Children and teenagers who spend lots of time in front of screens---especially TVs---are easier to get more weight as they grow, according to a new study.
The findings agree with the research suggesting all that inactive sitting and always watching advertisements may lead to poor eating habits.
Researchers used results from a long-term study of children who took part in the surveys every two years. Children were between ages 9 and 16 when the study started. Out of 4,300 girls in the study, 17 percent were overweight or obese（肥胖的）. Twenty-four percent of the 3,500 boys were also above a healthy weight.
The surveys included questions about their height and weight as well as how much time they spent watching TV and DVDs and playing computer and video games.
From one survey to the next, each one-hour increase in children’s daily TV watching was in connection with an increase of about 0.1 points on a body mass index (BMI)（体质指数）, which measures weight in connection with height. There’s an increase of about half a pound in weight per extra hour of TV.
“The weight of the evidence is so strong that television watching is connected with unhealthy changes in weight among youth,” says Jennifer Falbe, who led the study while at the Harvard School of Public Health in Boston.
“It's important for parents to know that all the obesity-causing（引起肥胖的）screens really should be limited in their children's lives.” Falbe says. “When children watch TV, there are many food advertisements on TV that might lead them to eat a cookie or drink a soft drink.” What's more, she says, “they can get into a hibernating(冬眠) state on the sofa, even if children are sitting down while playing a computer game.”Which of the following statements can be the best title for the text?
| A．A new study on screens. |
| B．TVs do harm to children. |
| C．The less TV time, the fatter. |
| D．Too much screen time leads to obesity. |
How many children took part in the study?
| A．4,300 | B．3,500 |
| C．7,800 | D．9,800 |
According to the study, one extra hour screen time will cause children about ______ poundfatter.
| A．0.1 | B．0.5 |
| C．0.3 | D．0.7 |
According to Falbe , what should parents do to stop children getting fat?
| A．Limiting the time of children watching TV. |
| B．Buying children food advertised on TV. |
| C．Not allowing children to watch TV. |
| D．Encouraging children to play computer games. |
（2011·全国II）
"I didn't hear them call my name," explained Shelley Hennig to Active Teens (AT) as she talked about that exciting moment on national television when she won the honor of Miss Teen USA 2004. "Are you ready?" is what she heard. Then she said, "I shook my head no, and then they said‘yes’ and it was announced again."
It was four days after that life changing moment for the seventeen-year-old high school student from Destrehan, Louisiana----she was still on cloud nine．
"I was so shocked! I never believed that it could actually really happen." Present in the audience（观众）that day were: her mother and father, older brother, her friends, and her dance teacher.
Understanding why members of her family and her friends would be there, AT asked why her dance teacher had traveled so far to see her compete（比赛）．"She's always been my role model．I've danced with her since I was six. She's been through so many difficulties and came through them all. I've learned to get over bad life's experiences and learned how to move on because of her."
One of those bad life's experiences for Shelley happened three years ago when her brother Brad was killed in a drunk driving accident. He was 18. She found writing helped her get through the rough days. She said, "I write a lot about my brother. I write a lot, a lot, a lot...”
As Miss Louisiana Teen, she traveled around the state speaking to teens（青少年）about the dangers of drinking and driving. In her role as Miss Teen USA, Sheiley will continue to speak to youth about safe driving, in addition to many other things to help the youth.
When AT asked Miss Teen USA if she had any advice for our readers, she said, "Don't let anyone change you. Hang out with people that make you feel good about yourself. That way, it is easy to be yourself."What do the words “on cloud nine” in Paragraph 2 probably mean?
| A．frightened |
| B．troubled |
| C．very happy |
| D．very angry |
Shelley takes her dance teacher as a role model mainly because she i s ________.
| A．determined |
| B．friendly |
| C．strict |
| D．experienced |
How many children did the Hennings have according to the text?
| A．1. |
| B．2. |
| C．3. |
| D．4. |
What did Shelley often do after she became Miss Louisiana Teen?
| A．She visited drunken drivers. |
| B．She gave dance performances. |
| C．She made speeches on safe driving. |
| D．She helped other teens with their studies. |
What suggestion does Shelley give to the teens?
| A．Be yourself with the support of friends. |
| B．Meet friends whenever possible. |
| C．Go easy on yourself and others. |
| D．Have a good role model. |
阅读下列短文，从每题所给的四个选项(A、B、C和D)中选出最佳选项。
“Our aim is to take our art to the world and make people understand what it is to move，” said David Belle，the cofounder of parkour(跑酷)．
Do you love running？It is a good exercise，yet many people find it boring. But what if making your morning jog a creative one？Like jumping from walls and over gaps and ground rolls？Just like the James Bond in the movie Casino Royale？Bond jumps down from a roof to a windowsill and then runs several blocks over obstacles on the way. It is just because of Bond's wonderful performances that the sport has become popular worldwide.
