Many gardeners believe that “talking” to their plants helps them grow---it turns out that they may not be crazy after all. According to the scientists from the University of Exeter, plants may keep communicating with each other through a secret “unseen” language.

For their experiment, the scientists picked a cabbage plant that is known to send out a gas when its surface is cut. In order to get video evidence of the communication, they changed the cabbage gene by adding the protein---luciderase(蟲熒光素酶), which is what makes fireflies(螢火蟲) glow in the dark.

When the changed cabbage plant was in full bloom, they cut a leaf off with a pair of scissors, and almost immediately, thanks to the luciderase, they could see the plant sending out “methyl jasmonate(茉莉酸甲酯)”.

While this was a known fact, what was surprising was the fact that the minute this gas began to give out, the nearby cabbage plants seemed to sense some kind of danger and started to send out a gas that they normally have to keep predators(捕食者) like caterpillars(毛蟲) away.

What the scientists are not sure is whether the plants are trying to warn the other leaves or the near plants about the danger---something that will require further research However, the team, which is led by Professor Nick Smirnoff, is quite excited about the findings because this is the first time it has been proved that plants do not live a passive life, but actually move, sense and even communicate with each other.

However, before you get all concerned, they are quite sure that plants do not feel the pain when they are cut, since they do not have nerves---so go ahead and bite into that juicy carrot!

1.What’s the best title of the passage?

A. Plants Can Send Some Gas

B. Plants Can Communicate with Each Other

C. The “Unseen” Language of Plants

D. Plants Can’t Feel Pain

2. What does the underlined word “they” in Paragraph 1 mean?

A. Gardeners B. Plants

C. Scientists D. Fireflies

3.When the plant sent out methyl jasmonate, which of the following statements is NOT TRUE?

A. The nearby cabbage plants seemed to sense some kind of danger.

B. The nearby cabbage plants started to send out a gas.

C. The nearby cabbage plants tried to warn the near plants.

D. The nearby cabbage plants communicated through a secret language.

4.According to the experiment, plants ________________.

A. don’t live a passive life

B. can feel pain when they are cut

C. can warn the other leaves about danger

D. can talk with each other

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Let's do some sleep math. You lost two hours of sleep every night last week because of a big project due on Friday. On Saturday and Sunday, you slept in, getting four extra hours. On Monday morning, you were feeling so bright-eyed, and you only had one cup of coffee, instead of your usual two. But don't be cheated by your energy: You’re still carrying around a heavy load of sleepiness, or what experts call “sleep debt”.

Sleep debt is the difference between the amount of sleep you should get and the amount you actually get. It’s a deficit that grows every time we remove some minutes off our nightly sleep. “People get more and more sleep debt without noticing it,” says William Dement, founder of the Stanford University Sleep Research Centre. Studies show that such short-term lack of sleep leads to a foggy brain, worsened eyesight, and trouble remembering. Long-term effects include obesity, and heart disease. A survey reports that we’re losing one hour of sleep each night—more than two full weeks of sleep each year.

The good news is that, like all debts, sleep debt can be paid off with some work. Adding an extra hour or two of sleep a night is the way to catch up. For the long-term lack of sleep, take it easy for a few months to get back into a natural sleep pattern(模式). Go to bed when you are tired, and allow your body to wake you in the morning naturally (no alarm clock allowed).

As you pay off sleep debt, your body will come to a rest at a sleep pattern that is particularly right for you. Sleep researchers believe that although the exact genes (基因) remain to be discovered, genes do determine our individual sleep patterns. That probably means you can’t train yourself to be a “short sleeper” and you’re fooling yourself if you think you’ve done it, so earn back that lost sleep and follow the orders of your inner sleep needs. When you put away sleep debt, you become a superman.

1.The example of sleep math is used to show___________.

A. how you build up your sleep debt

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C. why you need enough sleep every night

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C. deep sleep D. lack of sleep

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A. failing eyesight B. poor memory

C. weak heart D. weight loss

4.It’s impossible to train oneself to be a “short sleeper” because _________.

