LONDON—Here’s a new warning from health experts：Sitting is deadly.
Scientists are increasingly warning that sitting for long periods—even if you also exercise regularly—could be bad for your health.And it doesn’t matter where the sitting takes place—at the office，at school，in the car or before a computer or TV—just the overall number of hours it occurs.Several studies suggest people who spend most of their days sitting are more likely to be fat，have a heart attack or even die.
In an editorial published this week in the British Journal of Sports Medicine，Elin EkblomBak of the Swedish School of Sport and Health Sciences suggested that authorities rethink how they define physical activity to highlight the dangers of sitting.
While health officials have issued guidelines recommending minimum amounts of physical activity，they haven’t suggested people try to limit how much time they spend in a seated position.
“After four hours of sitting，the body starts to send harmful signals，”said EkblomBak.She explained that genes regulating(调节) the amount of glucose(葡萄糖) and fat in the body start to shut down.
Even for people who exercise，spending long periods of time sitting at a desk is still harmful.Tim Armstrong，a physical activity expert at the World Health Organization，said people who exercise every day—but still spend a lot of time sitting—might get more benefit if that exercise was spread across the day，rather than in a single bout(一回)．
Still，in a study published in 2009 that tracked more than 17,000 Canadians for about a dozen years，researchers found people who sat more had a higher death risk，whether or not they exercised.
“We don’t have enough evidence yet to say how much sitting is bad，” said Peter Katzmarzyk of the Pennington Biomedical Research Center in Baton Rouge，who led the Canadian study.“But it seems the more you can get up and interrupt this sedentary behavior，the better.”
Figures from a U．S. survey in 20032004 found Americans spend more than half their time sitting，from working at their desks to sitting in cars.
Experts said more research is needed to figure out just how much sitting is dangerous，and what might be possible to offset those effects.
“People should keep exercising because that has a lot of benefits，” EkblomBak said.“But when they’re in the office，they should try to interrupt sitting as often as possible，” she said.What is the best title for the text?
| A．Not Sitting Too Much While Working |
| B．How to Avoid Sitting Too Much |
| C．Sitting Too Much Could Be Deadly |
| D．More and More People Sit Too Much |
According to the research，________.
| A．the more time you spend in exercising in a single bout(一回)，the healthier you will be |
| B．those who often sit too much are sure to grow fat or suffer from a heart attack |
| C．regular exercise is effective to get rid of the side effects of sitting too much |
| D．you had better not sit for more than four hours in a single bout |
How does the danger of sitting too much affect the human body?
| A．It results in a higher death risk. |
| B．It increases glucose and fat in the body. |
| C．It makes a person unable to exercise long enough in a day. |
| D．It causes the gene to fail to balance the glucose and fat in the body. |
The underlined word “offset” in Paragraph 10 most probably means “________”．
| A．improve | B．avoid |
| C．ignore | D．achieve |
Rosa Parks was an African-American woman who began the civil rights movement by refusing to give up her seat to a white person on a bus . She stood up for what she believed was right , and her courage inspired countless others to do the same.
Born in Alabama in 1913 , Mrs. Parks grew up on a farm just outside Montgomery in a town called Pine Level . She was home-schooled until she was 11. She later attended the Industrial School for Girls in Montgomery. She briefly attended the Alabama State Teachers College for Negroes , but had to drop out to take care of her mother and grandmother when they became ill.
Mrs. Parks married Raymond Parks in 1932 . He encouraged her to finish her education . This was very uncommon at that time , especially for a woman. Less than 7 percent of African-Americans studied in a high school in the 1930s.
Mrs. Parks also succeeded in gaining the right to vote, which was very difficult for blacks under the segregation laws( 种族隔离制度 ) . In 1943, she began working as a secretary for the NAACP----National Association for the Advancement of Colored People.
Mrs. Parks made her historic decision on December 1,1955. She recalled in her autobiography(自传) ：
“When the driver saw me still sitting, he asked if I was going to stand up and I said , ‘ No, I’m not.’ Then he said , ‘ Well , if you don’t stand up , I’m going to have to call the police and have you arrested .’ I said , ‘ You may do that.’”
