题目
题型:同步题难度:来源:
or skipping rope for hours, you weren"t thinking fitness, you were thinking entertainment. But in this age of
high-tech home equipment and underused gym member-ships, the simple joy of jumping rope has been
forgotten. Rediscove ring" it will give you a total-body exercise you can find.
Although considered as an excellent form of exercise, jumping rope has never gained widespread
acceptance because of two funda mental reasons. First, most people recognize jumping rope as an ex-cellent
form of cardiovascular (心血管的) exercise, but they also believe that it is simply too difficult. In other words,
they don"t think they"ll be able to continue jumping for the near 20 minutes that it takes to achieve a beneficial
physical outcome. Second, many view it as somewhat boring and overly repetitive not as something fun or
enjoyable.
As a matter of fact, jumping rope can be great fun if you find a proper way to practice it. Instead of doing
the usual two-foot bounce over and over again, people good at rope-jumping often change their pattern every
10 or 20 jumps. A single bounce, a double bounce, a skip, a knee-up, side swings, as well as a variety of other
easy-to- learn free-style rope-jumping.
Now researchers are learning that jumping rope also prepares the brain for learning. It is an exercise
allowing both brain hemi- spheres to perform in parallel to each other. In short, jumping rope can be a life-long
activity requiring little equipment, time and space, yet leading to a much healthier life.
B. people now have more advanced equipment
C. racing around the playground was preferred
D. people now like to have exercise in a gym
B. it is neither easy nor enjoyable
C. it is considered boring and repetitive
D. it requires little equipment, time and space
B. the usual way should not be used
C. the easiest way is always the best
D. there are many ways to follow
B. is suitable for students only
C. helps both brain hemispheres work together
D. can be dangerous for old people
答案
核心考点
试题【阅读理解。 Remember how great exercise was when you were a little kid? Back then,】;主要考察你对题材分类等知识点的理解。[详细]
举一反三
for man-made global war ming was"stronger than ever".
After analyzing more than 100 scientific papers published in the last few years, a team of British
researchers say there is an"in creasingly small possibility" that the world is warming up because of natural
variations (变动) in climate.
Instead, man-made global warming-caused by the burning of fossil fuels-is making its mark on every
continent and ocean, they say.
The studies used computer models to see whether changes in air temperature, sea ice, sea temperature,
wetness, rainfall and ocean saltiness recorded in the last 50 years could be explained by nature.
Since 1980,the average global temperature has increased by around0.5℃,they found. The same warming
pattern was also found deep in the world"s oceans.
Natural forces such as volcanic eruptions and returning chan ges in the brightness of the sun could not
explain what was happen- ing to the world"s climate, Dr Stott said.
The sun"s output had actually fallen over the last 50 years, he said.
Even if the sun had got warmer over the last few decades-as some skeptics say-both the upper and lower
layers of the atmos phere should have got hotter.
However, in the last 50 years the lower atmosphere has warmed while the upper atmosphere has actually
cooled, Dr Stott said.
Drier parts of the world are getting drier, while wetter areas are getting more rain-a finding in agreement
with man-made climate change, the report found.
And the amount of mid summer sea ice in the Arctic is also declining over time-even with the natural
yearly variations, the study found.
The study comes along with growing public doubt about climate change.
B. mankind isn"t to blame for global warming
C. mankind is to blame for global warming
D. global warming will disappear sooner or later
B. The increase of the brightness of the sun.
C. The warming pattern of the world"s oceans.
D. The burning of fossil fuels by the human being.
B. believe global warming will disappear sooner or later
C. doubt the global warming will disappear sooner or later
D. doubt the global warming is caused by humankind
B. Many people don"t believe the study of the British researchers now.
C. The public have been used to the climate changes these years.
D. The result of the study comes from the opinions of the public.
found in the African rain forest, suddenly turns up in children in the American Midwest, it"s hard not to wonder of the disease that comes from foreign animals is homing in on human beings." Most of the infections (感染)
we think of as human infections started in other animals" says Stephen Morse director of the Center for Public
Health Preparedness at Columbia University.
It"s not just that we"re going to where the animals are ; we"re also bringing them closer to us. Popular
foreign pets have brought a whole new disease to this country. A strange illness killed Isaksen"s pets and she
now thinks that keeping foreign pets is a bad idea."I don"t think it"s fair to have them as pets when we have
such a limited knowledge of them" says Isaksen.
" Laws allowing these animals to be brought in from deep forest areas without stricter control need
changing," says Peter Schantz. Monkey-pox may be the wake-up call. Researchers believe infected animals
may infect their owners. We know very little about these new diseases. A new bug (病毒) may be kind at first. But it may de- velop into something harmful (有害的). Monkey-pox doesn"t look a major infectious disease.
But it is not impossible to pass the disease from person to person.
