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(虫荧光素酶), which is what makes fireflies(萤火虫) 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(毛虫) 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!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 |
What does the underlined word “they” in Paragraph 1 mean?
| A． Gardeners | B． Plants |
| C． Scientists | D． Fireflies |
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. |
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 |
Autumn blues? Let the sunshine in falling leaves, flowers, and cold winds. For many people late autumn can be a season of depression.
Those who suffer from “the autumn blue” are often extremely tired, lack energy, need more sleep, feel increased appetite and gain weight. “The exact cause of this condition, often called seasonal depression or seasonal affective disorder（SAD）, is not known yet,” says Chen Jue, associate professor at Shanghai Mental Health Center. “But recent studies indicate that weather change is influential and strongly suggest that this condition is caused by changes in the availability（得到）of sunlight.”
One theory is that with decreased exposure to sunlight, the biological clock that regulates mood, sleep, and hormones is delayed, running more slowly in winter. Exposure to light may reset the biological clock. Another theory is that brain chemicals that transmit information between nerves, called neurotransmitters （for example, serotonin）, may be altered in individuals with SAD. It is believed that exposure to light can correct these imbalances. “It is a sad season, but you can try to make it happy. Remember, spring always lives in your heart ,” Chen says. “Going outdoors to get some sunlight may reduce the tension that brings you the low spirits. Relax at work. Stretch, breathe deeply. Take a tea break. Think of your next vacation. Color treatment also works in handling low mood. Music also plays a role in treating autumn blues.”Autumn blues is also called autumn _______.
| A．depression | B．sunshine | C．blue music | D．cold winds |
From the 3rd paragraph we know that there ________ that can help to deal with autumn blues.
| A．is no biological clock | B．is a real example |
| C．is no possibility | D．are some ways |
Which of the following is true according to the text?
| A．Autumn blues can be feelings of happiness. |
| B．The real cause for autumn blues is still unknown. |
| C．People feel tired in autumn. |
| D．Weather doesn’t change people. |
Which of the following CAN’T you do in order to deal with autumn blues?
| A．Eat more food very low in calories and sugar. |
| B．Reset the biological clock regulating mood, sleep and hormones. |
| C．Keep the balance of nerves that transmit information. |
| D．Take outdoor activities or sports. |
At first sight, you would think the collection of hundreds of colored shards（碎片）could be a work of abstract art. But the objects are the contents of the stomach of a sea turtle that lost its battle with plastic pollution.
Environmentalists examined the stomach of the turtle found off the coast of Argentina. What they found is the symptom of the increasing threat to sea turtles from a human addiction to plastic.
Sea turtles often mistake plastic items for jellyfish or other food. Ingesting（摄取）ocean pollution can cause a digestive blockage and internal cuts. The result can be dangerous, followed by death.
Humans produce 260 million tons of plastic a year. When those products are pulled into the sea’s currents, the plastics are just broken into smaller pieces which are consumed by marine life at the bottom of the food chain. An examination of a green turtle found off Florida discovered that, over the course of a month, the animal’s faeces（粪便）had contained 74 foreign objects, including “four types of balloons, different types of hard plastic, a piece of carpet--like material and two 2--4 mm tar balls.”
“The oceans have become a giant refuse bin for all manner of plastics. All sea turtle species may be seriously harmed, “according to the biologists Colette Wabnitz, from the University of British Columbia. ”The symptom of this growing crisis can be seen inside and on sea turtles as well as their oceanic and terrestrial habitats. It is urgently necessary to directly confront the source of plastic pollution, redesign packaging and rethink the very idea of ‘throwaway culture’.”
Almost all marine species, from plankton to whales, have ingested plastic. But, even in small quantities, plastic can kill sea turtles, the biologists said.
Fifty out of 92 turtles found dead, stranded on the shorelines of Rio Grande do Sul state in Brazil, had ingested a “considerable amount of man-made debris”.What’s tile passage mainly about?
| A．How to prevent the sea turtle from plastic. |
| B．Why plastic is dangerous to the sea turtle. |
| C．Protecting the sea turtle from being polluted. |
| D．Sea turtles suffering from plastic pollution. |
The author mentions the “throwaway culture” probably in a（n） _________ tone.
| A．praising | B．positive | C．ironic | D．comedic |
The underlined word in the last paragraph probably means _________.
| A．a kind of food | B．a kind of fish |
| C．pieces of cloth | D．pieces of rubbish |
The paragraph following the last one will probably talk about ________.
| A．the way the biologists examined the sea turtle |
| B．some tips on how to make sea turtles avoid plastic |
| C．how to prevent plastic pollution |
| D．the reason why we should protect the sea turtle |
Fucheng Garden Villas is situated along the North 4 th Ring Road , just 2 kilometres east away from the Asian Games Village with easy traffic connection. It is 5 kilometres from the Beijing Lufthansa Centre.
Fucheng Garden Villas occupies an area of 34.7 hectares, over 80% of which is covered by trees and green, just like a garden in the city.
All the 108 villas were designed by American Company IDI, in American style, luxurious besides comfortable.
All materials of the construction and decoration as well as equipment are famous American products.
From now to July 31st, preferential（优惠）prices for sale and rent are offered. You can move into Fucheng Garden Villas on signing an agreement.
