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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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"In America there are large ants which can eat whole trees bare as a broom handle in a single night,"she wrote in the description.
2018年12月六级真题(第二套)阅读 Section B
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As trees outgrow their ideal habitats in the face of climate change, these flying ecosystem engineers could be a big help in replanting trees.
2016年12月六级真题(第一套)阅读 Section A
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But for real trees, it's harder to uproot.
2016年12月六级真题(第一套)阅读 Section A
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During the trials, the robot algorithms (算法) and mechanics will be fine-tuned to make it better suited to ailing livestock and ensure it safely navigates around potential hazards including trees, mud, swamps, and hills.
2018年12月六级真题(第三套)阅读 Section C
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The leafy, spreading trees were planted on graves and as part of traditional rituals.
2017年12月六级真题(第一套)阅读 Section C
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When that happens, many trees like walnuts, oaks and pines, rely 30 exclusively on so-called "scatter-hoarders, " such as birds, to move their seeds to new localities.
2016年12月六级真题(第一套)阅读 Section A