概要写作二1、阅读下面短文,根据其内容写一篇60词左右的内容概要。 While numerous studies have looked at how individual habits may extend or shorten a persons life, far fewer have tried to quantify the benefits of practicing a number of healthy habits together, especially for people who begin only later in life. This was the focus of a 2007 study published in The American Journal of Medicine. The trial examined whether newly adopting a healthy lifestyle in middle age could still produce significant benefits, in terms of lower risk of heart disease. A group of 15,792 older men and women living in four different communities in the United States were tracked from 1987 to 1998. Aged 45 to 64 years, the subjects were examined for their weight,height,dietary intake,smoking habits and exercise. The researchers noted they did not include moderate alcohol consumption, because the study aimed to assess the effect of adopting new healthy habits, and beginning to drink in middle age is not widely recommended. Interestingly, at the beginning of the study only 8.5% of the subjects were practicing all four healthy habits. After 6 years, an additional 970 people had adopted all four of the primary habits. The most common switch was to begin eating at least 5 fruits and vegetables each day. The researchers examined the successful switchers,and concluded that the subjects most likely to change habits for the better were older,female, those with a college education, higher income and without a history of high blood pressure. After four additional years of follow-up the healthiest lifestyle switchers enjoyed a 40% reduction in the risk of death from any cause, and a 35% lower chance of heart attack or strokes.2、阅读下面短文,根据其内容写一篇60词左右的内容概要。The surprising reason you cant lose weight Bob and Bill are roommates and good friends.They eat the same food, have similar jobs and they recently started doing the same sports together, too. The only difference between them, it seems, is sleep schedules: While Bob gets a solid 7 to 8 hours each night, Bill has an irregular sleep schedule and doesnt get enough sleep. Can you guess why their shared exercise and nutrition method is successful for Bob and not for Bill? The only difference is sleep. While Bill and Bob are made up, the results of their circumstances are arent. If you want your lifestyle changes to reflect in the way you look and feel, sleep is the key. As The Washington Post pointed out this week, a growing body of research points to the fact that skimping on sleep can lead to weight gain,an increase in injuries and a decrease in testosterone(雄性激素) levels, which is often associated with depression and bone density(密度) loss. During deep sleep, the bodys muscles recover, repairing tissue tom during sports, and the brain creates memories and clears out toxins(毒素). Without these processes,youre exercising and feeding a faulty machine. “Many people think you build muscle in the gym,but you actually build when you sleep,” Chirjeev Sawhney, a personal trainer and fitness manager at a Golds Gym in Arlington,told the Post. Its when you repair that broken tissue that you get stronger, Sawhney said. If the fact that sleep makes your physical fitness more achievable isnt enough,consider its many other benefits: Quality sleep can make you better at your job. It can extend your lifetime. Itll make you more likable. Its time to getthe sleep you deserve. You have nothing to lose (except maybe a few pounds).3、阅读下面短文,根据其内容写一篇60词左右的内容概要。 Physicist Stephen Hawking said people should return to the Moon and go to Mars because leaving Earth may be the only way to save humanity. Hawking said that as Earth faces climate change and pressure on natural resources, human beings need to reach beyond our planet. We are running out of space and the only places to go to are other worlds, he said. It is time to explore other solar systems. Spreading out may be the only thing that saves us from ourselves. I am convinced that humans need to leave Earth, he added. “ If humanity is to continue for another million years,our future lies in boldly going where no one else has gone before.” The University of Cambridge professor spoke during a visit (in June) to the Starmus Festival in Trondheim, Norway. Hawking said human beings should return to the Moon by the year 2020 and Mars by 2025. This, he said, “will unite humans in the shared purpose of exploring the universe.” “ Spreading out into space will completely change the future of humanity,he said. “ I hope it would unite competitive nations in a single goal, to face the common challenge for us all.” Hawking added that reaching the Moon, Mars and other planets would get young people interested in space-relatedsciences. He said making the first moves into space would “ elevate humanity because it would have to involve manycountries. Whenever we make a great new