Compared to adults, children seem to be moving constantly．So it's no surprise that most parents who are quizzed about their child's physical activity level describe their children as fairly active．But a new study of nearly 2,000 British school children suggests that many parents overestimate the amount of physical activity their children are really getting．
The researchers equipped 1,892 British school children, ages 9 and 10, with accelerometers that measure all physical activity during a given time period．The research, known as the Speedy study collected the exercise data from children at 92 schools in Norfolk, England, between April and July 2007．
A child was regarded inactive if he or she recorded less than an hour a day of physical activity．Although the majority of children studied were getting enough physical activity, a sizable minority of children were not．Overall, 39 percent of girls and 18 percent of boys studied were getting less than an hour of physical activity each day．
But if you asked the parents of the inactive children to describe their child's activity level, the vast majority—80 percent—described their children as fairly or very physically active, according to the findings published in the American Journal of Preventive Medicine．Interestingly, the children themselves had more awareness about their lack of physical activity．Overall, 40 percent of children overestimated their physical activity．
But it wasn't the parents of overweight children who were most likely to guess wrong about physical activity levels．The parents who were most out of touch about their child's physical fitness were more likely to have children who were slim．Parents of girls were also more likely to overestimate physical activity．The researchers noted that parents should be educated about the importance of physical activity for children even if the child is not overweight．
"Parents of slim children appear to assume that their children are adequately active," the study authors reported．"Increasing awareness regarding health benefits of physical activity beyond weight control might help have a correct idea of physical activity levels and encourage behavior change．"
69．According to the Speedy study, what kind of children can be judged physically inactive?
A．Slim children．
B．Children with less than an hour a day of physical activity．
C．Overweight children．
D．Children out of touch with their parents for a long time．
70．What does the writer probably mean by saying "a sizable minority of children were not" in Paragraph 3?
A．The amount of children's physical activity is far from the writer's satisfaction．
B．Only a small number of children were not getting enough physical activity．
C．A small number of children didn't overestimate their physical activity．
D．The minority of children were not studied at all．
71．The passage is intended to ____．
A．encourage parents to fairly judge their child's physical activity levels
B．persuade parents to keep an eye on their children's weight
C．urge children to wear accelerometers during exercise
D．advise parents to keep in touch with their children
A new study says one part of the human brain may become smaller as the result of a condition known as jet lag. Jet lag results from flying long distances in an airplane. Jet lag interferes with a person's normal times for sleeping and waking. People with jet lag may feel extremely tired for several days. They also may have problems thinking clearly and remembering.
Kwangwook Cho is a researcher at the University of Bristol in Britain. He reported the findings of his jet lag study in the publication Nature Neuroscience.
The study involved twenty young women who worked for international airlines. The women had served passengers on airplanes for five years. These flight attendants flew across many countries and at least seven time zones. In the study, the flight attendants had different amounts of time to recover from jet lag. Half the women spent five days or fewer in their home areas between long flights. The other half spent more than fourteen days in their home areas.
Mister Cho took some fluid from the women's mouths to measure levels of a hormone that increases during stress. He tested them to see if they could remember where black spots appeared on a computer screen. And he took pictures of their brains using magnetic resonance imaging. This is a way to measure the size of the brain's temporal lobes（颞叶）.
It was found that the women who had less time between flights had smaller right temporal lobes. This area of the brain deals with recognizing and remembering what is seen. The same group performed worse and had slower reaction times on the visual memory test. And their saliva samples showed higher levels of stress hormones.
Mister Cho says he believes the brain needs at least ten days to recover after a long trip. He says airline workers told him their ability to remember got worse after working on planes for about four years. Other studies have shown that increased feelings of stress can cause a loss of cells in the part of the brain that controls memory.
Scientists say more tests are needed to study the effects of jet lag on the brain. They want to find out if too much jet lag could permanently affect memory.
