Can trees talk? Yes, but not in words. Scientists have reason to believe that trees do communicate (交际) 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 (信号) 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?

1．It can be concluded from the passage that caterpillars do not feed on leaves that ______.

  A．are lying on the ground       B have an unpleasant taste

  C．bees don’t like              D have an unfamiliar shape

2．The willow tree described in the passage protected itself by ______.

A．changing its leaf chemistry      

B．communicating with birds and bees

C．growing more branches  

D．shaking caterpillars off

3．According to this passage, bees communicate by ______.

  A．touching one another           B．making special movement

  C．smelling one another            D．making unusual sound

4．The author believes that the incident described in the passage ______.

  A．cannot be taken seriously       B．should no longer be permitted

  C．seems completely reasonable    D．must be checked more thoroughly 

Can trees talk? Yes, but not in words. Scientists have reason to believe that trees do communicate (交际) 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 (信号) 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?

55．It can be concluded from the passage that caterpillars do not feed on leaves that ______.

  A．are lying on the ground       B have an unpleasant taste

  C．bees don’t like              D have an unfamiliar shape

56．The willow tree described in the passage protected itself by ______.

A．changing its leaf chemistry      

B．communicating with birds and bees

C．growing more branches   

D．shaking caterpillars off

57．According to this passage, bees communicate by ______.

  A．touching one another           B．making special movement

  C．smelling one another            D．making unusual sound

58．The author believes that the incident described in the passage ______.

  A．cannot be taken seriously       B．should no longer be permitted

  C．seems completely reasonable    D．must be checked more thoroughly 

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 vapor—a signal causing its neighbors 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 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?

1．It can be inferred from the passage that caterpillars do not feed on leaves that          .

A．have an unpleasant taste

B．are lying on the ground

C．have an unfamiliar shape

D．bees don’t like

2．According to the passage, the willow tree was able to communicate with each other by       .

A．waving its branches              B．giving off a special vapor

C．dropping its leaves               D．changing the color of its trunk

3．According to the passage, bees communicate by        .

A．touching one another             B．smiling one another

C．making special movement         D．making unusual sound

4．The author believes that the incident described in the passage         .

A．cannot be taken seriously          B．seems completely reasonable

C．should no longer be permitted      D．must be checked more thorough

Can trees talk? Yes, but not in words. Scientists have reason to believe that trees do communicate (交际) 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 (信号) 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?

1．It can be concluded from the passage that caterpillars do not feed on leaves that ______.

     A．are lying on the ground                   B．have an unpleasant taste

     C．bees don’t like                          D．have an unfamiliar shape

2．The willow tree described in the passage protected itself by ______.

     A．growing more branches                B．communicating with birds and bees

     C．changing its leaf chemistry                 D．shaking caterpillars off

3．According to the passage, the willow tree was able to communicate with other trees by ______.

     A．waving its branches                    B．giving off a special smell

     C．dropping its leaves                     D．changing the colour of its trunk

4．According to this passage, bees communicate by ______.

     A．making special movement                 B．touching one another

     C．smelling one another                   D．making unusual sound

5．The author believes that the incident described in the passage ______.

     A．cannot be taken seriously                B．should no longer be permitted

     C．must be checked more thoroughly       D．seems completely reasonable