剑桥雅思最新真题题源详解——阅读（学术类） 免费 夸克云 mobi azw3 pdf 下载 chm snb

《剑桥雅思*真题题源详解:阅读(学术类)》收录了近2年重复率较高的真题源文，比如：美国肥胖、龙涎香、海獭、考拉、人类五种感觉、厄尔尼诺现象、计时器发展史、阅读的教学方法、机器人和海底热流排放等多篇文章。

部分 雅思阅读学术类真题题源10套

　TEST PAPER 1

　　PASSAGE 1 口译：同传和交传

　　PASSAGE 2 生物防治

　　PASSAGE 3阅读的教学方法

　TEST PAPER 2

　　PASSAGE 1 鲸鱼的文化和语言

　　PASSAGE 2 看电视上瘾

　　PASSAGE 3 恐惧研究

　TEST PAPER 3·

　　PASSAGE 1 机器人

　　PASSAGE 2城市规划

　　PASSAGE 3美国电影

　TEST PAPER 4

　　PASSAGE 1海底热流排放

　　PASSAGE 2 电击试验

　　PASSAGE 3 厄尔尼诺现象

　TEST PAPER 5

　　PASSAGE 1 未来汽车业

　　PASSAGE 2 幽默研究

　　PASSAGE 3 计时器发展史

　TEST PAPER 6

　　PASSAGE 1 英国天才工程师——伊萨姆巴德·金德姆·布鲁内尔

　　PASSAGE 2 水坝的灾难

　　PASSAGE 3 考拉(树袋熊)

　TEST PAPER 7

　　PASSAGE 1 美国肥胖

　　PASSAGE 2 玻璃研究

　　PASSAGE 3 学术腐败

　TEST PAPER 8

　　PASSAGE 1 选择和幸福

　　PASSAGE 2 鲸鱼的感觉

　　PASSAGE 3 语言学派

　TEST PAPER 9

　　PASSAGE 1 地图发展史

　　PASSAGE 2 仿生学研究

　　PASSAGE 3 人类五种感觉

　TEST PAPER 10

　　PASSAGE 1 海獭

　　PASSAGE 2 龙涎香

　　PASSAGE 3 社会学试验

第二部分 雅思阅读学术类2套模拟试题

　TEST 1

　TEST 2

第三部分 附录

附录1 2007年8月-2008年8月中国考区雅思考试阅读学术类文章汇总

附录2 单词总表

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C Classical biological control is the introduction of natural enemies to a new locale where they did not originate or do not occur naturally. This is usually done by government authorities. In many instances the complex of natural enemies associated with an insect pest may be inadequate. This is especially evident when an insect pest is accidentally introduced into a new geographic area without its associated natural enemies. These introduced pests are referred to as exotic pests and comprise about 40％ of the insect pests in the United States. Examples of introduced vegetable pests include the European corn borer, one of the most destructive insects in North America. To obtain the needed natural enemies, scientists turned to classical biological control. This is the practice of importing, and releasing for establishment, natural enemies to control an introduced （exotic） pest, although it is also practiced against native insect pests. The first step in the process is to determine the origin of the introduced pest and then collect appropriate natural enemies associated with the pest or closely related species. The natural enemy is then passed through a rigorous quarantine process, to ensure that no unwanted organisms （such as by per parasitoids） are introduced, then they are mass produced, and released. Follow-up studies are conducted to determine if the natural enemy becomes successfully established at the site of release, and to assess the long-term benefit of its presence.

　　D There are many examples of successful classical biological control programs. One of the earliest successes was with the cottony cushion scale, a pest that was devastating the California citrus industry in the late 1800s. A predatory insect, the Vidalia beetle, and a parasitoid fly were introduced from Australia. Within a few years the cottony cushion scale was comp

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《剑桥雅思最新真题题源详解:阅读(学术类)》收录了近2年重复率较高的真题源文，比如：美国肥胖、龙涎香、海獭、考拉、人类五种感觉、厄尔尼诺现象、计时器发展史、阅读的教学方法、机器人和海底热流排放等多篇文章。