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 vapor-a signal causing its neighbors 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.When attacked, a window tree will protect itself by ________.

A. changing its leaves’ chemistry B. changing its leaves’ colour

C. talking to caterpillars D. sending out a special vapour

2.From the passage we know that caterpillars _________.

A. like willow trees B. enjoy eating fallen leaves

C. feed on willow tree leaves D. could communicate with willow trees

3.Caterpillars will stop eating willow trees leaves which   __________   .

A. have a chemical change and become tasteless B. have a pleasant taste

C. are being attacked D. are communicating

4.According to the passage, how do willow trees communicate with each other ?

A. They talk in words. B. They send out a special vapour.

C. They wave their leaves. D. they make special sounds.

根据短文填空

China, which takes pride in four inventions in ancient times, has once again shown its ability to change the world with its “new four great inventions”the four new ways of life are the most popular among young foreigners who study and work in China .

electronic payment

“My wallet is no longer in use .I can buy and eat whatever I want with a tap of fingertip on my phone ,” said Li jinlong , a student from Cambodia (柬埔寨) in China .”Even pancake sellers are using Alipay mobile payment .

online shopping

“I can order food online at home .This is super convenient .If I am at home in Cambodia , I have to go outside.” China is innovating(创新) and no longer copying Western ideas .China has the largest mobile phone use in the world .This makes online shopping much easier .

shared bicycles

Shared bikes bring cycling back to people’s lives and make public transport more popular The bikes themselves aren’t new ,but China has made the world surprised with the operating model(运营模式) of bike -sharing .

high-speed railways

Lin talked about his experience of travelling by Chinese high-speed train from Beijing to Tianjing .The journey takes only half an hour , while in Cambodia , which has only two railways , such a journey may take up to three hours .

1.Now in China , Lin Jinlong doesn’t use his ________________any more .He can buy and eat whatever he wants with a ________________________on his phone .

2.Lin thinks ________________________at home is super convenient .Chinese people can shop online much ______________because China has the largest mobile phone use in the world .

3.Cycling _____________________to people’s lives by shared bikes , and China’s operating model of bike-sharing has ___________________the world .

4.It takes Lin only half an hour to travel from __________________by Chinese high-speed train while such a journey in Cambodia may take ____________________more than it does in China .

5.This article mainly talks about China’s _______and Chinese people’s _______________has been greatly improved because of them .

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