這種題型也是托福的經(jīng)典題型之一，要注意把握幾種技巧，今天介紹其中一種技巧，叫做巧用代詞
Extinct but already fully marine cetaceans are known from the fossil record. █How was the gap between a walking mammal and a swimming whale bridged? Missing until recently were fossils clearly intermediate, or transitional, between land mammals and cetaceans. █Very exciting discoveries have finally allowed scientists to reconstruct the most likely origins of cetaceans. █In 1979, a term looking for fossils in northern Pakistan found what proved to be the oldest fossil whale.
This is a question that has puzzled scientists for ages.
這道題利用This代詞，然后直接插入第2個空們因為明顯第2句話就是question，而代詞This只能就近指代。
Since 1980, the use of wind to produce electricity has been growing rapidly. █In 1994 there were nearly 20,000 wind turbines worldwide, most grouped in clusters called wind farms that collectively produced 3,000 megawatts of electricity. █Most were in Denmark (which got 3 percent of its electricity from wind turbines) and California (where 17,000 machines produced 1 percent of the state’s electricity, enough to meet the residential needs of a city as large as San Francisco). █In principle, all the power needs of the United States could be provided by exploiting the wind potential of just three states—North Dakota, South Dakota, and Texas.
Some companies in the power industry are aware of this wider possibility and are planning sizable wind-farm projects in states other than California.
這道題也是利用This后的wider possibility來嘗試解決，結(jié)果發(fā)現(xiàn)沒有直接的對應(yīng)詞，但是發(fā)現(xiàn)每句話的動詞使用上有差別，只有最后一句話用了could，其他都是完成式+過去式，說明這件事已經(jīng)完成了，而只有最后一句話的could能夠表示一種愿景和可能，所以插入空為D
█Exhibitors, however, wanted to maximize their profits, which they could do more readily by projecting a handful of films to hundreds of customers at a time (rather than one at a time) and by charging 25 to 50 cents admission. █About a year after the opening of the first Kinetoscope parlor in 1894, showmen such as Louis and Auguste Lumière, Thomas Armat and Charles Francis Jenkins, and Orville and Woodville Latham (with the assistance of Edison’s former assistant, William Dickson) perfected projection devices. █These early projection devices were used in vaudeville theaters, legitimate theaters, local town halls, makeshift storefront theaters, fairgrounds, and amusement parks to show films to a mass audience.
When this widespread use of projection technology began to hurt his Kinetoscope business, Edison acquired a projector developed by Armat and introduced it as “Edison’s latest marvel, the Vitascope.”
這道題仍然利用this后面的指代詞widespread use of projection technology，那所對應(yīng)的信息點必須是廣泛的技術(shù)使用，發(fā)現(xiàn)只有最后一句話有這么表述，所以答案選D
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