1. 阅读理解

    Can trees 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 (柳树) attacked in the woods by caterpillars (毛毛虫) changed the chemistry of its leaves and made them tasteless so that the caterpillars got tired of the leaves and stopped eating them. And the tree sent out a special vapor—a signal causing its neighbors to change the chemistry of their own leaves and make themselves taste also terrible too.

    Talking, of course, doesn't need to be always in words. We can talk to each other by smiling, raising our shoulders and moving our hands. We know that birds 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 messages?

1. （1） From the passage, which kind of leaves don't caterpillars eat?

   A . Leaves lying on the ground. B . Leaves having an unpleasant taste. C . Leaves bees don't like. D . Leaves having an unfamiliar shape.
3. （2） The willow tree described in the passage protected itself by __________.

   A . growing more branches B . talking with birds and bees C . changing the chemistry of its leaves D . shaking caterpillars off
5. （3） According to the passage, the willow tree was able to talk with other trees by __________.

   A . waving its branches B . giving off a special vapor C . dropping its leaves D . changing the colour of its trunk
7. （4） According to the passage, bees talk by __________.

   A . making special movements B . touching one another C . smelling one another D . making unusual sounds
9. （5） What does the author think about the idea that trees can talk?

   A . It is not true at all. B . Only a few people believe it. C . The scientists made some mistakes. D . It seems very reasonable.