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					That statement comes not, as you might imagine, from a stereotypical tree-hugging, save-the-world greenie ( ' ,  环保主义者), but from Gordon Brown, a politician with a reputation for rigour, thoroughness and above all, caution. 出自-2016年6月阅读原文
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					Devils Tower, the first national monument in America, could almost be mistaken for the stump of an enormous tree. 出自-2016年12月听力原文
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					dead leaves and tree debris make the same sound 出自-2013年6月阅读原文
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					Trees need more water as temperatures rise, but the prolonged droughts have robbed them of moisture, making whole forests easily cleared of trees and turned into farmland. 出自-2013年6月阅读原文
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					trees that are dying usually give out a soft moan 出自-2013年6月阅读原文
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					The butterflies are so numerous that they often cover the entire trees. 出自-2014年6月听力原文
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					When a tree first starts growing in a certain area, it's likely that the 27 climatic envelope—the temperature, humidity, rainfall patterns and so on—suits it. 2016年12月六级真题(第一套)阅读 Section A
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					In an 1801 drawing from his book, General Zoology Amphibia, George Shaw, an English botanist and zoologist, credited Merian for describing a frog in the account of her South American expedition, and named the young tree frog after her in his portrayal of  2018年12月六级真题(第二套)阅读 Section B
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					The tree people in the Lord of the rings—the Ents—can get around by walking. 2016年12月六级真题(第一套)阅读 Section A
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					While tasty, such seeds are delicate — they cannot bud and grow if they dry out as you may know if you've ever tried to grow a tree from an avocado pit. 2018年6月六级真题(第一套)阅读 Section B