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托福阅读词汇题：bulk&strength

2015-08-25 10:39:08来源：网络

　　【托福阅读词汇题：bulk&strength】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：bulk&strength。

　　Paragraph 3: Leatherbacks keep their body heat in three different ways. The first, and simplest, is size. The bigger the animal is, the lower its surface-to-volume ratio; for every ounce of body mass, there is proportionately less surface through which heat can escape. An adult leatherback is twice the size of the biggest cheloniid sea turtles and will therefore take longer to cool off. Maintaining a high body temperature through sheer bulk is called gigantothermy. It works for elephants, for whales, and, perhaps, it worked for many of the larger dinosaurs. It apparently works, in a smaller way, for some other sea turtles. Large loggerhead and green turtles can maintain their body temperature at a degree or two above that of the surrounding water, and gigantothermy is probably the way they do it. Muscular activity helps, too, and an actively swimming green turtle may be 7°C (12.6°F) warmer than the waters it swims through. 【TPO15- A Warm-Blooded Turtle】

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

　　○strength

　　○effort

　　○activity

　　○mass

　　答案见下一页：

本文关键字: 新托福阅读 托福阅读词汇 托福词汇题

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