Mrs. Parks died on October 24,2005. “ She sat down in order that we might stand up,” said civil rights leaders Jesse Jackson. “ Her imprisonment opened the doors for our long journey to freedom.” From the passage we can infer that in Rosa Parks’ time black people ______________.
| A．were not allowed to take buses |
| B．only stood in the buses |
| C．were looked down upon |
| D．had no right at all |
From the second paragraph we know that Rosa Parks ____________________.
| A．began to learn at the age of 11 |
| B．studied at home until she was 11 |
| C．attended the Industrial School when she was 11 |
| D．graduated from the Alabama State Teachers College |
Rosa Parks didn’t give up her seat to a white person because ________________.
| A．she was tired after a day’s work |
| B．there were empty seats on the bus |
| C．she didn’t want to stand on the bus |
| D．she wanted to be treated equally |
In this passage the phrase “ stood up for ” in the first paragraph probably means “___________”.
| A．acted to protect | B．paid attention to |
| C．looked forward to | D．gave up to |
Many people go to school for an education. They learn languages, history, politics, geography, physics, chemistry and mathematics. Others go to school to learn a skill so that they can make a living. School education is very important and useful. Yet, no one can learn everything from school. A teacher, no matter how much he knows, can not teach his students everything they want to know. The teacher’s job is to show his students how to learn. He teaches them how to read and how to think. So, much more is to be learned outside school by the students themselves.
It is always more important to know how to study by oneself than to memorize some facts or a formula(公式). It is actually quite easy to learn a certain fact in history or a formula in mathematics. But it is very difficult to use a formula in working out a math problem. Great scientists before us didn’t get everything from school .Their teachers only showed them the way. Edison did not even finish primary school. But they were all so successful. They invented so many things for mankind. The reason for their success is that they knew how to study. They read books that were not taught at school . They would ask many questions as they read. They did thousands of experiments. They worked hard all their lives, wasting not a single moment. Above all , they knew how to use their brain. To work out a math problem, you need to know __________.
| A．only a certain formula |
| B．how to memorize some facts |
| C．only some facts |
| D．the method to work it out |
Why were many scientists so successful?
| A．They received good education. |
| B．They were very clever. |
| C．They knew how to learn. |
| D．They learned lots of facts and formulas. |
How did great scientists study?
| A．They read a lot of books and asked many questions while reading. |
| B．They did thousands of experiments. |
| C．They always worked hard and never wasted time. |
| D．All of the above. |
One of the best-known American writers of children’s books is Alfred Strong, or Doctor Strong, as he is better known to readers everywhere. Now, an art show called “Doctor Strong From Then to Now” is travelling around the United States. The pictures and drawings show the history of Doctor Strong.
Doctor Strong first became famous almost fifty years ago when his first children’s book was published. Since then, he has written forty-five books that have sold more than one hundred million copies around the world.
Doctor Strong’s books are known for their easy use of words and colorful, hand-drawn pictures. These drawings bring life to his imaginary creatures. The Cat in the Hat, Horton the Elephant, The Grinch Who Stole Christmas, and hundreds of others.
The San Diego Museum, in California, organized the art show. It included about three hundred Doctor Strong’s original(最早的) drawings and some of his writings.
Most of Doctor Strong’s books, although written in a funny way, have serious messages. For example, in Mc Elligot’s Pool, he describes the danger of pollution. He discusses the arms race in The Butter Battle Book, written in 1984.
Doctor Strong is almost eighty-four years old now. He says he never planned to write stories just for children. He says he writes stories that interest people of all ages. He says he uses easy words so that everyone, even a child, can understand. Alfred Strong is a famous _______ in the United States.
| A．doctor | B．artist | C．writer | D．reader |
Doctor Strong first became famous in __________.
| A．his eighties when an art show was travelling around the United States |
| B．his fifties when his drawings and writings were published |
| C．1984 when his book Mc Elligot’s Pool was published |
| D．his thirties when his first book was published |
Doctor Strong’s books are very popular in America because __________.
| A．they are stories about animals such as cats, elephants and so on |
| B．they are written in easy words with colorful pictures |
| C．he organized the art show in California |
| D．they are written in a funny way |
His purpose in writing many such books is __________.
| A．to show his original pictures and drawings |
| B．to organize a special art show of his own |
| C．to make his readers laugh or smile when they read his books |
| D．not only to interest people but also to uncover some serious social problems |
Three high students become heroes after their act of saving a baby’s life.
