energy.It works your muscles and makes your heart work hard so as to send blood to your
muscles.So,exercise makes your heart and muscles strong.Exercise also makes you feel
refreshed.If you exercise a couple of times a week,you will stay happy and healthy.
Some Western countries,such as the United States,have problems with exercise.In the US,
many people don"t have enough exercise because it is hard for them.People have to work
from dawn till dusk,so they don"t have time to take exercise.They work in office buildings
sitting in chairs all day long in front of computers.They cannot get much exercise sitting at desk
passively.
Some Westerners can get exercise walking from their homes to work.However,the majority
of people cannot do this.It is too far from their homes to their offices.They have no choice but
to drive to work.In fact,some have to drive one or two hours to their offices.This is unfavourable
in two ways.First,these people don"t have a chance to exercise because they are sitting in
their cars for two to four hours each day.Second,driving is challenging especially in rush hours
and calls for too much attention.It makes a person worn out.So,when these people arrive home
at night,they don"t have the desire to take exercise after work.
Today,many people in the West are overweight,which causes health problems for them.
Doctors say exercise can help people both lose weight and improve their health.So many
people are trying to get more exercise.But it takes time to change,and when people don"t
see a difference right away,they will lose heart and stop exercising.
6.reason 7.busy 8.far 9.tired/exhausted 10.discouraged/unconfident
only make guesses, of course, but we can be sure that he will be different from what he is
today, for man is slowly changing all the time.
Let us take an obvious example. Man, even five hundred years ago, was shorter than he
is today. Now, on average, men are about three inches taller. Five hundred years is relatively
a short period of time, so we may suppose that man will continue to grow taller. Again, in the
modern world we use our brains a great deal. Even so, we still make use of only about 20%
of the brain"s capacity(容量). As time goes on, however, we shall have to use our brains more
and more, and finally we shall need our brains more and more, and finally we shall need larger
ones! This is likely to bring a physical change too: the head, in particular the forehead, will grow
larger.
Nowadays our eyes are in constant use. In fact, we use them so much that very often they
become weaker and we have to wear glasses. But over long period of time it is likely that man"s
eyes will grow stronger.
On the other hand, we tend to make less use of our arms and legs. These, as a result, are
likely to grow weaker. At the same time, however, our fingers will grow more sensitive because
they are used a great deal in modern life.
But what about hair? This will probably disappear from the body altogether in course of time
because it does not serve a useful purpose any longer. In the future, then, both sexes are likely
to be bald.
Perhaps all this gives the impression that future man will not be a very attractive creature to look
at! This may well be true. All the same, in spite of all these changes, future man will still have a lot
in common with us. He will still be a human being, with thoughts and motions similar to our own.
B. Future man will look quite different from us
C. Man is growing taller and uglier as time passes
D. Man"s organs" functions will change
B. Man"s hair is getting thinner and thinner.
C. Man"s arms and legs have become lighter and weaker.
D. Man has been growing taller over the past 500 years.
B. his brain has grown larger over the past centuries
C. he will use his brain more and more as time goes on
D. the other 80% of his brain will grow in due time
B. He has smaller eyes and wears better glasses.
C. His fingers grow weaker because he doesn"t have to make use of them.
D. He thinks and feels in a different way.
B. body organs will become poorer if they are not used often
C. human beings hope for a change in the future life
D. future life is always predictable
don"t eat it? If you have to make a decision of this type, most people (especially very busy
people) will choose to skip breakfast.
However, many experts in the field of health consider breakfast ( the meal which "break"
you "fast" ) to be the most important t meal of the day. If we eat a good breakfast, they say,
we will have the energy and nutrients (营养) we need to begin our working day with vigor(活力)
and stay hopeful with good honor. However, many people skip breakfast or substitute a cup
of coffee for a well balanced meal. What happens if we ignore the importance of breakfast?
One recent study conducted in the United States tested a large number of people. Participants
included both males and females who ranged in age from 12 to 83. The results showed that if a
person eats an adequate breakfast, he or she will work more efficiently and more productively
than if he or she skips breakfast or eats a very poor breakfast. This fact appears to be especially
true if a person"s work involves mental(脑力的) activities. The study showed that if school-children
eat fruit, eggs, bread and milk before going to school, they will learn more quickly and will be able
to concentrate (集中)on their lessons for a longer period of time than if their breakfast is inadequate.
