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新托福阅读词汇150题(60)：excavating&consumed

2015-08-12 11:22:17来源：网络

　　【新托福阅读词汇150题(60)：excavating&consumed】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：excavating&consumed。

　　Paragraph 4: This impact released an enormous amount of energy, excavating a crater about twice as large as the lunar crater Tycho. The explosion lifted about 100 trillion tons of dust into the atmosphere, as can be determined by measuring the thickness of the sediment layer formed when this dust settled to the surface. Such a quantity of material would have blocked the sunlight completely from reaching the surface, plunging Earth into a period of cold and darkness that lasted at least several months. The explosion is also calculated to have produced vast quantities of nitric acid and melted rock that sprayed out over much of Earth, starting widespread fires that must have consumed most terrestrial forests and grassland. Presumably, those environmental disasters could have been responsible for the mass extinction, including the death of the dinosaurs. 【Official Model Exam- Meteorite Impact and Dinosaur Extinction】

　　5. The word “excavating” in the passage is closest in the meaning to

　　○ digging out

　　○ extending

　　○ destroying

　　○ covering up

　　6. The word “consumed” in the passage is closest in the meaning to

　　○ changed

　　○ exposed

　　○ destroyed

　　○ covered

　　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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