题目
题型：期末题难度：来源：
the conditions in which sleep takes place. The young may need more sleep than the old, but usually eight
hours are enough for the health of grown-ups. Some can do with less than this amount,but others may need
more. Every person knows his own need. It is then a matter of good judgement to satisfy his need. Sleep
should always be enough to make one bring back his strength and get ready for a day"s work.
Fresh air is necessary to sound sleep. It is not without reason for some people to think that it is practicable
to sleep in the open air. When one can keep himself warm, out-of-door sleeping probably gives the body the
most complete relaxation (松弛).
Ability (能力) to sleep is large lay habit. The conditions re- ferred to only lead to sleep. Out-of-door
exercises, a good habit of regular hours and the avoidance (避免) of late eating and worry, which are largely
within the control of any person, are all helpful to sound sleep.
A bath at bedtime, neither hot nor cool but of body temperature, may be helpful to sleep. Sleep-producing
drug (药) should never be taken except when suggested by a doctor.
B. No more than eight hours.
C. Eight hours or so.
D. No less than eight hours.
B. Fast sleep.
C. Complete sleep.
D. Sleep without any sound.
B. Staying up late at night.
C. Eating something at bedtime.
D. Forming the habit of taking sleep-producing drug.
B. his height
C. his weigh
D. his character
B. do any housework
C. think a lot
D. go out for relaxation
答案
核心考点
试题【阅读理解。 Enough sleep is important to health. The amount of sleep needed depend】；主要考察你对题材分类等知识点的理解。[详细]
举一反三
slowly for long distances become so popular? Most joggers begin because they hear it is a very good exercise.
Jogging makes the heart stronger and helps people lose weight. It can also help them feel better about
themselves.
Donald Robbins, who is forty-two years old and works in an office, began jogging a few years ago
because he felt he was too fat. At first he could only run about 100 yards. It took him three months to be
able to run a mile. But two years later, he ran in a marathon race over twenty-six miles. Many joggers, like
Donald Robbins, feel that if they can succeed at jogging, they can succeed at other things also, and quite often
this feeling helps them at their jobs.
Should you jog too? If you do, be sure to ask your doctor for advice. Jogging may be too much exercise
for you.
Does jogging cost much? No, it costs almost nothing. But it is very important to have a good pair of shoes
that are made especially for jogging. They protect your feet and legs from the shock of running on hard
surface.
How fast should you go? Jog with a friend and talk to each other as you run. If you have difficulty in
talking, you"re going too fast.
How far should you jog? Remember not to go too far too soon. In fact, you should walk, not run, the first
few times. Then do some short jogs, but no more than what you can do comfortably. After that, increase your
distance a quarter or half mile every two weeks or so. Maybe in a few years, you can run in a marathon too, as
thousands of people do.
B. jogging as an exercise
C. jogging in a safe way
D. jogging as a way to marathon
B. Many people think that jogging is a set of one"s willpower (意志力)
C. Jogging is time-consuming.
D. You should not talk while jogging.
B. Have a sports suit.
C. Remember not to go too far too soon at the beginning.
D. Ask your doctor for advice.
B. One can start jogging at any time and in any place.
C. It is a very good exercise.
D. One can talk with one"s friend while jogging.
B. Para. 2.
C. Para. 3.
D. Para. 4.
Scientists have learned a lot about the kinds of food people need. They say that there are several kinds of
food that people should eat every day. They are: (1) green and yellow vegetables of all kinds; (2) citrus (柑橘)
fruits and tomatoes; (3) potatoes and other fruits and vegetables; (4) meat of all kinds,fish and eggs; (5) milk
and food made from milk; (6) bread or cereal (谷类), rice is also in this kind of food; (7) butter, or something
like butter.
Paragraph 2
People in different countries and different places of the world eat different kinds of things. Foods are
cooked and eaten in many different kinds of ways. People in different countries eat at different times of the
day. In some places people eat once or twice a day; in other countries people eat three or four times a day.
Scientists say that none of the differences is really important. It doesn"t matter whether foods are eaten raw
(生的) or cooked, canned or frozen. It doesn"t matter if a person eats dinner at four o"clock in the afternoon
or at 11 o"clock at night. The important thing is what you eat every day.
Paragraph 3
There are two problems, then, in feeding the large number of people on the earth. The first is to find some
ways to feed the world"s population so that no one is hungry. The second is to make sure that people
everywhere have the right kinds of food to make them grow to be strong and healthy.
B. potatoes, carrots, rice, bread
C. oranges, bananas, fish, tomatoes
D. beef, pork, fish, milk
B. have dinner at twelve o"clock
C. eat cooked food all the day
D. eat something from each of the seven kinds of food every day
B. cook their food in the same way
C. have their meals at the same time
D. eat food in different ways
B. There are too many people in the world.
C. One of the problems is that no one is hungry.
D. The scientists are trying to make people grow to be strong and healthy.
B. What to do with the two problems.
C. How to cook food in different ways.
D. Why people eat different kinds of food.
Farmers use different kinds of soil conservation methods to protect their land against damage from farming
and the forces of nature. One important form of soil conservation is the use of windbreaks.
Windbreaks are barriers (栅栏) formed by trees and other plants with many leaves. Farmers plant them in
lines around their fields.
Windbreaks stop the wind from blowing soil away. They also keep the wind from destroying or damaging
crops. They are very important for growing grains, such as wheat.
