Whenaleafyplantisunderattack，itdoesn’t sitquietly.Backi...

问题详情：

When a leafy plant is under attack ，it doesn’t  sit quietly. Back in 1983,two scientists,Jack Schultz and Ian Baldwin,reported that young maple trees getting bitten by insects send out a particular smell that neighboring plants can get. These chemicals come from the injured parts of the plant  and seem to be an the plants pump through the air is a mixture of chemicals known as volatile organic compounds,VOCs for short.

   Scientists have found that all kinds of plants give out VOCs when being attacked ’s a plant’s way of crying is anyone listening?Apuse we can watch the neighbours react.

   Some plants pump out smelly chemicals to keep insects others do double duty pump out perfumes designed to attract different insects who are natural enemies to the they arrive,the tables are turned attacker who are natural enemies to the attackers . zxx|k Once they arrive,the tables are attacker who was lunching now becomes lunch.

  In study after study,it appears that these chemical conversations help the neighbors damage is usually more serious on the first plant,but the neighbors ,relatively speaking ,stay safer because they heard the alarm and knew what to do.

Does this mean that plants talk to each other? Scientists don’t know. Maybe the first plant just made a cry of pain or was sending a message to its own branches, and so, in effect, was talking to itself. Perhaps the neighbors just happened to “overhear” the cry. So information was exchanged, but it wasn’t a true, intentional back and forth.          Charles Darwin, over 150 years ago, imagined a world far busier, noisier and more intimate(亲密的) than the world we can see and hear. Our senses are weak. There’s a whole lot going on.

32. What does a plant do when it is under attack? A. It makes noises.     B. It gets help from other plants. C. It stands quietly    D. It sends out certain chemicals. 33. What does the author mean by “the tables are turned” in paragraph 3? A. The attackers get attacked. B. The insects gather under the table. C. The plants get ready to fight back. D. The perfumes attract natural enemies.

ntists find from their studies that plants can           .

ict natural disasters  ect themselves against insects

to one another intentionally their neighbors when necessary

can we infer from the last paragraph?

word is changing faster than ever.

le have stronger senses than before

world is more complex than it seems

le in Darwin’s time were imaginative. 

【回答】

知识点：阅读理解

题型：阅读理解