Yes，that's parkour，an extreme street sport aimed at moving from one point to another as quickly as possible，getting over all the obstacles in the path using only the abilities of the human body. Parkour is considered an extreme sport. As its participants dash around a city，they may jump over fences，run up walls and even move from rooftop to rooftop.
Parkour can be just as exciting and charming as it sounds，but its participants see parkour much more than that.
Overcoming all the obstacles on the course and in life is part of the philosophy(哲理) behind parkour. This is the same as life. You must determine your destination，go straight，and jump over all the barriers as if in parkour and never fall back from them in your life，to reach the destination successfully. A parkour lover said，“I love parkour because its philosophy has become my life，my way to do everything.”
Another philosophy we've learnt from parkour is freedom. It can be done by anyone，at any time，anywhere in the world. It is a kind of expression of trust in yourself that you earn energy and confidence.Parkour has become popular throughout the world because of ________.
| A．its cofounder，David Belle |
| B．the film，Casino Royale |
| C．its risks and tricks |
| D．the varieties of participants |
The underlined word “obstacles” in Paragraph 2 is closest in meaning to “________”．
| A．streets |
| B．objects |
| C．barriers |
| D．roofs |
Which of the following is true of parkour?
| A．It challenges human abilities. |
| B．It is a good but boring sport. |
| C．It needs special training. |
| D．It is a team sport. |
As its participants move around a city，________.
| A．they can ask for help |
| B．they may choose to escape |
| C．they should run to extremes |
| D．they must learn to survive |
Which of the following is the philosophy of parkour?
| A．Sports and extremes. |
| B．Excitement and popularity. |
| C．Dreams and success. |
| D．Determination and freedom. |
阅读下列短文，从每题所给的四个选项(A、B、C和D)中选出最佳选项。
(2012年江西卷，D)For those who make journeys across the world, the speed of travel today has turned the countries into a series of villages. Distances between them appear no greater to a modern traveler than those which once faced men as they walked from village to village. Jet plane fly people from one end of the earth to the other, allowing them a freedom of movement undreamt of a hundred years ago.
Yet some people wonder if the revolution in travel has gone too far. A price has been paid, they say, for the conquest (征服) of time and distance. Travel is something to be enjoyed, not endured (忍受). The boat offers leisure and time enough to appreciate the ever-changing sights and sounds of a journey. A journey by train also has a special charm about it. Lakes and forests and wild, open plains sweeping past your carriage window create a grand view in which time and distance mean nothing. On board a plane, however, there is just the blank blue of the sky filling the narrow window of the airplane. The soft lighting, in-flight films and gentle music make up the only world you know, and the hours progress slowly.
Then there is the time spent being "processed" at a modern airport. People are conveyed like robots along walkways; baggage is weighed, tickets produced, examined and produced yet again before the passenger move again to another waiting area. Journeys by rail and sea take longer, yes, but the hours devoted to being "processed" at departure and arrival in airports are luckily absent. No wonder, then, that the modern high-speed trains are winning back passengers from the airlines.
Man, however, is now a world traveler and cannot turn his back on the airplane. The working lives of too many people depend upon it; whole new industries have been built around its design and operation. The holiday maker, too, with limited time to spend, patiently endures the busy airports and limited space of the flight to gain those extra hours and even days, relaxing in the sun. Speed controls people's lives; time saved, in work or play, is the important thing — or so we are told. Perhaps those first horsemen, riding free across the wild, open plains, were enjoying a better world than the one we know today. They could travel at will, and the clock was not their master. What does the writer try to express in Paragraph 1?
| A．Travel by plane has speeded up the growth of villages. |
| B．The speed of modern travel has made distances relatively short. |
| C．The freedom of movement has helped people realize their dreams. |
| D．Man has been fond of traveling rather than staying in one place. |
How does the writer support the underlined statement in Paragraph 2?
| A．By giving instructions. |
| B．By analyzing cause and effect. |
| C．By following the order of time. |
| D．By giving examples. |
According to Paragraph 3, passengers and turning back to modern high speed trains because ________.
| A．they pay less for the tickets |
| B．they feel safer during the travel |
| C．they can enjoy higher speed of travel |
| D．they don't have to waste time being ‘processed’ |
What does the last sentence of the passage mean?
| A．They could enjoy free and relaxing travel. |
| B．They needed the clock to tell the time. |
| C．They preferred traveling on horseback. |
| D．They could travel with their master. |
What is the main idea of the passage?
| A．Air travel benefits people and industries. |
| B．Train travel has some advantages over air travel. |
| C．Great changes have taken place in modern travel. |
| D．The high speed of air travel is gained at a cost. |
C
Researchers are now using three-dimensional, or 3D printing to create models of the human heart to help heart specialists. The heart doctors can use the models to better help patients before an operation.