Bank will provide a 50％ mortgage（抵押）for 5 years.
Overseas sales License: NO. 124.
Developer: Beijing Hongda Read Estate Co. Ltd.
60East, North 4th Ring Road, Chaoyang District, Beijing.
Tel:（8610）64967050 64967049
Fax:（8610）64933575
（From Wednesday, June 25, 1997 CHINA DAILY）The advertiser is _________.
| A．Fucheng Garden Villas |
| B．American Company--IDI |
| C．Beijing Hongda Road Estate Co. Lid |
| D．The Beijing Luftthansa |
How many hectares is Fucheng Garden Villas covered by trees and greens?
| A．6.94 | B．More than 27.76 |
| C．27.76 | D．80% |
According to the advertisement, which of the following statements is NOT true?
| A．From June 25 to July 31, 1997, you can buy or rent the Fucheng Garden Villas with a low price. |
| B．You can’t move into Fucheng Garden Villas before signing agreement |
| C．If you haven’t got enough money at the moment, you can’t buy the Villas |
| D．Not only equipment but also all materials of the construction and the decoration are made in America |
The wedding took place in a Birmingham hotel. The bride and her father arrived in a new black American sports car. Her father looked nervous and uncomfortable in front of the cameras. The bride wore a silk wedding dress. She smiled nervously at the waiting photographers and went to a room on the first floor where she met her future husband for the very first time.
Carla Germaine and Greg Cordell were the winners of a radio station’s competition. The aim of the competition was to find two strangers prepared to marry without having met each other. Miss Germaine, 23, is a model. Mr. Cordell, 27, is a TV salesman. They were among the two hundred people who entered for a particular “experiment” organized by BMRB radio in Birmingham, England. Greg and Carla were among eight finalists who were interviewed live on radio. They took a lie detector （测谎仪）test and the station also spoke to their friends and family about their personalities. The competition judges included an astrologer（占卜家）who declared that they were suited.
The couple celebrated their wedding with a wedding breakfast and a party for 100 guests in the evening, but not everyone shared their joy. Miss Germaine’s mother looked anxious through-out the wedding and Mr. Cordell’s parents are reported to be less than delighted.
Organizations, including the marriage guidance service Relate, have criticized the marriage. As one expert put it, “we have enough problems getting young people to take marriage seriously. Marriage should always be about love.”
The couples are now on a Caribbean honeymoon followed by journalists. Their other prizes include a year’s free use of a wonderful apartment in the centre of Birmingham, and a car. But will it last?How did the couple’s parents react to the wedding?
| A．The bride’s mother shared their joy. |
| B．The bridegroom’s parents were not that joyful. |
| C．The bridegroom’s parents were quite delighted. |
| D．The bride’s father felt uncomfortable about the wedding. |
Some experts believe that ________.
| A．marriage without the couple’s meeting each other first ends up in divorce. |
| B．most young people take marriage seriously except this couple. |
| C．taking a lie detector test can not solve all the marriage problems. |
| D．young people nowadays are too careless about marriage. |
One of the prizes for the couple is ________.
| A．to use an apartment free for some time. |
| B．to spend their honeymoon wherever they like. |
| C．to have a wedding dress free. |
| D．to own an American sports car. |
Which of the following is the best title of the passage?
| A．A Wedding Based on love. | B．Two Strangers and a Wedding. |
| C．A Short--lived Marriage. | D．A Well--Matched Couple. |
One day I heard that one of my dear friends had lost his mother. This made me sad, for my friend was very close to his mother. He had been by her side as she traveled through her long and hard journey with cancer. At this time, many memories about my loved ones that had passed away came back to me. Finally these memories passed, but it was really sad to think that my friend would have to go through the pain. Three times I tried to write an email to my friend and three times words failed me. I am not the one that is often lost for words and I decided to have a sleep. Upon waking up，I could hardly wait for my computer to work；the words I needed were there. I was still left with a heavy heart although I had sent the email. They say that everything in this universe is balanced (平衡的) and indeed it is.
Three days later, I received his reply letter. I was happy to hear that he’d been admitted (被录取) to Cambridge University. It served as a gentle reminder for me that my friend would be okay and that life would go on. Everything in life is balanced；the lowest feelings change places with the highest feelings. Without the lows, we would never appreciate the highs. No matter how dark the clouds seem to be, sunshine is always there and you just wait for the opportunity to shine through.After the author learnt her friend had lost his mother, she ______.
| A．gave him some money |
| B．wrote an email to him |
| C．went to visit him |
| D．went on a journey with him |
What good news did the author’s friend receive?
| A．He received the author’s email. |
| B．He was told that life would go on. |
| C．He would go to Cambridge University. |
| D．His life would go back to normal again. |
Which of the following is TRUE according to the passage?
| A．The author wrote four emails to her friend. |
| B．The mother of the author’s friend died of cancer. |
| C．The author’s friend is a teacher in Cambridge University. |
| D．The author became relaxed after sending the email. |
From the passage, we can learn that the author is ______.
| A．sincere and warm-hearted | B．proud and confident |
| C．serious and friendly | D．funny and responsible |
The author aims to tell us that ______.
| A．life is fair to everybody |
| B．time waits for no man |
| C．everyone has good and bad times in life |
| D．on sunny days it doesn’t often rain |
粤公网安备 44130202000953号