72. According to the text, jet lag _____.
A. can cause difficulties in speaking
B. can make people feel tired for a few weeks
C. is the illness only found in people who work on the airplanes
D. can be caused by flying over several time zones in an airplane
73. It is inferred that more tests need to be done because _____.
A. the conclusion was questioned by many scientists
B. scientists fear that his research is not done properly
C. every scientific conclusion needs the support from many tests
D. the woman who were studied in the research were not healthy
74. Which of the following statements is TRUE about the research results?
A. Women who have a longer rest at home show better memory.
B. Women who fly in short time had smaller right temporal lobes.
C. Women who have longer flights failed the memory test.
D. Women who rest more than 14 days produced less hormones.
75. What is the subject discussed in the test?
A. The cause of jet lag.
B. A story of a group of flight attendance.
C. A research about the effects of jet lag on the brain.
D. The importance of having enough rest after long flights.
The Channel is the name given to the stretch of water which separates England and France. Ferries operate all year round to carry people across the Channel, and they are busy most of the year. January is the only quiet month nowadays. As well as summer holiday-makers, there are day trippers and coach traffic, not to mention lorries and other commercial vehicles. Some ferries carry cars and their passengers, while others also connect train passengers with the Continental rail network.
The biggest hazard for the ferry is the wind. The crew listens to BBC weather reports four times a day. Or they sometimes get gale warnings from local radio station.
Crossing the Channel by ferry is a bit like trying to cross Oxford Street on a busy afternoon, according to one ferryboat captain. The ferries from Folkstone and Dover to Calais and Boulogne have to cross the main flow of traffic. This consists of ships traveling through the Channel to and from Northern Europe. There may be four hundred ships making the journey at any one time, and they all pass through a “choke point” which is only fifteen miles (twenty-five kilometers) wide. The cross-channel ferries have to sail right through the middle of all this traffic.
68. The passage is mainly concerned with _____.
A. the English Channel B. the weather on the Channel
C. cross-channel ferries D. what crossing the Channel by ferry is like
69. The word hazard is closest in meaning to ________.
A. trouble B. danger C. enemy D. problem
70. We can infer from the passage that _______.
A. if there is a gale warning from the BBC, the ferries will stop operating.
B. the traffic on the Channel is very busy only in winter
C. ferries are busiest in the afternoon
D. the crew of the ferry listens to the weather reports four times a day
71. Where does this passage most probably appear?
A. In a dictionary. B. In a novel.
C. In a transportation magazine. D. In a geography textbook.
Section B
Directions: Read the following four passages. Each passage is followed by several questions or unfinished statements. For each of them there are four choices marked A, B, C and D. Choose the one that fits best according to the information given in the passage you have just read.
Just before midnight, six University of Cincinnati students were watching TV in an on-campus apartment when three men burst through the door. While one of the intruders pointed a gun at the group, the other two scooped up $4,400 worth of laptops, cell phones, video games and cash. Once they had what they wanted, the trio fled into the night.
Furious, the students chased down and tackled one of the burglars -- the one with the gun. In the struggle, it went off, and a bullet grazed a student's leg. His friends piled on the gunman and held him until police showed up.
By the next day, the injured young man was back in his apartment, and the suspect was in jail, charged with burglary, felonious assault and receiving stolen property. But how did the men manage to storm into an on-campus residence that November night in the first place? Simple: Students told police the building's main doors hadn't latched properly for days.
As parents confront ballooning college costs and shrinking acceptance rates, they are finding themselves with an even bigger, more basic problem: Which campuses are safe? Colleges seem like idyllic and secure places, and for the most part, they are. But ivy-covered walls can't keep out every bad element. This country's 6,000 colleges and universities report some 40,000 burglaries, 3,700 forcible sex offenses, 7,000 aggravated assaults and 48 murders a year. Other hazards -- fires, binge-drinking, mental-health problems -- are also on the rise.
Of course, that's not what parents and students see on America's serene campuses. There's a false sense of security, says Harry Nolan, a safety consultant in New York City. "Students see guards patrolling at night or a video camera monitoring the dorm entrance and think, Nothing bad can happen to me," he explains. "People don't know that safety controls are often very lax."
