Hearing problems may be alleviated by changes in diet and exercise habits.A．removedB．curedC．worsenedD．relieved

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Going on a Diet
A typical person needs about 1,800 calories per day to stay alive.These calories keep your heart ______(51)and your lungs breathing.They keep your organs operating______(52)and your brain running.They also keep your body warm.A person______(53)weight because he or she takes in more calories per day than needed.The only way to lose fat is to______(54)the number of calories that you take in per day.This is the basic______(55)behind going on a diet.
______(56),diets don't work for most people.They do lose weight but then_______(57)the diet and put it back.Building a sensible diet and exercise plan is the key to______(58)a consistent weight.You need to figure out how many calories you need in a day and how many you______(59)take in.The next step is to add exercise so that you can______(60)the number of calories you can consume per day.
Exercise charts can show you how many calories different_______(61)of exercise can burn.Burning 250 or 500 calories per day can______(62)a big difference.You can ride an exercise bike while you are watching TV or you can_(63)the stairs instead of the elevator.Find an exercise______(64).
Exercise can be a lot easier if there is someone to talk to.It's a good idea to wear firm-fitting clothes if you are on a diet.______(65)clothing acts as a reminder of what you are trying to accomplish.

58._________
A:getting
B:measuring
C:maintaining
D:reserving

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第二篇

Exercise and Brain

Just as exercise strengthens the heart and lungs,bones and muscles,it may also power up the brain.A succession of scientific studies of animals implies that physical activity has a positive effect on mental functioning.
"It's clear that the brain benefits from exercise,"says brain scientist William Greenough of the University of Illinois at Urbana-Champaign.His studies with rats have demonstrated two primary effects of activity:Vigorous physical exercise provides the brain with more fuel,and skill-based ex-ercise increases the formation of connections in the brain, which, according to the proposals of some scientists,may make the brain better able to process information.
In one experiment,laboratory rats were separated into three groups.One group was exercised by running inside an automatic wheel,a second group improved their skills in a complicated obstacle course,and a third group was inactive.
"The animals that learned to go through the obstacle course exhibited a greater number of brain connections than the animals in the exercised or inactive groups,"Greenough said."In contrast, the animals that exercised inside the automatic wheel possessed a greater density of blood vessels in the brain than did either of the other two groups of animals."
Learning a new dance step may boost the brain in the same way that learning a language can, he says.And if the dance is a good physical exercise as well,the benefits multiply.Young brains may be especially able to boost brain power through exercise,suggested another of Greenough's experiments that showed the most significant changes in the brain occurred among rats that had been exercised when very young.And while animals aren't people,he says it is logical to make the inference that an effect found in rats may also apply to humans.
Human studies have focused primarily on older adults and suggest that regular exercise can improve the speed with which the brain processes information.Measurements made by Arthur Kramer at the University of Illinois demonstrated that inactive adults,aged 63 to 82,could hit buttons faster in response to a tone after they went through a 10-week water exercise course.A corresponding control group that didn't exercise showed no improvement.

According to the passage what is not the advantage of physical exercises?
A:do good to our mental health.
B:strengthen our hearts and lungs.
C:strengthen our bones and muscles.
D:help us lose weight.

共用题干
第二篇

Exercise and Brain

Just as exercise strengthens the heart and lungs,bones and muscles,it may also power up the brain.A succession of scientific studies of animals implies that physical activity has a positive effect on mental functioning.
"It's clear that the brain benefits from exercise,"says brain scientist William Greenough of the University of Illinois at Urbana-Champaign.His studies with rats have demonstrated two primary effects of activity:Vigorous physical exercise provides the brain with more fuel,and skill-based ex-ercise increases the formation of connections in the brain, which, according to the proposals of some scientists,may make the brain better able to process information.
In one experiment,laboratory rats were separated into three groups.One group was exercised by running inside an automatic wheel,a second group improved their skills in a complicated obstacle course,and a third group was inactive.
"The animals that learned to go through the obstacle course exhibited a greater number of brain connections than the animals in the exercised or inactive groups,"Greenough said."In contrast, the animals that exercised inside the automatic wheel possessed a greater density of blood vessels in the brain than did either of the other two groups of animals."
Learning a new dance step may boost the brain in the same way that learning a language can, he says.And if the dance is a good physical exercise as well,the benefits multiply.Young brains may be especially able to boost brain power through exercise,suggested another of Greenough's experiments that showed the most significant changes in the brain occurred among rats that had been exercised when very young.And while animals aren't people,he says it is logical to make the inference that an effect found in rats may also apply to humans.
Human studies have focused primarily on older adults and suggest that regular exercise can improve the speed with which the brain processes information.Measurements made by Arthur Kramer at the University of Illinois demonstrated that inactive adults,aged 63 to 82,could hit buttons faster in response to a tone after they went through a 10-week water exercise course.A corresponding control group that didn't exercise showed no improvement.