The study also showed that contrary to what people believe, if you skip breakfast, you will not
lose weight. This is because people become so hungry if they skip breakfast that they eat too much
for lunch and end up gaining weight instead of losing. So remember, if you want to lose weight,
skipping breakfast will not help you. You will likely lose more weight if you decrease your other
meals.
B. you"ll lose weight quickly if you skip breakfast
C. breakfast provides what a person needs to work
D. after a long night, you"ll feel very hungry
means _______.
B. To drink a cup of coffee instead of a well balanced meal.
C. To change a cup of coffee into a well balanced meal.
D. To regard a cup of coffee as a well balanced meal.
B.a proper breakfast will make mental workers more efficient
C.fruit, eggs, bread and milk are the best breakfast for mental workers
D.school-children who have breakfast are much brighter than those who don"t
B.Most people who skip breakfast actually eat more for lunch.
C.People put on weight because they eat too much breakfast.
D.Skipping breakfast won"t help people who want to lose weight.
B. What"s a Healthy Diet
C. Surprising Results of a Study
D. Breakfast - A Meal That Breaks You Fast
People often fall ill because of me__1__,they can hardly blame me;it is largely their own__2__.
A tired person may get__3__specially when he goes to crowded places with polluted air.A
sudden change in__4__is another factor.In hot summer,people turn on the air-conditioner upon
returning home.They will catch a cold easily.
My latest victim is an energetic student.After school,he played football hard for two hours.
Though__5__,he still went to the cinema.Then he got back home and took a cold shower
immediately.
I seized this golden chance to__6__him.He reacted,trying to__7__me,but I was already__8__
deep in his throat.He kept sneezing(打喷嚏)and his nose was running,__9__he put on some
warm clothes,it didn"t work,for there were too many of us.Besides,his sore throat kept__10__
him,and he developed a cough to force me and my family out,but__11__.
The next day he couldn"t go to__12__.He had lost his appetite and was not as__13__as
before.His mother made him orange juice every few hours for more vitamin C,which would help
his__14__.
For two days he was__15__y his mother.As he rested more,his defense strengthened and I
began to feel the__16__.I knew I had to__17__him before long.But I am not the one who gives
up easily,and I made everyeffort to fight back.__18__,it was my turn to feel__19__now,for his
defense system was starting an all out attack against me.I became__20__and finally my time
was over.
Do you know what I am?
( )2.A.business
( )3.A.punished
( )4.A.temperature
( )5.A.excited
( )6.A.injure
( )7.Aetonwith
( )8.Aeproducing
( )9.Aeminding
( )10.Aeminding
( )11.Ascaped
( )12A.bed
( )13A.peaceful
( )14.recovery
( )15A.protected
( )16.A.loss
( )17.A.leave
( )18.Uncertainly
( )19.Aainful
( )20.Aigger
B.responsibility
B.blamed
B.season
B.hurt
B.bother
B.getridof
B.waiting
B.Once
B.upsetting
B.succeeded
B.work
B.afraid
B.development
B.nursed
B.operation
B.catch
B.Unsuccessfully
B.disappointed
B.weaker
C.excuse
C.caught
C.place
C.late
C.attack
C.putupwith
C.hiding
C.Whether
C.comforting
C.regretted
C.school
C.active
C.study
C.scolded
C.pressure
C.forget
C.Unusually
C.nervous
C.smaller
D.fault
D.killed
D.condition
D.tired
D.destroy
D.takeholdof
D.disappearing
D.Although
D.influencing
D.failed
D.hospital
D.happy
D.growth
D.affected
D.movement
D.beat
D.Unfortunately
D.ashamed
D.stronger
brain lives for only three to five minutes. More often the doctors can"t fix the damage. Sometimes
they are afraid to try something to help because it is dangerous to work on the brain. The doctors
might make the person worse if he operates on the brain.