A. one can only get their energy during long sleep

B. how one sleeps is determined when they were born

C. one will feel tired if their sleep is less than needed

D. one sleeps more when developing a natural sleep pattern

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The mayor was charged with _______ his power for personal benefits.

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Taj Mahal, Agra, India

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Panama Canal, Panama

More than 4. 5 million cubic yards of concrete were used in the construction of this canal’s locks and dams. The Panama Canal is a 47-mile long waterway that connects the Atlantic and Pacific Oceans. The earth and rubble dug to make way for it was enough to bury Manhattan to a depth of four meters. A series of locks allows ships to pass through the water. Each lock door weighs 750 tons and each lock fills with 52 million gallons of water to accommodate the 15,000 ships that use the canal every year.

Grand Canyon Skywalk, Arizona

The Skywalk’s foundation is strong enough to support 71 million pounds , Located 1,219 meters above the Colorado River, the Grand Canyon's Sky Walk consists of one million pounds of steel and 83,000 pounds of glass. It was the creation of Las Vegas businessman David Jin, who approached the Hualapai Tribe with the idea of a glass walkway over the Grand Canyon in 1996. The Sky walk was assembled on site.

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七選五閱讀

根據(jù)短文內(nèi)容，從短文后的選項(xiàng)中選出能填入空白處的最佳選項(xiàng)，并在答題卡上將該選項(xiàng)的標(biāo)號(hào)涂黑。有兩項(xiàng)多余。

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Every time I heard the other students talking and laughing, I felt my heart broken, I couldn’t talk with anyone about my problems. And I didn’t want my parents to worry about me.

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The moment their idol took the floor, the excited fans ________ thunderous applause.

A. ran into B. burst into

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完形填空,閱讀下面短文，從短文后各題所給的四個(gè)選項(xiàng)(A、B、C和D)中，選出可以填入空白處的最佳選項(xiàng)。

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1.A. Promised B. Amazed C. Determined D. Organized

2.A. need B. should C. must D. can

3.A. collection B. contribution C. shop D. club

4.A. seldom B. likely C. slightly D. merely

5.A. drew B. became C. went D. pulled

6.A. observed B. sensed C. watched D. noticed

7.A. study B. try C. listen D. work

8.A. disappointing B. surprising C. formal D. public

9.A. agreeable B. hopeful C. thankful D. pitiful

10.A. Moved B. Shocked C. Persuaded D. Demanded

11.A. one B. some C. two D. any

12.A. While B. As C. Because D. Though

13.A. express B. describe C. explain D. shake

14.A. returned B. delivered C. chose D. shared

15.A. sweet B. healthy C. happy D. fair

16.A. putting B. giving C. storing D. signing

17.A. present B. harvest C. winner D. chance

18.A. greeting B. praising C. sheltering D. rewarding

19.A. under B. before C. beyond D. within

20.A. process B. project C. struggle D. communication

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閱讀下面材料,在空白處填入恰當(dāng)?shù)膬?nèi)容(1個(gè)單詞)或括號(hào)內(nèi)單詞的正確形式。

Were you the first or the last child in your family? Or were you a middle or an only child? Some people think_1.__matters where you were born in your family. But there are different ideas about what birth order means. Some people say that oldest children, __2. are smart and strong-willed, are very likely_3.___(succeed). The reason 4. _this is simple. Parents have a lot of time for their first child and give him or her a lot of attention. An only child will succeed for_ 5. same reason.

What happens to the 6. _ children in the family? Middle children don’t get so much attention, so they don’t feel that important. If a family has many children, the middle one sometimes gets lost in the crowd. The youngest child, _ 7. _ , often gets special treatment. Often this child grows up to be funny. But a recent study saw things quite 8. _(difference). The study found that first children believed in family rules. They didn’t take many chances in_ 9. __lives. They usually 10._(follow) orders. Rules didn’t mean as much to later children in the family. They took chances and they often did better in life.

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