精选400句托福阅读长难句(OG&TPO)十九
托福阅读备考中，一大难点知识就是文章的长难句，想要更好地攻克长难句，大家还是要多练习长难句的解答技巧。为大家总结了托福阅读官方指南和TPO中的长难句，供大家参考练习。
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181. Hulmut Buechner(1953), in reviewing the nature of biotic changes in Washington through recorded time, says that "since the early 1940s, the state has had more deer than at any other time in its history, the winter population fluctuating around approximately 320,000 deer (mule and black-tailed deer), which will yield about 65,000 of either sex and any age annually for an indefinite period."
182. In addition to finding an increase of suitable browse, like huckleberry and vine maple, Arthur Einarsen, longtime game biologist in the Pacific Northwest, found quality of browse in the open areas to be substantially more nutritive.
183. She rejected the technical virtuosity of movement in ballet, the most prestigious form of theatrical dance at that time, perhaps because her formal dance training was minimal.
184. Continued sedimentation—the process of deposits’ settling on the sea bottom—buries the organic matter and subjects it to higher temperatures and pressures, which convert the organic matter to oil and gas.
185. Spillage from huge oil-carrying cargo ships, called tankers, involved in collisions or accidental groundings (such as the one off Alaska in 1989) can create oil slicks at sea.
186. This “atmospheric engine,” invented by Thomas Savery and vastly improved by his partner, Thomas Newcomen, embodied revolutionary principles, but it was so slow and wasteful of fuel that it could not be employed outside the coal mines for which it had been designed.
187. In 1815 he published the first modern geological map “A Map of the Strata of England and Wales with a Part of Scotland”, a map so meticulously researched that it can still be used today.
188. Even without the problem of regional differences, rocks present a difficulty as unique time markers: Quartz is quartz—a silicon ion surrounded by four oxygen ion—there’s no difference at all between two-million-year-old Pleistocene quartz and Cambrian quartz created over 500 million years ago.
189. Limestone may be found in the Cambrian or 300 million years later in the Jurassic strata but a trilobite-the ubiquitous marine arthropod that had its birth in the Cambrian-will never be found in Jurassic strata, nor a dinosaur in the Cambrian.
190. While rock between two consistent strata might in one place be shale and in another sandstone, the fossils in that shale or sandstone were always the same.
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