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>> 成人高等教育 / 材料科学基础
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佳题速递：
25、Can trees talk? Yes, but not in words. Scientists have reason to believe that trees do communicate with each other. Not long ago, researchers learned some surprising things. First a willow tree attacked in the woods by caterpillars (毛虫) changed the chemistry of its leaves and made them taste so terrible that they got tired of the leaves and stopped eating them. Then even more astonishing, the tree sent out a special smell--a signal causing its neighbors to change the chemistry of their own leaves and make them less tasty.
Communication, of course, doesn't need to be in words. We can talk to each other by smiling, raising our shoulders and moving our hands. We know that birds and animals use a whole vocabulary of songs, sounds, and movements. Bees dance their signals, flying in certain patterns that tell other bees where to find nectar (花蜜) for honey. So why shouldn't trees have ways of sending message?统考英语阅读理解 68、计算机病毒不可能使得_______。
A.计算机无法启动
B.操作员感染病毒
C.某些数据丢失
D.U盘无法打开计算机统考 新中国成立以来我们在社会主义建设中所经历的曲折和失误，归根结底，就在于没有完全搞清楚（ ） A、 阶级斗争和经济建设的关系 B、 计划和市场的关系 C、 什么是社会主义，怎样建设社会主义 D、 解放和发展生产力的关系中国特色社会主义理论 He goes to work _ _ _ _ _ _ foot but comes back home _ _ _ _ _ taxi.A、by, byB、on, byC、by, on英语Ⅰ 语音中的“韵母”与韵文中的“韵”的概念是相同的。 A、正确 B、错误现代汉语 不含味蕾的舌乳头是 A、 轮廓乳头 B、 叶状乳头 C、 丝状乳头 D、 菌状乳头人体解剖与生理学