考前必看：2019年托福考试阅读长难句盘点5

在做阅读的过程中，我们最需要去解决的就是长难句，一般阅读题也都是在这种疑难句子里出，那么怎么才能攻克长难句呢？首先我们就是要会分析，多看例句，小编给大家整理了疑难句子汇总，在坦途网托福考试频道都可以看到，现在我们就先来看这一篇吧！

1. Some fossils endured through so many millions of years that they appear in many strata, but others occur only in a few strata, and a few species had their births and extinctions within one particular stratum.

2. This view is supported by a variety of factors that can create mismatches between very young children's encoding and older children's and adults' retrieval efforts.

3. Conversely，improved encoding of what they hear may help them better understand and remember stories and thus make the stories more useful for remembering future events.

4. Mineral deficiencies can often be detected by specific symptoms such as chlorosis (loss of chlorophyll resulting in yellow or white leaf issue), necrosis (isolated dead patches), anthocyanin formation (development of deep red pigmentation of leaves or stem), stunted growth, and development of woody tissue in an herbaceous plant.

5. Later Heyerdahl suggested that the Pacific was peopled by three migrations: by Native Americans from the Pacific Northwest of North America drifting to Hawaii, by Peruvians drifting to Easter Island, and by Melanesians.

6. Contrary to these theorists, the overwhelming evidence of physical anthropology, linguistics, and archaeology shows that the Pacific islanders came from Southeast Asia and were skilled enough as navigators to sail against the prevailing winds and currents.

7. The basic cultural requirements for the successful colonization of the Pacific islands include the appropriate boat-building, sailing, and navigation skills to get to the islands in the first place, domesticated plants and gardening skills suited to often marginal conditions, and a varied inventory of fishing implements and techniques.

8. It is now generally believed that these prerequisites originated with peoples speaking Austronesian languages (a group of several hundred related languages) and began to emerge in Southeast Asia by about 5000 B. C.E.

9. These expeditions were likely driven by population growth and political dynamics on the home islands, as well as the challenge and excitement of exploring unknown waters.

10. Because all Polynesians, Micronesians, and many Melanesians speak Austronesian languages and grow crops derived from Southeast Asia, all these peoples most certainly derived from that region and not the New World or elsewhere.

看过这篇文章有没有觉着这些句子会比一般的要难理解，这就是我们需要学习的地方，当我们把难得句子学会，自然其他的也不在话下了，在平时的复习中，要加强对自己的训练，越有难度越去挑战，这样我们才不断的突破自己，小编希望在托福考试成绩查询结果出来时，大家看到的都是自己想要的结果！