People need to be active to be healthy.Our modern lifestyle and all the conveniences we've
become used to have made us keep a long time sitting,such as sitting around in front of the TV or the computer,riding in the car for even a short trip to the store and using elevators instead of stairs.That's dangerous for our health.Physical inactivity is as dangerous to our health as smoking!
Add up your activities during the day in periods of at least 10 minutes each.Start slowly...and
build up.If you're already doing some light activities move up to more moderate ones.A little is good,but more is better if you want to achieve health benefits.
Scientists say accumulate 60 minutes of physical activity every day to stay healthy or improve your health.Time needed depends on effort--as you progress to moderate activities,you can cut down to thirty minutes,four days a week.
Physical activity doesn't have to be very hard to improve your health.This goal can be reached by building physical activities into your daily routine.Just add up in periods of at least ten minutes each throughout the day.After three months of regular physical activity,you will notice a difference--people often say getting started is the hardest part.
A.are less active than in the past(正确答案)
B.are more active than in the past
C.are as active as they used to be
D.are as inactive as they used to be
答案解析：这篇文章讲的是如何通过运动增强体质。段中提到we’ve become used to...我们已经适应了……,表明以前不是这样的。后面又列举不活动的行为,诸如看电视、开车、玩电脑等,都是坐着的。选项A是正确的。
37.Time needed for physical activity depends on()[单选题]*
38.You can improve your health()[单选题]*
A.relaxing and keeping cool
B.spending longer hours in activities
C.eating less and less during short periods of time
D.integrating physical activity into your timetable(正确答案)
39.People say that()[单选题]*
A.they do not have time for physical activity
B.getting started into physical activity is not so difficult
C.getting started into physical activity is the most difficult part(正确答案)
D.they prefer keeping the present situation to doing any activities
We show an amazing tolerance for a form of pollution that is a growing problem:noise.Airplane
traffic is increasing by five percent a year.Urban noise is doubling every ten years.By air,land and
sea,we are facing an onslaught of noise that is threatening our ability to live in this world.
We have granted ourselves the right to make noise.But what about our responsibilities?Have we developed a sense of acoustic responsibility?
The evidence suggests that we have not.Many people seem to believe they have an unlimited right to make noise with cars and motorbikes,and with loud music at home and in the street.In some countries measures have been taken to force people to make less noise.In Britain,for example,a law has been passed preventing people from disturbing their neighbors with music at night.
It is widely accepted that we should deal with our rubbish in a responsible way.Noise is in reality a particularly insidious(潜在的)form of rubbish.It destroys community life,pursues us into our homes,keeps us from sleeping and is the cause of many stress-related illnesses,as well as hearing loss.
Our acoustic environment belongs to all of us.Everyone has the right to use it,but no one has the right to abuse it.Let's start using it responsibly.
40、.The level of noise produced in cities and towns()[单选题]*
A.is four times higher every ten years
B.is four times lower every two years
C.is twice as high now than ten years ago(正确答案)
D.is twice as high now than two years ago
41、The right to make noise()[单选题]*
A.is often questioned
B.is particularly insidious
C.should be completely forbidden
D.should be accompanied by a sense of responsibility(正确答案)
A.think that they have the right to use noisy motorcycles or cars(正确答案)
B.think that cars and motorcycles are disturbing
C.feel responsible for their noise
D.feel guilty for making loud noise
43、The author points out that()[单选题]*
A.noise cannot be prevented at all
B.people do not feel responsible for their rubbish
C.noise and garbage are problems that disturb us at home
D.we should accept our responsibility for noise as we do for rubbish(正确答案)