65. What did the students do after the burglars fled into the night?
A. They stood there in surprise. B. They ran after the burglars at once.
C. They waited for the police. D. They phoned their teacher.
66. What does the underlined word “latched” in the third paragraph probably mean?
A. watched B. fixed C. locked D. kept
67. What worries parents most except ballooning college costs and shrinking acceptance rates?
A. Their children’s grades in the universities or colleges.
B. Their children’s safety in the universities or colleges.
C. Their children’s behavior in the universities or colleges.
D. Their children’s relationship with classmates in the universities or colleges.
Li Daiyu and her cousin Liu Qian were on a trip to Canada to visit their cousins on the Atlantic coast.Rather than take the aeroplane all the way,they decided to fly from China to Vancouver and to take the train from west to east across Canada in September.The idea that they would cross the whole continent was exciting.
Their friend,Danny Lin,was waiting for them at the airport.He was going to take them to catch ‘The True North’,the cross-Canada train.On the way to the station,he told them, ‘You’re going to see great scenery on your trip.Canada is bigger than the United States.It is second biggest country in the world and as you go eastward,you will see mountains and pass thousands of lakes,forests and wide rivers as well as cities.The idea that you can cross Canada in less than five days is just wrong.It is 5,500 kilometres from coast to coast.Here in Vancouver,you are in the warmest part of Canada.Many people think it is the most beautiful city in Canada,as it is surrounded by mountains on the north and east and the Pacific Ocean on the west.Its population is increasing very rapidly,because the mountain-and-sea city is a very popular place to live in.Even people from Japan come to settle down here.
That afternoon on the train the cousins settled down in their seats.They crossed the Rocky Mountains earlier that day and looked out of the windows at the wild scencry.They saw mountain goats and even a grizzly bear.Their next stop would be Calgary.The Calgary Stampede is a famous Western festival,Cowboys come from all over North America to compete in riding wild horses.Many of them have a gift for working with animals and they can win thousands of dollars in prizes.
That night,they slept as the train rushed through the night across the top of Lake Superior.through the great forests and southward towards Toronto.
64.How did Li Daiyu and Liu Qian arrive in Canada?
A.They sailed across the Pacific Ocean. B.They flew to Vancouver.
C.They took a train to Vancouver. D.They flew to the Atlantic coast.
65.Witch order is right of their train trip?
A.Vancouver Calgary Lake Superior TorontoB.Toronto Vancouver Calgary Lvake SuperiorC.Vancouver Lake Superior Calgary TorontoD.Lake Superior Vancouver Cvalgary Tvoronto
If you go to Juliano’s restaurant in San Francisco,you can’t get a cup of coffee or a hot cheese sandwich.All the food in the restaurant is raw,including the pizza and the rice.
Juliano thinks that cooked food makes us sick. “Food is alive,like you and me.When you cook food,you take away some of the vitamins,”he says,Juliano never eats food that is over 50 degrees.His restaurant doesn’t have a stove(火炉) or a microwave(微波炉).But he has lots of clever ideas for making raw food taste great.Instead of heat,Juliano uses water to prepare foood.He puts foods in water to make them soft.For example,he places beans in water for a few days and rice in water for two or four weeks.
Everything at the restaurant is cold,and the pizza and the rice taste good.So do the fruit and vegetable juices made from carrots ,apples,oranges and so on.Juliano’s restaurant doesn’t serve meat,but some people who cat raw food also eat raw meat.Juliano has three friends who ate raw meat.They all got very sick..One of them is still sick.
Juliano eats mostly fruits,vegetables,nuts,rice and beans.He says he feels very healthy. “Raw food gives you lots of energy,”he says,Juliano says he needs only six hours of sleep a night,and he never gets sick..
61.What is the main idea of the passage?
A.A man who eats only raw food. B.A special restaurant in San Francisco.
C.Raw food is better than cooked food. D.How to make raw food taste good.
62.How is the food in Juliano’s restaurant prepared?
A.Foods are put into water to make them soft.
B.Foods are cooled in a fridge.
C.Foods are heated on a stove to a certain degree.
D.Foods are boiled and then cooled.
63.What is NOT served in Juliano’s restaurant?
A.Carrot juice. B.Cold pizza. C.Raw rice. D.Hot meat.
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