我的暑假第十九天： (3) 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 taste so terrible that the caterpillars got tired of the leaves and stopped eating them. The even more astonishing, the tree sent out a special vapour — a signal causing its neighbours to change the chemistry of their own leaves and make them less tasty. Communication, 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 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 messages?1. From the passage we know that caterpillars _______. A. like willow trees B. enjoy eating fallen leavesC. can talk to other caterpillarsD. can send out a special vapour2. Caterpillars will stop eating willow tree leaves which _______. A. have a chemical change and become tasteless B. have a pleasant tasteC. are being attacked D. are communicating3. According to the passage, bees communicate with each other by _______. A. talking B. making unusual sounds C. singing songs D. flying certain patterns (4)Do you know Australia? Australia is the largest island in the world. It is a little smaller than China. It is in the south of the earth. Australia is big, but its population is not large. The population of Australia is ...
