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新托福阅读词汇150题(81)：scores&Turbulent

2015-08-14 10:43:08来源：网络

　　【新托福阅读词汇150题(81)：scores&Turbulent】新托福TPO阅读中，词汇题是重要托福阅读题型。托福阅读词汇题做题需要考生掌握一定的词汇量和做题技巧。本文中新东方在线托福网汇总了新托福阅读词汇150题：scores&Turbulent。

　　Paragraph 4: The time had come to formulate a hypothesis. The investigators theorized that about 20 million years ago, the Mediterranean was a broad seaway linked to the Atlantic by two narrow straits. Crustal movements closed the straits, and the landlocked Mediterranean began to evaporate. Increasing salinity caused by the evaporation resulted in the extermination of scores of invertebrate species. Only a few organisms especially tolerant of very salty conditions remained. As evaporation continued, the remaining brine (salt water) became so dense that the calcium sulfate of the hard layer was precipitated. In the central deeper part of the basin, the last of the brine evaporated to precipitate more soluble sodium chloride (salt). Later, under the weight of overlying sediments, this salt flowed plastically upward to form salt domes. Before this happened, however, the Mediterranean was a vast desert 3,000 meters deep. Then, about 5.5 million years ago came the deluge. As a result of crustal adjustments and faulting, the Strait of Gibraltar, where the Mediterranean now connects to the Atlantic, opened, and water cascaded spectacularly back into the Mediterranean. Turbulent waters tore into the hardened salt flats, broke them up, and ground them into the pebbles observed in the first sample taken by the Challenger. As the basin was refilled, normal marine organisms returned. Soon layer of oceanic ooze began to accumulate above the old hard layer. 【TPO7- The Geologic History of the Mediterranean】

　　8. The word “scores” in the passage is closest in meaning to

　　○members

　　○large numbers

　　○populations

　　○different type

　　11. The word “Turbulent” in the passage is closest in meaning to

　　○Fresh

　　○Deep

　　○Violent

　　○Temperate

　　答案见下一页：

本文关键字: 新托福阅读 托福阅读词汇 托福词汇

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