B. prevent us from being infected
C. enjoy being with children
D. suffer from monkey-pox
B. We need to study native animals.
C. They can"t live out of the rain forest.
D. We do not know much about them yet.
B. A clear warning.
C. A dangerous animal.
D. A morning call.
B. may easily get infected by diseases from dogs
C. should not be allowed to have pets
D. should stop buying pets from Africa
Human beings use a little less than half the water available worldwide. Yet shortages and droughts (干旱)
are causing starvation and poverty in some areas, and industrial and agricultural by-products are polluting water
supplies. Since the world"s population is expected to double in the next 51 years, many experts think we are on
the edge of a widespread water crisis.
But that doesn"t have to be the result. Water shortages do not have to trouble the world-if we start valuing
water more than we have in the past. Just as we began to value petrol more after the 1970s oil crisis, today we must start looking at water from a fresh economic view. We can no longer afford to consider water a nearly
free resource of which we can use as much as we like in any way we want.
Instead, for all uses except the demand of the poor, governments should price water to reflect its real value. This means charging a fee for the water itself as well as for the supply costs.
Governments should also protect this source by providing water in more economically and environmentally
sound ways. For example, often the cheapest way to provide irrigation (灌溉) water in the dry places is through small-scale projects, such as gathering rainfall in depressions(凹地) and pumping it to nearby cropland.
No matter what steps governments take to provide water more efficiently, they must change their ways to
use water. Rather than control hundreds or even thousands of local, regional agencies that watch water use,
countries should set up central authorities to manage water policy.
B. The world population is increasing faster and faster.
C. Half of the world"s resources have been seriously polluted.
D. Human beings have not placed sufficient value on water resources.
B. has been exaggerated by some experts in the field
C. poses a challenge to the technology of building reservoirs
D. is underestimated by government organizations at different levels
B. stimulate domestic demand
C. equal its real value
D. take into account the occurrences of droughts.
seriously. Now however, doctors have begun to look into laughter and the effects it has on the human body.
They have found that laughter really can improve people"s health.
Tests were carried out to study the effects of laughter on the body. People watched funny films while
doctors checked their heart, blood pressure, breathing and muscles. It was found that laughter has similar
effects to physical exercise. It increases blood pressure, makes the heart beat quicker and makes people
breathe deeper; it also works several groups of muscles in the face, the stomach, and even the feet. If laughter
exercises the body, it must be beneficial.
Other tests have shown that laughter appears to be able to reduce the effect of pain on the body. In one
experiment doctors produced pain in groups of students who listened to different radio programmes. The
group that tolerated (忍耐) the pain for the longest time was the group which listened to a funny programme.
The reason why laughter can reduce pain seems to be that it helps to produce a kind of chemical in the brain
which diminishes both stress and pain.
As a result of these discoveries, some doctors in the United States now hold laughter clinics, in which they
help to improve their patients"condition by encouraging them to laugh. They have found that even if their
patients do not really feel like laughing, making them smile is enough to produce beneficial effects similar to
those caused by laughter.
B. laughter can be tolerated
C. there is a way to reduce pain
D. laughter can work the muscles in the feet
B. smile can produce the same effects as laughter
C. pain can be reduced by laughter
D. laughter is best medicine
A. test
B. stop
C. reduce
D. increase
B. in order to improve patients" health
C. to make patients smile
D. to prove smile and laughter have the same effect
think that you have to go to the mountains to learn how to climb, you"re wrong. Many Americans are learning
to climb in city gyms (体育馆). Here, people are learning on climbing. The climbing wall goes straight up and
small holding places for hands and feet.
How do people climb the wall? To climb, you need special shoes and (保护带) around your chest to hold
you. There are ropes (绳索) tied to your. The ropes hold you in place so that you don"t fall. A beginner"s wall
is usually about 15 feet high, and you climb straight up. There are small pieces of metal that stick out for you
to stand on and hold on to. Sometimes it"s easy to see the new piece of metal. Sometimes, it"s not. The most
difficult is an your fear. It"s normal for humans to be afraid of falling, so it"s difficult not to feel fear. But when
you move away from the wall, the and the ropes hold you, and you begin to feel safe. You move slowly until
you reach the top.
Climbing attracts people because it"s good exercise for almost everyone. You use your whole body,
especially your arms and legs. This sport gives your body a complete workout. When you climb, both your
mind and your body can become stronger.
B. It is impossible to build up one"s body by climbing.
C. People can only learn the skill of climbing outdoors.
D. It is always easy to see holding places in climbing.
B. to control your fear
C. to move away from the wall
D. to climb straight up
B. exercise
C. excitement
D. tiredness
B. To prove the basic need for climbing.
C. To encourage people to climb mountains.
D. introduce the sport of wall climbing.
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