Question: Many Americans spend more time in cars these days than in the kitchen. But as lives grow busier--and waistlines grow larger--a number of health experts are calling for Americans to reduce their risk of cancer and other diseases by cooking at home more and eating out less. "When dining out, people are likely to _ all the wrong thing," says Rachel Brandeis of the American Dietetic Association. "People take in 50% more fat and sodium when they eat out than when they cook at home. And they often miss out on fruits, vegetables and other vitamin-rich 'powerhouse foods' that may reduce the risk of cancer." Nutritionists know it's not easy to break old habits. Many people say they hardly have time to exercise, let alone fix dinner. Brandeis says her secret is organization. She cooks six nights a week, even though she and her husband both work. She spends 20 minutes thinking about a week's worth of menus and writing a list. She shops just once a week. Brandeis says she chooses easy cooking methods, too. Since she is not quite good at cooking. The American Institute for Cancer Research has produced a guide filled with tips like "Homemade for Health". Melanie Polk, the institute's director of nutrition education, says cooking at home has many advantages. It teaches children about nutrition as well as the importance of sharing housework. The 39-year-old homemaker Kirstin Kristinus of Washington, D.C. says cooking at home brings her family together. She also tries to reduce her family's cancer risk by preparing every meal with many different kinds of food. "The only way to know that you are getting all the good things is to expose yourself to a wide variety of food," says Steven Shiff, a doctor in New Jersey. "If you eat out at a restaurant, it's a lot easier to choose unhealthful things." However, "families don't have to give up restaurants," Shiff says. "It is possible to eat healthfully if you eat outside the home. But it takes probably the same sort of planning that you would have to do to prepare meals at home." What is worrying health experts? A) Americans are having a too busy life. B) Americans are getting fatter and fatter. C) Americans are eating out more and more. D) Americans are in greater danger of getting cancer.
Answer: C

Question: Need a solid excuse to dust off your running shoes? Joggers have been found to live an average of six years longer than those who don't jog.  However, you'll have to run for at least one hour a week for benefit, according to a new study in Denmark.  Researchers found that jogging was associated with a 44 per cent reduction in the   risk of death for those over 35 years compared with deaths among those who did not run.  The same benefit applied to both men and women.  The 44 per cent reduction translates to an 'age-adjusted survival benefit' of 6.2 years in men and 5.6 years in women, according to Dr. Peter Schnohr, chief cardiologist from the Copenhagen City Heart study. Furthermore, the jogger's lives are not only longer but happier too as those who ran reported an overall sense of well-being, said Schnohr.  The results of our research allow us to definitively answer the question of whether jogging is good for your health,' Schnohr said in a statement. 'We can say with certainty that regular jogging increases longevity. The good news is that you don't actually need to do that much to reap the benefits,' he continued.  The study also found that the optimum benefit of jogging was for those who jogged at a slow-to-average pace for between an hour and two and a half hours spread over two or three weekly sessions. Researchers then compared deaths among the joggers among the non-joggers in the main study pool of almost 20,000. Over 35 years, 122 joggers died compared with 10,158 non-joggers.   All the participants involved with the Copenhagen City Heart Study had their cholesterol, blood pressure, blood glucose, and BMI, measured and they were questioned about smoking, alcohol consumption, education, and income. In order to do good to health, the joggers should run   _  . A) for at least one hour daily B) for at least one hour weekly C) for at least one hour monthly D) for at least one hour yearly
Answer: B

Question: BEIJINCG, Feb.28, 2008 (Xinhua) -- China plans to carry out its first spacewalk in second half of the year, an official of the nation's manned space program said here on Thursday. The Shenzhou VII spacecraft will be launched from the Jiuquan Satellite Launch Center in the northwestern province of Gansu late in the year and the astronauts will leave their spaceship for the first time, the official told Xinhua. Compared with the previous two manned space flights, the upcoming Shenzhou VII space mission is more complex.Besides the spacewalk, the crew is also expected to perform extra-vehicular work such as fixing and tightening equipment.The spaceship will also release a small inspection satellite, which keeps an eye on its own performance. China may live broadcast the first ever spacewalk."The Shenzhou VII spaceship is able to live-broadcast the walk, but it has not been decided whether the spacewalk will be broadcast in a live or recorded version," the official told Xinhua. Breakthroughs have been made in significant techniques related to the spacewalk.Research into the development of spaceship and rockets has been going smoothly, and astronauts have undertaken extensive training, according to the official. The Shenzhou VII mission will start the second phase of China's three-stage space program.said the official. In the second stage, China plans further breakthroughs in manned space flight, such as space walks.In this phase, China will put into orbit a space laboratory staffed by humans for short periods and create a fully-equipped space engineering system. In the third stage, China will build a permanent space station and a space engineering system.Astronauts and scientists will travel between the Earth and the space station to conduct large-scale experiments. Which is true according to the passage? A) Important technique about spacewalk remain uncertain in spite of researches. B) spacewalk is the only factor that leads to Shenzhou VII mission's complexity. C) Due to Shenzhou VIPs inability, it's uncertain how to broadcast the spacewalk. D) Our.country is getting along quite well with developing spaceship and rockets,
Answer:
D