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1、 世纪金榜 圆您梦想 更多精品资源请登录 第 1 页（共 8 页） 山东世纪金榜科教文化股份有限公司武邑中学 2014-2015 高三一轮 复习单元检测题五第二部分：阅读理解第一节(共 20 小题；每小题 2 分，满分 40 分)ALONDON-Heres a new warning from health experts: Sitting is deadly. Scientists are increasingly warning that sitting for prolonged periods-even if you also exercise regularly-could be b
2、ad for your health. And it doesnt 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 ev
3、en 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 guidelin
4、es recommending minimum amounts of physical activity, they havent 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, Ekblom-Bak said. She explained that genes regulating(调节) the amount of glucose（葡萄糖） and
5、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 benef
6、it if that exercise were spread across the day, rather than in a single bout.（一回）Still, in a study published last year that tracked more than 17,000 Canadians for about a dozen years, researchers found people who sat more had a higher death risk, independently of whether or not they exercised.We don
7、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 2003-2004 fou
8、nd 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 benef
9、its, Ekblom-Bak said. But when theyre in the office, they should try to interrupt sitting as often as possible, she said. 1What is the best title for the text?A. Not Sitting Too Much While Working B. How To Avoid Sitting Too MuchC. Sitting Too Much Could Be Deadly D. More And More People Sit Too Muc
10、h2According to the research,_.A. the more time you spend in exercising in a single bout, the healthier you will be.B. those who often sit too much are more likely to grow fat or suffer from a heart attack.C. regular exercise is effective to get rid of the side effect of sitting too much. 世纪金榜 圆您梦想 更
11、多精品资源请登录 第 2 页（共 8 页） 山东世纪金榜科教文化股份有限公司D. you had better sit for more than four hours in a single bout.3How 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
12、 a day.D. It causes the gene to fail to balance the glucose and fat in the body.4In the opinion of Ekblom-Bak, youd better have a rest in the office by_.A. sending your friends e-mails B. having a walk around your office as often as you can.C. chatting online or playing computer games D. listening t
13、o music with your head on the desk.BOne of the best-loved American writers was William Sydney Porter, or O.Henry. From 1893 he lived with his family in a house in Austin, Texas, which is now a museum. Visitors to Austin can see the house. It was saved from destruction (破坏) and turned into a museum i
14、n1934. The museum is a good way to learn about the interesting life of the American writer.William Porter rented this house in Austin and lived there with his wife Athol and daughter Margaret for about two years. Many objects in the museum belonged to the Porters. Others did not. An important piece
15、in the room is the original photograph over here. It was taken there in the house about 1895. The piano there goes back to the 1860s. His wife took lessons on it when she first moved to Austin.Porter did not start his career as a successful writer. He worked at a farm, land office and bank. He also loved words and writing. The museum has a special proof of Porters love of language - his dictionary. It is said that he had read every word in that dictionary.Later William Porter was forced to leave Austin bec
