高三英语练习14
Annealing
Annealing is a way of making metal softer by heating it and then letting it cool very slowly. If metal is heated and then cooled very quickly, for example by dipping (浸)it in water, it will be very hard but also very brittle(脆)—that is, It will break easily. Metal that has been annealed is soft but does not break as easily. It is possible to make metal as hard or as soft as is wished, by annealing it. The metal is heated, and allowed to cool slowly, for a certain length of time. The longer the heated metal takes to cool slowly, the softer it becomes. Annealing can also be used on other materials, such as glass.
70.Annealing can make metal
A.hard and tough(韧). B.hard but brittle.
C.soft but tough. D.soft and brittle.
71.Why do people put hot metal in water?
A.To make it hard. B.To make it soft.
C.To make it cool. D.To make it brittle.
72.In annealing, the required hardness of a metal depends on
A.the quantity of water used.
B.the temperature of the metal.
C.the softness of the metal.
D.the timing of the operation.
73.As suggested by the text, how can glass be made less brittle?
A.It can be heated and then cooled quickly.
B.It can be cooled and then heated slowly.
C.It can be heated and then cooled slowly.
D.It can be cooled and then heated quickly.
92D
The basenji is a central African hunting dog. It comes from a country called Chad, which is north of the Central African Republic. The basenji was well-known as the "silent dog" because for centuries no basenjis had ever been known to bark (吠). Then at a dog show in London in 1953, a basenji actually barked.
As well as being clever,basenjis are known for their natural courage and are still popular hunting dogs in Africa. But in America people keep them mainly because they are gentle and full of fun. The basenji has an unusual habit:it washes itself all over like a cat. It is a middle-sized dog, 16 or 17 inches high from the shoulder. It weighs about 20 pounds. A basenji's coat is short and silky.It may be brown, white, or gold ,or a mixture of these three colours.
81. Basenjis were first found .
A. in Africa, Europe and America
B. in both Africa and America
C. in central Africa
D. in North Africa
82. What made basenjis so special?
A. They were funny enough to make people laugh.
B. One of them barked at a dog show in London.
C. They were a true friend of man.
D. They were born quiet dogs.
83. Americans like basenjis because they are .
A. pleasant
B. Pretty
C. clean
D. quiet
84. In what way are basenjis like cats?
A. They make gentle sounds instead of barking
B. They are fond of people and look like cats.
C. They clean themselves all over.
D. They have short, silky fur.
85. Basenjis are good hunters because they are .
A. strong
B. fearless
C. the right colour
D. the right weight
93C
For thousands of years, man has enjoyed the taste of apples. Apples, which are about 85 percent water, grow almost everywhere in the world but the hottest and coldest areas (地区). Among the leading countries in apple production are China, France and the United States.
There are various kinds of apples, but a very few make up the majority of those grown for sale . The three most common kinds grown in the United States are Delicious, Golden Delicious, and Mcintosh.
Apples are different in colour, size, and taste . The colour of the skin may be red, green, or yellow. They have various sizes, with Delicious apples being among the largest. The taste may be sweet or tart(酸的). Generally, sweet apples are eaten fresh while tart apples are used to make applesauce(苹果酱).
Apple trees may grow as tall as twelve metres . They do best in areas that have very cold winters. Although no fruit is yielded during the winter, this cold period is good for the tree.
70. It can be learned from the text that Delicious apples are
A. grown in France B. sold everywhere
C. very big D. quite sweet
71. Cold winter weather is good for ___.
A. the growth of apple trees
B. producing large apples
C. improving the taste of apples
D. the increase of water in apples
72. China, France and the United States are considered to ___.
A. be large producers of apples
B. be large producers of applesauce
C. have the longest history in apple production
D. have the coldest winter among apple producing countries
73. The word yielded in the last sentence means ___.
A. improved B. increased
C. produced D. sold
94B
Do you always understand the directions on a bottle of medicine?Do
you know what is meant by "Take only as directed"? Read the following
directions and see if you understand them.
"To reduce pain, take two tablets(药片)with water, followeed by one tablet every eight hours, as required.
For night-time and early morning relief(缓解疼痛)take two
tablets at bedtime. Do not take more than six tablets in twenty-four hours.
For children six to twelve years old, give half the amount(量). For children under six years old ,ask for your doctor's advice.
Reduce the amount if you suffer from restlessness or
sleeplessness after taking the medicine".
65.How many tablets at most can a person over 12 have
in 24 hours?
A.Three B.Four C.Six D.Eight
66.How many tablets should a nine-year-old child
normally take in 24 hours?
A.Half a tablet.
B.One tablet.
C.Two tablets.
D.Four tablets.
67.What is the advice for one who cannot sleep well
after taking the medicine?
A.Stop taking the medicine at bedtime.
B.Continue to take the normal amount.
C.Take more than the normal amount.
D.Take less than the normal amount.
68.It can be inferred from the directions that this
medicine.
A.helps you to fall asleep quickly
B.may be dangerous to small children
C.cannot be taken if one feels sleepy
D.should not be taken by children under six
69.This text is most probably taken from a .
A.textbook
B.newsreel
C.doctor's notebook D.bottle
of medicine
94D
There are different ways in which people try to deal with the
problem of energy. One way is the greater production of common energy sources(能源), such as coal, oil and gas. The trouble with these sources,
however, is that they are not renewable.
