Is carrying a few extra pounds into your senior years healthy? Advice has been mixed. Now, two studies published this month attempt to better define the ideal weight for fitness and longevity for adults over age 60.               The main point is that you don't need to worry about being slightly overweight, as long as that extra weight is maintained at a consistent level. However, being very overweight is detrimental to health, and exercising to lose body fat and to gain muscle mass is always beneficial.               Determining the ideal weight for older people has been a pursuit, with researchers looking for what weight is not too thin, but not too fat. Studies have suggested that being slightly overweight can be protective.                For example, a 2001 study by researchers at Yale University found that moderately overweight senior adults with a body mass index (BMI) of 27 -- two points higher than the BMI of 25 that defines being overweight -- lived longer than seniors who were either thinner or heavier. There's a fine line here, though, because carrying extra pounds is a risk factor for many types of cancer and other diseases. And, according to the researchers behind the two new studies, the general public has misinterpreted the Yale findings to mean that being very overweight is healthy.               One new study, published this month in the American Journal of Epidemiology by researchers at The Ohio State University in Columbus, found that seniors who maintained a stable, slightly overweight status survived most probably over the 16 years surveyed. Those seniors who had a so-called healthy weight going into the study (a BMI between 18.5 and 25) and who gained weight, but stayed below BMI 25, had a slight possibility of surviving over the study period.               People in the obese group, with a BMI higher than 35 and who continued to gain weight, faced the worst among all the groups in the study. But next-to-last were normal-weight people who lost weight, but this was likely because they... As for the 2001 study, the general public wrongly think that   _  . A) it is healthy and protective for people to be very overweight B) people with a BMI of 27 or more are classified as overweight C) senior adults with a BMI of 27 lived longer than those either thinner or heavier D) carrying extra pounds is a risk factor for many types of cancer and other diseases
A

The wedding between Prince Wiliam and Kate Middleton on April 29 has focused the world's camera lenses   on the UK. In Britain, there is a constant debate about the relevance  of the royal family to modern British society. However, Windsor (the family name of the British Royal Family) and Middleton have been seen to represent a more modern, forward-looking nation. Nigel Baker, the British ambassador to Bolivia, believes that the royal wedding is "about modern   Britain". "The estimated 2 billion spectators across the world will see that Britain is one of the most culturally and ethnically diverse nations in the world, home to 270 nationalities speaking 300 different languages, founded on tolerance and respect for difference," wrote Baker on his blog. According to Baker, the wedding could help viewers to see "why Britain is one of the most dynamic and creative countries in the world": The television on which most people watched the event was invented by John Logie Baird, a Briton, and the World Wide Web that broadcast the event to millions more was invented by another Briton, Tim Berners-Lee. The guests who attended the wedding ceremony gave more than a few clues as to the nature of modern Britain. David and Victoria Beckham represent Britain's obsession  with football and celebrity. Leaders from different religious backgrounds supported Baker's comments on the multicultural nature of modern British society. Before the wedding, David Elliott, arts director of the British Council China, agreed that the wedding would be a showcase for modern Britain: "I think, and hope, that it (modern British influence) would be values like openness, multiculturalism, creativity, sense of humor and the traditional British sense of fair play," he said. Furthermore, events such as the Olympics in London in 2012 may also increase people's sense of Britishness. According to a poll published in Daily Telegraph, more than a third of people in the UK admitted they felt "very British" when watching the Olympics. .  Why is the inventor of the World Wide Web mentioned? A) To inform readers about some well-known British inventors. B) To point to the importance of the World Wide Web for the wedding. C) In support of the idea that Britain is a nation of creative and original people. D) To encourage people to watch the wedding on the Internet.
C

When the famous dancer Fred was interviewed for a job by a Hollywood producer , the movie Expert  turned him down, saying,"Can't sing. Can't act. Dances a little." Here's another stupid mistake. When the great scientist Albert Einstein was at school, his teachers considered him rather dull. And a final story, the famous Polish pianist Paderewski was told by a teacher that he'd never be a success as a performer because the middle finger on each hand was too short. What lessons can be drawn from these three experiences?  First, true genius  cann't be suppressed .For some reason or other it works its way out. Second, early judgments of a person's abilities may be unfair or just wrong. Third, when there is a real determination to succeed, obstacles fall by the wayside. The famous motto "ad astra per aspera" can be translated as " To the stars through hardships". Astaire, Einstein and Paderewski proved their critics wrong. The writer of the passage thinks that the reader  _  . A) Knows that the three men were successful men B) Dreams to become like one of the men some day C) Sympathizes with   the poor teachers of the three men D) Knows that Fred Astaire was an actor famous for performing Shakespeare's plays

A