46 Can Trees Talk？
Can tree talk Yes—but not in words. Scientists have reasons 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 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 v a p o u r一a signal causing its neighbor u r s 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 for honey．So why shouldn't trees have ways of sending messages？
树会说话吗？
树会说话吗？是的—但不是用语言。科学家有理由相信树木可以互相交流。不久以前，研究者了解到一些令人惊奇的事。首先是森林里一棵遭受虫害的柳树改变了它的叶子的化学成分，使其味道极差，虫子再也不吃这种叶子。更加令人惊奇的是，这种树放出一种特殊的烟雾——一个信号，这种信号能让它的邻居改变自己的叶子的化学成分，并且令它们的味道差一些。
交流当然不必非得用语言。我们可以通过微笑，耸肩和摆手来交流。我们知道鸟儿和动物运用所有的鸣叫，声音和动作来作为词汇。蜜蜂用舞蹈表达信息，利用某种飞翔姿势告诉其他蜜蜂那里可以找到花蜜。为什么树木就不能有发送消息的方式呢？
参考译文
词汇：
Communicate 交流 willow 柳树
Caterpillar 毛虫 v a p o u r 烟雾
Tasty 美味的 shoulder 肩膀
Nectar 花蜜
I．听全文录音，选择正确答案
1 ．We can learn from the passage that ．
A .maybe trees can communicate with each other in certain ways
B .willow trees often send out a special v a p o u r
C .caterpillars don’t like willow tree leaves
D .trees can talk in words
2 ．In the writer’s opinion， ．
A ．a bee’s dance is n’t a kind of communication
munication needs to be in words
C .only human beings can communicate with each other by some actions
D ．a bird’s sound is a way of sending messages
3. Which is the writer's answer to the question "Do trees have ways
of sending messages？”
A. Yes, they do. B．No, they don't
C. Not sure. D. Not mentioned.
II．听录音，补全下列段落
Communication, of course, does n’t need to be in 1 ．We ca talk to each other by 2 , raising our shoulders and moving our 3 ．We know that birds and animals use a whole 4 of songs， sounds and 5 ．Bees dance their 6 ，flying in certain 7 that tell other bees where to find nectar for 8 ．So why should n’t trees have 9 of sending 10 ？
答案:
I．1 ．A 2. D 3．A
II．1．words 2. smiling 3. hands 4. vocabulary 5. movements
6. signals 7.patterns 8.honey 9.ways 10.messages