Surgeons regularly use digital images to explore the heart in close detail. But no two human hearts are alike. This led Matthew Bramlet to create exact heart models from those images. Dr. Bramlet is a pediatric or children's heart expert at the University of Illinois College of Medicine. He says the 3-D models show information he cannot get any other way.
A 3-D printer uses images from a digital display to create a physical model of a human heart. Matthew Bramlet says doctors can use the model, in his words, "to understand the anatomy(解剖) for the first time."
Pictures from medical tests like CAT scan or MRI are sent to a 3-D printer to create a heart in a plaster or clay form. The printer then constructs the heart, thin layer by thin layer. Dr. Bramlet says the model matches the real heart in every detail.
Dr. Bramlet has built model hearts for different kinds of heart operations. All of the operations were successful. In his first case, digital images showed only one tiny hole in a baby's heart. But, the 3-D printed model showed several defects or problems that the baby was born with. Dr. Bramlet says those defects could not be seen easily in the images. The heart surgeon was able to change the type of surgery for the patient based on the 3-D model. He added that 3-D heart models saves time during heart operations.
Matthew Bramlet continues to research the technology. He is working with the National Institutes of Health to build a 3-D library that includes heart models and images that others can use.Researchers use three-dimensional, or 3D printing to__________.
| A．create models of the human heart |
| B．help heart specialists |
| C．make the painting more concrete |
| D．research human heart |
The reason why Matthew Bramlet created exact heart models is that________.
| A．no two human hearts are alike |
| B．surgeons regularly use digital images to explore the heart |
| C．he created exact heart models from digital images |
| D．3D painting is popular |
What does the underlined word mean__________?
| A．failure to win or to realize a goal |
| B．a change or changed state |
| C．the protection of something |
| D．a fault in someone or something |
How does a 3D model form__________?
| A．a 3-D printer uses images from a digital display |
| B．doctors can use the model to understand the anatomy |
| C．pictures are sent to a 3-D printer, the printer then constructs the heart, thin layer by thin layer |
| D．the model matches the real heart in every detail |
What's the main idea of the passage_________?
| A．the use of 3D painting in medical care |
| B．what is 3D painting |
| C．how 3D painting works |
| D．the research of 3D painting technology |
B
Many areas of cropland in Bangladesh(孟加拉国) are becoming unfit for farming. The land is becoming salty. It is a big problem for the small country. More than 155 million people live in Bangladesh. Growing crops is the most common way Bangladeshis support themselves.
Farmers in the country are learning to grow vegetables in so-called "vertical gardens." The soil in these gardens is better because heavy rains have removed much of the salt.
A vertical garden is easy to make. Villagers fill containers with good soil and natural fertilizers. They put the containers on bricks so they are off the ground. They add pieces of the bricks to the soil to help water flow and drain.
The farmers cut small holes into the sides of the containers. This permits vegetables with short roots a place to grow. Vegetables with long roots grow on top of the container. One bag of soil can produce up to eight kilograms of vegetables in one season.
Villagers also grow vegetables in containers made from large, thin pieces of plastic supported by bamboo. This "vertical tower" measures more than a meter wide. Each of these towers can produce more than 100 kilograms of vegetables. It costs about $12-$13 to build.
The village of Chandipur is in southwestern Bangladesh. Pumpkins and other gourds(葫芦) grow on vines on top of small homes. The vegetables get the food they need from soil placed in containers on the ground.
Shobitha Debna is a 35-year-old farmer in the village. Her garden space is very small. But she is able to grow hundreds of kilograms of vegetables each season.
She says she grows gourds, including pumpkin, as well as green beans, red amaranth, beets, carrots, cauliflower and more.
Ms. Debna depends on the vegetables to earn money. She makes a few dollars a day.
This kind of farming is new in Chandipur. But it may spread across the country.The reason why cropland is becoming unfit for farming is that________.
| A．the soil has been polluted |
| B．more and more land is used for planting trees |
| C．the land is becoming salty |
| D．there is too much rain |
Why the soil in vertical gardens is better_______?
| A．because there is much less salt in the soil |
| B．because there is much salt in the soil |
| C．because there is enough water in the soil |
| D．because there is many nutrients in the soil |
From paragraph 4, we can learn that_______?
| A．vegetables with long roots grow in the sides of the containers |
| B．vegetables with short roots grow out of the small holes in the sides of the containers |
| C．vegetables with short roots grow on top of the container |
| D．vegetables in vertical gardens are not productive |
Ms. Debna grows many kinds of vegetables EXCEPT________.
| A．gourds | B．carrots | C．pumpkins | D．cucumbers |
What can we infer from the passage__________?
| A．Many areas of cropland in Bangladesh(孟加拉国) are becoming unfit for farming |
| B．155 million people in Bangladesh are short of food |
| C．This kind of farming may spread across Bangladesh |
| D．Ms. Debna earns a lot of money through selling vegetables |
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