3．It is reported that a similar technique can be to the treatment of cancer．( )A．appliedB．attach——青夏教育精英家教网——

3．It is reported that a similar technique can be to the treatment of cancer．（　　）

2．Life is hard．It is to be．If we didn't suffer，we'd never learn anything．（　　）

1．It is said that walking is one of the best ways for a person to healthy．（　　）

20．I like___in the autumn in my hometown when the weather is clear and bright．（　　）

19．How Much Exercise Do I Need？
When it comes to exercise，less is not more-but it's certainly better than none．Physical inactivity accounts for as many as 23percent of all deaths from major chronic （慢性的） diseases，yet almost one of every three Americans is sedentary （spending a lot of time sitting down）．According to the Centers for Disease Control，29.4percent of those surveyed （调查） report they have no free-time physical activity at all．City people tend to be more active than country folks，with 27.4percent saying they are sedentary，compared with 36.6percent of those in rural areas．
Light activity can improve physical and mental well-being．While light activity is good，moderate （not very large or very small） activity is even better，and health experts encourage everyone to have at least 30minutes a day of moderate physical activity．But you don't have to head to a gym．As recent studies have confirmed，"lifestyle"activities，such as walking，house cleaning and gardening，are as effective as a structured exercise program in improving heart function，lowering blood pressure and keeping or losing weight．
In one study，overweight，sedentary middle-aged men and women who learned behavioral skills to make them more physically active，such as walking around airports or train stations while waiting for a departure，reduced their body fat percentage and improved their blood pressure and heart function as much as individuals participating in structured programs at a fitness center．In another study，fat women ranging in age from 21to 60who adopted a more active lifestyle lost as much weight as women in a low-impact aerobics （有氧健身） program-and regained fewer pounds in the following year．
Recognizing the value of different levels and types of activity，the American College of Sports Medicine has changed its recommendations on quantity and quality of exercise to include flexibility as well as aerobic and muscle exercise and to acknowledge that multiple short periods of exercise during the day are nearly as beneficial as one long session．

63．By saying that almost one third of Americans are sedentary，the author meansD．
A．they take proper exercise to be healthy
B．they know nothing about light activity
C．they are very fond of physical activity
D．they take little free-time physical activity
64．We can learn from the passage thatD．
A．light activity is especially good for the middle-aged people
B．people like light activity because it won't make them feel tired
C．people only need to do light activity three times a week to keep fit
D．light activity promotes people's well-being physically and mentally
65．What do health experts suggest about moderate activity？A
A．No less than half an hour's moderate activity daily can do us good．
B．Moderate activity is no better than light activity to people．
C．"Lifestyle"activities don't belong to moderate activity．
D．People may go to the gym to take moderate activity．
66．According to the passage，which of the following belongs to a structured exercise program？A
A．Doing gymnastics at a gym． B．Taking outdoor activities．
C．Walking． D．Gardening．

18．Losing weight comes with a lot of health benefits-including making your brain sharper．
Yes，it turns out that overweight may damage cognitive functions such as memory and attention．There have been few studies of overweight and cognitive functioning，possibly because it is generally believed that it is not a primary risk cause for poor cognitive performance．Losing weight，therefore，may help improve these mental functions，according to a new research led by John Gunstad，assistant professor of psychology at Kent State University．
Growing evidence suggests that being fat is linked to cognitive deficits（缺陷）．So Gunstad and his team guessed that losing weight might improve mental function．For their study，they measured memory and attention in a group of l 50overweight participants，some of whom had some kind of operation for weight loss and some did not．All of the volunteers completed mental skills tests to assess their abilities of memory and attention at the beginning of the study，and again 12weeks later．To begin with．about 24%of the patients showed damaged learning and 23%showed signs of poor memory when tested．At the end of the study，those who had lost weight after operation improved their scores into the average or above average range for cognitive functions．Scores for the volunteers who didn't lose weight dropped even further．
The study helped Gunstad to find out whether losing weight had any effect on mental function．Now that he's seen the positive effect that weight loss can have on memory and attention，he says he will next study those who choose to lose weight by the traditional way-eating healthier and getting more active．He expects that losing weight in this way will have a similarly positive effect on the brain．"If we can improve the condition with operations，then we can probably produce the same change with behavioral weight loss as well，''he says．

63．There is less research on overweight and cognitive functions because researchersC
A．believe overweight only affects our body
B．have focused on ways to sharpen people's mind
C．do not consider overweight a main cause for low cognitive ability
D．are clear about the relation between weight and mental functions
64．The result of Gunstad's study shows thatB
A．losing weight has little effect on people's memory
B．losing weight can improve people's mental functions
C．overweight people are likely to have psychology problems
D．overweight people's abilities of concentration differ greatly
65．What is Gunstad planning to prove next in his research？D
A．Slim people are smarter than overweight people．
B．Healthy diet is better than exercise in losing weight．
C．Traditional ways of losing weight are better than operation
D．Overweight people will get smarter by taking more exercise．
66．Which of the following is the best title for the text？D
A．Body Weight and Health B．Losing Weight by Operation
C．Ways to Improve Mental Functions D．Losing Weight to Sharpen Your Mind．

17．-We experienced a freezing cold winter this year．
-Oh，yes．I think ______ is the power of global warming that the climate goes from one extreme to the other．（　　）

16．Despite the rapid progress in science and technology，scientists cannot yet when there will be a major earthquake．（　　）

15．With the sun down mercilessly from the clear sky，the traveler felt thirsty and tired out．（　　）

0 136268 136276 136282 136286 136292 136294 136298 136304 136306 136312 136318 136322 136324 136328 136334 136336 136342 136346 136348 136352 136354 136358 136360 136362 136363 136364 136366 136367 136368 136370 136372 136376 136378 136382 136384 136388 136394 136396 136402 136406 136408 136412 136418 136424 136426 136432 136436 136438 136444 136448 136454 136462 151629