由鸭圈雅思真题库（www.yaquan.site）提供，收录近期雅思考试真题回忆，支持在线机考模式免费练习。