There have been studies done on windbreaks. Studies in parts of West Africa, for example, found that grain
harvests can be twenty percent higher in fields protected by windbreaks. This was compared to fields without
such protection.
Windbreaks can help protect a farmer"s land. However, windbreaks seem to work best when they allow a
little wind to pass through. If the wall of trees and plants blocks the wind completely, then violent air motions
will take place close to the ground. These motions cause the soil to lift up into the air where it will be blown
away.
For this reason, a windbreak is best if it has only sixty to eighty percent of the trees and plants needed to
make a solid line.
An easy rule to remember is that windbreaks can protect areas up to ten times the height of the tallest trees
in the windbreak.
There should be at least two lines in each windbreak. One line should be large trees. The second line, right
next to it, can be shorter trees and other plants with leaves. Locally grown trees and plants are best for
windbreaks.
Windbreaks not only protect land and crops from the wind. They can also provide wood products. These
include wood for fuel and longer pieces for making fences.
B. Protection.
C. Force.
D. Harvest.
B. To keep water in their fields.
C. To prevent their soil blowing away and wind destroying the crops.
D. To get more trees.
B. One with plants which have many leaves.
C. One with certain breaks between trees and plants.
D. One with as many trees or plants as possible.
B. To tell us how to get a higher harvest.
C. To let us know there are usually windbreaks around the fields.
D. To tell us how important it is to keep soil and crops.
There were many horror stories in the 19th century about crazy (疯狂的) doctors who took a part of one
man"s body and put it in that of another man"s. The writers did not think it was possible, but in today"s world
it is possible with some parts of the body-hearts, for example. But how far can this go in the future? Will
people be able to have new arms or legs, or even heads? It may not be crazy. We already have heart transplants
(移植), and artificial (人造的; 假的) arms, legs and hands. We have artificial muscles (肌肉) that use air to
move. We have computers which we put inside people to help make their bodies work. We can make artificial
ears, artificial eyes like small television cameras, and artificial throats, which make voices like the real thing. Mr.
White, a professor in a university in the United States says it will not be long before we have head transplants.
"We can do this with the technology (技术) we have now. There is only one big problem-when we cut off
the old head, the nerves (神经) which join the rest of the body to the head is also cut and broken. The new head
could hear and see, but body could not move. But in the future, scientists will be able to make the head grow its
own nerves and join itself to the nerves in the body, like a plant grows into the soil."
When will all this happen? In a few hundred years perhaps, says Professor White, who also says that his
ideas are as crazy as the ideas of the man who said a hundred years ago that it was possible to walk on the
moon.
B. it was impossible to have transplants
C. some crazy doctors killed a lot of people
D. some crazy doctors injured a lot of people
B. is being studied by scientists
C. is being found out
D. hasn"t been found out yet
B. scientists can complete heart transplants and many other sophisticated (复杂的) operations.
C. scientists can easily complete head transplants
D. it will not be long before heart transplants can be done
B. nobody has done such an operation before
C. no doctor would do such a terrible operation
D. the way to connect the new head"s nerves with the old body"s has not been found out yet
TUVALU, a tiny country in the Pacific Ocean, has asked for help as it will be swallowed up by the sea.
Storms and huge waves are a constant threat and none of Tuvalu"s nine little islands is more than five
meters above the sea level. Salt water is already entering the country"s drinking water supply, as well as
damaging plants that produce fruit and vegetables. Without urgent help, the country"s days are numbered.
But Tuvalu is not the first place to face sinking into the sea. Venice, a historic city in Italy best known
for its canals, has sunk about 24 cm over the past 100 years. Experts say that it will have sunk another 20-
50cm by 2050. A century ago, St. Mark"s Square, the lowest point city, flooded about nine times a year.
Nowadays, it happens more than 100 times. While Venice is slowly sinking into the mud on which it stands,
global warming causes Tuvalu"s rising sea level.
The average global temperature has increased by almost 0.5 centigrade degrees over the past century;
scientists expect it rise by extra l-3 degrees over the next 100 years.
Warmer weather makes glaciers (冰川) melt, adding more water to the ocean. The warmer temperatures
also make water expand, so it takes up more space, causing the sea level to rise. The sea level has risen about
10-25 cm in the last 100 years.
The main cause of global warming is human pollution. Through burning coal, oil and gas, people have
been increasing the green-house gases in the atmosphere, such as CO2. This adds to the power of the
greenhouse effect, making the planet even warmer.
Many scientists believe that, if the warming is not stopped, there will be huge climate changes. The sea
level could rise by one meter this century.
Should this come true-the sea will swallow up millions of homes and the world will be flooded with
"climate refugees" looking for somewhere to live?
B. all Tuvalu"s islands are about five meters above the sea level
C. drinking water in Tuvalu has been destroyed
D. Tuvalu is often flooded by storms and waves
B. they are both sinking into the mud where they stand
C. they will disappear in the future
D. their trouble is caused by global warming
a. Glaciers began to melt.
b. People bum coal, oil and gas.
c. The greenhouse effect is growing.
d. The earth is getting warmer and warmer.
e. The sea level is rising.
f. More CO2 is produced.
g. Many places are sinking into the sea.
B. b,f,c,d,e,a,g
C. f,c,b,d,a,e,g
D. b,f,c,d,a,e,g
B. Climate changes.
C. Rare animals.
D. Climate effect.
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