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what/why/how持续解决托福阅读难题

2017-03-28 12:09:39来源：新东方 张新振

　　为了帮助大家高效备考托福，熟悉托福阅读难题方法，新东方在线托福网为大家带来what/why/how持续解决托福阅读难题一文，希望对大家托福备考有所帮助。更多精彩尽请关注新东方在线托福网（http://toefl.koolearn.com/ ） !

　　蒸汽动力的发展;What? Why?How? 蒸汽动力怎么发展?发展之前是怎样的?为什么发展? 发展成什么样?

　　Paragraph1.

　　S1: By the eighteenth century, Britain was experiencing a severe shortage of energy.

　　S2: Because of the growth of population, most of the great forests of medieval Britain had long ago been replaced by fields of grain and hay.

　　S3: Wood was in ever-shorter supply, yet it remained tremendously important.

　　S4: It served as the primary source of heat for all homes and industries and as a basic raw material.

　　S5: Processed wood (charcoal) was the fuel that was mixed with iron ore in the blast furnace to produce pig iron (raw iron).

　　S6: The iron industry’s appetite for wood was enormous, and by 1740 the British iron industry was stagnating.

　　S7: Vast forests enabled Russia to become the world’s leading producer of iron, much of which was exported to Britain.

　　S8: But Russia’s potential for growth was limited too, and in a few decades Russia would reach the barrier of inadequate energy that was already holding England back.

what/why/how持续解决托福阅读难题

　　Paragraph2.

　　S1: As this early energy crisis grew worse, Britain looked toward its abundant and widely scattered reserves of coal as an alternative to its vanishing wood.

　　S2—S5: Coal was first used in Britain in the late Middle Ages as a source of heat. By 1640 most homes in London were heated with it, and it also provided heat for making beer, glass, soap, and other products. Coal was not used, however, to produce mechanical energy or to power machinery. It was there that coal’s potential was enormous.

what/why/how持续解决托福阅读难题

　　Paragraph3.

　　S1: As more coal was produced, mines were dug deeper and deeper and were constantly filling with water.

　　S2: Mechanical pumps, usually powered by hundreds of horses waling in circles at the surface, had to be installed. Such power was expensive and bothersome.

　　S3—S5: In an attempt to overcome these disadvantages, Thomas Savery in 1698 and Thomas Newcomen in 1705 invented the first primitive steam engines. Both engines were extremely inefficient. Both burned coal to produce steam, which was then used to operate a pump.

　　S6: However, by the early 1770s, many of the Savery engines and hundreds of the Newcomen engines were operating successfully, though inefficiently, in English and Scottish mines.

what/why/how持续解决托福阅读难题

　　阅读原则回顾

　　阅读应该分成两个阶段：

　　1. 积累词汇的阶段;2.了解篇章结构的阶段。

　　what?

　　Positive reading：信息检索式阅读;

　　why?

　　解决两大难题：

　　读不懂。读不快

　　how?

　　1.猜;2.验证 3.修改

　　一句话总结：为了回答问题而读是被动阅读;能够提出问题，才是主动阅读

　　以上就是新东方在线托福网为你带来的what/why/how持续解决托福阅读难题，更多精彩敬请关注新东方在线托福网（http://toefl.koolearn.com/ ）。

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