2. 外语
  3. Can trees talk? Yes, but not in words. Scientists have reason to believe that trees do communicate with each other. Not long ago

Can trees talk? Yes, but not in words. Scientists have reason to believe that trees do communicate with each other. Not long ago

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问题     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 the caterpillars got tired of the leaves and stopped eating them. Then even more astonishing, the tree sent out a special smell—a signal causing its neighbours to change the chemistry of their own leaves and make them less tasty.
    Communication, of course, does not need to be in words. We can talk to each other by smiling, shrugging our shoulders or making gestures. 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 their own ways of sending message?
What is the main idea of the passage?
选项 A、Trees can communicate with each other in their own ways.
B、Birds can’t talk to each other.
C、Bees and trees are good friends.
D、A willow tree is attacked in the woods.
答案A
解析 主旨大意题。文章第一段介绍了树之间也可以进行交流，并且以柳树为例作了说明，第二段介绍了人、动物、昆虫，各自的交流方式，从侧面说明自然界的植物之间也可以交流，故全文重点讲述树之间的交流方式。
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