Andrew Willis, 15, his brother Chris, 13, and friend Reece Galea, 14, were walking along Swallow Drive on their way to school on May 23, when Nicholle Price ran out of her house, shouting for help. Her six-month-old son Corey had swallowed (吞下) an earring （耳环） and the young mother couldn’t ring for help because something was wrong with her phone. The three teenagers rushed to the aid of Ms Price, called an ambulance (救护车), calmed her down and waited with her until the ambulance arrived before heading to school.
Ms Price, Corey and his grandmother Joyce Finnie visited the school last Thursday to thank the boys for their kind action. “It’s good to know that there are still some good people who will stop and help,” Ms Price said. “While I was shouting for help, a woman walking her dog went straight past, without stopping. I don’t know what would have happened if these boys had not stopped.”
The teenagers were shocked at the attention they received at school for their heroic act but admitted that the incident was nerve-racking(刺激神经的). “We heard her shouting so we knew something wasn’t right,” Andrew said. “We thought someone had died. It was scary （惊慌的） but we just did what we had to do.”
Just as proud as the boys’ parents is their principal, Tim McCallum.
After two days in hospital, Corey has now fully recovered. “He’s got two new teeth to show,” Ms Price said. “I have to keep a closer eye on him. He’s into everything now and grabs whatever he finds to put it straight into his mouth.”The three high students were _____ when a woman ran out of her house shouting for help.
| A．playing near the house |
| B．on their way to school |
| C．walking their dogs nearby |
| D．on their way back from school |
Ms Price spoke of a woman walking her dog without stopping to show _____.
| A．how dangerous the case was |
| B．how brave the three boys were |
| C．why the three teenagers’ action was heroic |
| D．how clever the three boys were |
The underlined sentence in the 4th paragraph probably means “_____”.
| A．they didn’t expect they would be given so much praise |
| B．they felt excited to have become so famous after the incident |
| C．they were supposed to receive so many prizes for their good deed |
| D．they were proud of the attention they received at school for their heroic deed |
Which would be the best title for this passage?
| A．How a baby was saved after swallowing an earring |
| B．Why the mother shouted for help |
| C．Baby life saved: teenage heroes earn high praise |
| D．A mother came to school to thank 3 teenagers |
Studies show that children who eat breakfast do better in school. It doesn’t take much further thought to know that adults will feel better and do better at work as well. Whether you work at home, on the farm, at the office, at school, or on the road, it is not a good idea to have no breakfast.
If we have no breakfast, we are likely to become tired when our brains and bodies run low on fuel (食物). By mid-morning, a lot of us grab a cup of coffee or eat a sugary candy bar to wake up again. This might work for a few minutes, but by lunch time we are hungry. Eating a good breakfast sets the tone for the rest of the day.
Having no breakfast is a popular way to lose weight, but not a smart one. Many people believe that they will lose weight if they have no meals, but that just isn’t true; the body expects to be refueled a few times a day, starting with a healthy breakfast. Eating breakfast is good for losing weight. In fact, people who eat breakfast are more likely to keep a healthy weight.
A healthy breakfast should have some protein (蛋白质) and some fiber (纤维). Protein can come from low fat meats, eggs, or beans. Fiber can be found in whole grains, vegetables and fruits. A good example of a healthy breakfast might be something simple like a hard boiled egg, an orange, and a bowl of whole grain cereal with low fat milk. Stay away from sugary foods and white bread because they are digested (消化) quickly and will leave you hungry and tired in several hours. Protein and fiber will keep you feeling full until lunch time.The first paragraph mainly tells us that ______.
| A．it is necessary to have a good breakfast every day |
| B．many adults are too busy to have breakfast every day |
| C．many adults go to work without having breakfast |
| D．many children go to school without breakfast |
According to the passage, we feel tired at work probably because __.
| A．we need to have a cup of coffee |
| B．we don’t have a good breakfast |
| C．our brains don’t work any longer |
| D．we don’t have enough sleep at night |
What does the underlined sentence in Paragraph 2 mean?
| A．Having a good breakfast can help you to finish your work. |
| B．Eating a good breakfast is enough for the whole day. |
| C．Breakfast is really the most important meal in a day. |
| D．You will be happier if you have a good breakfast. |
We can learn from the last paragraph that ______.
| A．it is healthy only to have beans and eggs for your breakfast |
| B．you mustn’t have meat for your breakfast |
| C．you should eat sugary foods if you feel hungry |
| D．you should eat something which has protein and fiber for breakfast |