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你能告诉我你的机器人中毒多久了吗?

Could you tell me ____________________________ the virus?

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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 special smell that neighboring plants can get. These chemicals come from the injured parts of the plant and seem to be a warning. What the plants pump through the air is a mixture of chemicals known as volatile organic compounds(VOCs).

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

Some plants pump out smelly chemicals to keep insects away. But others do double duty. They pump out perfumes to attract different insects who are their natural enemies. Once the insects arrive, the tables are turned. The attacker who was lunching now becomes lunch.

In study after study, it appears that these chemical conversations help the neighbors. The damage is usually more serious on the first plant, but the neighbors stay safer because they heard the warning 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 fact, was talking to itself. Perhaps the neighbors just happened to hear the cry by accident and so wrong information was exchanged.

Charles Darwin, over 150 years ago, imagined a world far busier, noisier and more intimate than the world we can see and hear, our senses are weak. There’s a whole lot going on.

1.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.

2.What does “the tables are turned” mean in Paragraph 3?

A.The attackers are attacked. B.The insects gather under the table.

C.The plants get ready to fight back. D.The perfumes attract natural enemies.

3.Scientists find from their studies that plants can__________.

A.talk to one another B.predict natural disasters

C.protect themselves against insects D.help their neighbors when necessary

4.What can we learn from the last paragraph?

A.The world is changing faster than ever. B.People have stronger senses than before.

C.The world is more colorful than it seems. D.People in Darwin’s time were full of imagination.

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Thanks to an online activity and a stranger with a strong sense of romance and a strong will, an old box full of 70-year-old love letters was returned to its very first owner.

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The Internet found Norma Beasley living in Lincoln, England. She was so surprised to find that her loved love letters still lived in the world, and that they were in the same old box.

The moment makes people smile and also full of tears, though. Norma says she hasn’t looked at the letters yet. Bob passed away late last year, and she is still not ready to face the letters alone.

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A.Norma Hall isn’t Kim Rowe’s grandmother.

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I got my ______ and took out my two-dollar bill. “Thanks, Mom. I am sure to make it,” I said out loud so that she could hear me.

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英语课上,同学们正在准备举行以“The Nicest Teacher in My Heart” 为主题的演讲活动。请你以李华的名义写一篇演讲词,在班上与同学分享。

提示:( l ) What does he / she look like?

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( 3 ) 词数80个左右(开头和结尾已给出,不计入总词数)。

参考词汇:upset, cheer up, with one’s help, improve

Hello, everyone!

Junior high school days will be over. I have some special memories. One of them is about a teacher. In my heart,____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

Thanks for your attention!

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