Dr. Robert White, a famous professor and doctor, thinks he knows a way to help. He thinks
doctors should make the brain very cold. If it is very cold, the brain can live without blood for
30 minutes. This gives the doctor a longer time to do something for the brain.
Dr. White tried his idea on 13 monkeys. First he taught them to do different jobs, then he
operated on them. He made the monkeys" blood go through a machine. The machine cooled
the blood. Then the machine sent the blood back to the monkeys" brains. When the brain"s
temperature was 10°C, Dr. White stopped the blood to the brain. After 30 minutes he turned
the blood back on. He warmed the blood again. After their operations the monkeys were like
they had been before. They were healthy and busy. Each one could still do the jobs the doctor
had taught them.
B. the patients are often too nervous
C. the damage is extremely hard to fix
D. the blood-cooling machine might break down
B. trying the operation on monkeys first
C. having the blood go through a machine
D. lowering the brain"s temperature
B. can keep the brain"s blood warm
C. can keep the patient"s brain healthy
D. can help monkeys do different jobs
a. send the cooled blood back to the brain
b. stop the blood to the brain
c. have the blood cooled down
d. operate on the brain
B. c, a, b, d
C. c, b, d, a
D. b, c, d,
benefits of water, could reduce their risk of getting extra pounds, reports a new study that
is published in the latest issue of the journal Pediatrics.
The findings are based on a survey in 32 elementary schools of two German cities, Dortmund
and Essen. The researchers, led by Rebecca Muckelbauer, a nutritionist(营养学家) at the
Research Institute of Child Nutrition Dortmund, weighed about 3,000 children, and asked
them about their beverage consumption(饮料消费量).
At the beginning of the school year, the experts had water fountains added to 17 of the schools.
The scientists also worked with teachers to carry out educational programs that promote the
benefits of drinking water. In contrast to schools in the United States, there are very few
schools in Germany that have water fountains.
At the beginning of the study, there were no big differences in the number of overweight children
in the different groups. But by the end of the school year, children in the schools with water
fountains were 31 per cent less likely to gain extra pounds, compared to kids who went to other
schools, where water drinking was not encouraged.
Children in the schools with fountains increased their water consumption from about 3 up to 4
glasses a day, while those in the other schools continued to drink an average of 3 glasses. Over
the research, the number of overweight kids upped from 384 to 385 out of 1,641 at the schools
with water fountains. In comparison, the number of overweight kids at the other schools increased
from 339 to 364 out of 1,309, Dr. Muckelbauer said.
The experts cannot make any final conclusions and explain why the students who were encouraged
to drink water were less likely to gain extra weight. Dr. Muckelbauer noted that according to a few
other studies, drinking of water increases the rate at which calories are burned, while some other
research suggested that water may temporarily decrease appetite (食欲).
B. mainly deals with the water drinking problem
C. is mainly about the mental health of kids
D. must be a journal entitled by a school
B. The students surveyed were all overweight.
C. It surveyed children in the countryside.
D. It lasted for a whole school year.
B. Further research is needed to support the finding.
C. The experts will encourage all the students to drink water.
D. Why students drinking more get less pounds will be clear soon.
B. Drink more water and become thinner
C. Water fountains at schools help kids stay thin
D. Water consumption at some German schools
- 1We tried our best to make our garden________its surroundings
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- 4如图,已知在Rt△ABC中,∠ACB=90°,AB=4,分别以AC、BC为直径作半圆,面积分别为S1、S2,则S+S2的
- 5某同学研究杠杆的使用特点,他先用弹簧测力计直接提三个钩码.然后在杠杆上挂三个相同的钩码,且保持位置不变,他三次用弹簧测力
- 6用反证法证明“a>b”时,反设正确的是( )A.a>bB.a<bC.a=bD.以上都不对
- 7阅读材料,回答下列问题。材料一 2008年9月25日,“神舟七号”载人航天飞船发射升空,中国航天员首次太空行走持续了大约
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- 4.已知二次函数的图象如图所示,有下列4个结论:①>0;②>0;③<0;④>0;其中正确的结论有( )A.1个B.2个C
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- 10如所示,A、B两物体相距s=7m,物体A以vA=4m/s的速度向右匀速运动.而物体B此时的速度vB=10m/s,向右做匀