题目内容：

In a new look at the impact of long-time sitting behavior on health, a new study links time watching television to an increased risk of death. One of the most surprising findings is that it isn’t just couch potatoes who were affected. Even for people who exercised regularly, the risk of death went up the longer they were in front of the TV. The problem was the long periods of time spent sitting still.

Australian researchers who tracked 8,800 people for an average of six years found that those who said they watched TV for more than four hours a day were 46% more likely to die of any cause and 80% more likely to die of cardiovascular (心血管的) disease than people who reported spending less than two hours a day in front of TV.

Time spent in front of TVs and computers and videogames has come under fire in studies in recent years for contributing to a spread of obesity in the US and around the world. But typically the resulting public-health message urges children and adults to put down the Xbox controller and remote and get on a treadmill (跑步机) or a soccer field.

The Australian study offers a different view. “It’s not the sweaty type of exercise we’re losing,” says David Dunstan, a researcher at Baker IDI Heart and Diabetes Institute, Melbourne, who led the study. “It’s the incidental moving around, standing up and using muscles. That doesn’t happen when we are plunked on a couch in front of a television.”

Indeed, participants in the study reported getting between 30 and 45 minutes of exercise a day, on average.The results are supported by a new field of research that shows how long periods of inactivity can affect the body’s processing of fats and other substances that contribute to heart risk. And they suggest that people can help decrease such risk simply by avoiding extended periods of sitting.”

Keeping such processes working more effectively doesn’t require constant intense exercise, but consciously adding more routine movement to your life might help, doctors say. “Just standing is better than sitting,” says Gerard Fletcher, a cardiologist at Mayo Clinic, Jacksonville, Fla., who works standing up at his computer. “When you stand up, you shuffle around a little bit and use muscles not required when you are sitting or lying down.”

Simple strategies for increasing activity include combining household chores such as folding laundry with TV-watching time or getting up to change a TV channel rather than using a remote control. The report, published Tuesday in the American Heart Association journal Circulation, focuses on TV watching in part because it is the main leisure-time activity in many countries, researchers said, especially in the US.

1.One misunderstanding people might have is that ________.

A. the radiation from TV may badly affect your sight

B. TV programs can broaden your horizons effectively

C. watching TV very long is a good way to kill time

D. regular exercise can minimize the side effect of watching TV

2.What is new about the discovery of the Australian study?

A. Remote control shouldn’t be used when people watch TV.

B. People who watch TV too long should take more physical exercise.

C. Sitting too long in front of TV will lead to high risk of heart attack.

D. Long-time sitting is bad for all people including those who exercise regularly.

3.According to the Australian study, how can the risk of death be reduced when people watch TV?

A. By increasing simple movement.

B. By totally avoiding watching TV.

C. By taking some medicine.

D. By increasing sweaty type of exercise.