Vigorous physical exercise can________.
A:provide the brain with more fuel
B:increase the formation of connections in the brain
C:make the brain better able to process information
D:do nothing good to our brain

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Many Women Who Beat Cancer Don't Change Habits
Many women who battle breast cancer will tell you it's a life-changing experience. However,a new study shows that for many___1___ ,the changes aren't always positive or permanent.
Beth Snoke has watched her mother and both grandmothers battle and survive breast ___2___.So when she was diagnosed,there was no doubt in her mind ___3___ she had to do.
“I do exactly what the doctors say as far as the medicine that I'm on,as ___4___ as the vitamins,the diet,and the fitness. And I can't stress enough___5___ important that is,”says
Beth Snoke. But a surprising new study shows that___ 6___ every woman who beats breast cancer is getting that message. In fact,nearly 40% of them say even___7___ surviving breast cancer,they haven't made significant changes in the 8 they eat or how much they exer- cise.
“Not all survivors are taking advantage of this teachable moment and making positive health changes in___9___life,”says Electra Paskett,PhD,at Ohio State University's Cornprehensive Cancer Center. Paskett says diet and exercise have been proven to not only help women feel better during and after treatment,they may___10___play a role in preventing some cancers from coming back.___ 11___ growing evidence,some women just aren't listening.
“Colon cancer survivors ___12___ exercise have actually been shown to have improved survival rates.So,yes,it is true that perhaps by making some of these healthy choices we can actually increase their health,”says Paskett.
As a breast cancer survivor ___13___ ,Paskett knows first hand how much difference diet and exercise can___14___.The challenge,she says,is to get more survivors to be more like Beth,during and after treatment.
Experts-say exercising more and eating a healthier diet can also cut___15___on stress and help women overcome depression. There are more than 2 million breast cancer survivors liv-ing in the U. S. of those,nearly a million have yet to change their diet or exercise routines.

9._________
A: their
B: his
C: her
D: our

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第三篇

Iron Deficiencies

Experts have observed for years that endurance athletes,particularly females,frequently have iron deficiencies.Now a new study by a team of Purdue University researchers suggests that even moderate exercise may lead to reduced iron in the blood of women.
"We found that women who were normally inactive and then started a program of moderate exercise showed evidence of iron loss,"says Roseanne M.Lyle,associate professor at Purdue.Her study of 62 formerly inactive women who began exercising three times a week for six months was published in the journal Medicine & Science in Sports & Exercise."Women who consumed additional meat or took iron supplements were able to bounce back,"she notes."But the new exercisers who followed their normal diet showed a significant decrease in iron levels."
Iron deficiency is very common among women in general,affecting one in four female teenagers and one in five women aged 18 to 45,respectively.But the ratio is even greater among active women,affecting up to 80 percent of female endurance athletes.This means,Lyle says,that"too many women ignore the amount of iron they take in."
Women of childbearing age are at greatest risk,since their monthly bleeding is a major source of iron loss.Plus,many health-conscious women increase their risk by rejecting red meat,which contains the most easily absorbed form of iron.And because women often restrict their diet in an effort to control weight,they may not consume enough iron-rich food,and are liable to experience a deficiency.
"The average woman takes in only two thirds of the recommended daily allowance of iron," notes another expert."For a woman who already has a poor iron status,any additional iron loss from exercise may be enough to tip her over the edge into a more serious deficiency,"notes the expert. Exercise can result in iron loss through a variety of mechanisms.Some iron is lost in sweat,and,for unknown reasons,intense endurance exercise is sometimes associated with bleeding of the digestive system.
The best sources of iron,and the only sources of the form of iron most readily absorbed by the body,are meat,chicken,and fish.Good sources of other forms of iron include dates,beans,and some leafy green vegetables.

Who will have a significant decrease in iron levels?
A:All the women.
B:All the inactive women.
C:Women who start to do moderate exercise and follow their normal diet.
D:Women who start to do moderate exercise and consume additional meat or take iron supplements.

Hearing problems may be alleviated by changes in diet and exercise habits.

A:removed
B:cured
C:treated
D:lessened