Another way is energy conservation(节能), which means using energy more efficiently(有效地). In some very cold countries people build special houses to save energy.
They place materials between the inside and the outside of the walls of the
house to keep the cold out and the warmth in. The house is heated by the
lights, the body heat of the people and the other equipment in it.
Finally, renewable energy sources are used even
though they are often expensive to develop. One form of these is geothermal
energy. In certain parts of the world the temperature of the earth increases
thirty degrees centigrade with each kilometre down. At six kilometres,
therefore, it rises to nearly two hundred degrees. To get the heat, water is
pumped(压;抽)down into the rocks
and back up to the surface. Heat from the earth is already used in certain
countries.
75.How many ways of dealing with the energy problem
are discussed in the text?
A.Two B.Three
C.Four D.Five.
76.From the text we learn that coal .
A.is quite easy to produce
B.is not used most efficiently
C.is the most common source of energy
D.could be renewed only by new technology
77.The writer tells about the "special
houses" because they
A.show the excellent skills of the builders
B.serve as an example of energy conservation
C.are heated by different sources of energy
D.are warmer than other types of houses
78.The underlined words geothermal energy in the
third paragraph mean .
A.renewable source B.underground
source
C.heat inside the earth D.temperature of the earth
79.Which of the following drawings shows the right
way to get geothermal energy?
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80.At a place where the surface
temperature is 15℃, how deep do you have to dig so
as to get a temperature of 75℃?
A.One km. B.Two
km.
C.Three km. D.Four
km.
95A
Fat on human beings is distributed(分布)in
different ways. Some fat people have a large stomach and no waistline—which makes them look round, rather like apples. Others are fatter
below the waist, which makes them appear pear-shaped(梨形的).
There are two types of fat: external fat (fat under
the skin)and internal fat (fat inside the boby wall). Doctors,who have been
examining the relationship between health and fatness,have found that the
`pears'have less internal fat, but the `apples'have more internal fat than
external fat. This seems to be what causes the health problems.
The best treatment for fatness is to reduce the
internal fat. But unfortunately it seems that dieting(节食)simply makes an apple-shaped person into a smaller apple and a
pear-shaped person into a smaller pear. At the moment there is no known way of
reducing the internal rather than external fat.
61.The text is mainly about .
A.fatness and health B.ways to lose
weigh
C.people's figures D.distribution
of fat
62.Which of the following people is most likely to have health problems?
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|
63.When a pear-shaped person becomes thinner,
he/she loses more .
A.internal fat than external fat
B.external fat than internal fat
C.fat above the waist
D.fat below the waist
95C
The idea of fighting a noise by making more noise
sounds strange , but that's exactly what motor engineers are doing in Germany
and some other countries.
Carmakers'research and development laboratories have
already proved that mixing in more noise with the help of loudspeakers can
reduce the unwanted noise.
Physicists have known about the technique for a long time.
Sound is made up of pressure waves in the air. If two sound waves of the same
frequency(频率)mix so that the highest point of one wave
happens at the same time with the lowest point of the other wave, the result is
no sound. Therefore, by producing a perfect copy of the noise and delaying it
by half a wave cycle(周期), we can kill the unwanted
noise. Using this technique many carmakers are racing to develop noise-killing
systems both inside and outside the cars.
Another good thing about the use of noise-killing
systems is that it saves the need for a silencer, which not only reduces the
weight of a car, but also makes the motor burn less oil and work better.
Some engineers believe that the noise-killing system
will be used in most cars in 1996. But the carmakers haven't decided if they
will put it into production because it would add several hundred dollars to the
cost of their cars.
67.Which of the following gives a general idea of how the noise-killing system
works?
A.By producing pressure waves going in the opposite
direction.
B.By mixing high frequency sound waves with low
frequency sound waves.
C.By making copies of the unwanted sound waves and
letting them out a little later.
D.By mixing new sound waves with the noise and
sending them out together.
68.Besides its main function(功能)the noise-killing
system can .
A.make a car lighter
B.make a car quieter
C.reduce the cost of a silencer
D.improve the performance of a silencer
69.The noise-killing system is not yet popular mainly because .
A.it increases the cost of car production
B.carmakers are not sure if it is necessary
C.it is still being tried out
D.people still have their doubts
E
During the summer holidays there will be a revised(修改过的)schedule(时刻表) of services for the students.Changes
for dining-room and library service hours and for bus schedules will be posted
on the wall outside of the dining-hall. Weekly film and concert schedules,
which are being arranged(安排), will be posted each
Wednesday outside of the student club.
In the summer holidays, buses going to the town
center will leave the main hall every hour on the half hour during the day. The
dining-room will serve three meals a day from 7:00 am to 7:00 pm during the
week and two meals from noon to 7:00 pm on weekends.The library will continue
its usual hours during the week, but have shorter hours on Saturdays and
Sundays. The weekend hours are from noon to 5:00 pm.
All students who want to use the library borrowing
services must have a new summer card. This announcement will also appear in the
next week's student newspaper.
76.The main purpose of this announcement is to .
A.tell students of important schedule changes
B.tell students of new bus and library services
C.show the excellent services for students
D.ask students to renew their library cards
77.At which of the following times will the bus leave the main hall?
A.8:00, 9:00, 10:00, 11:00
B.8:00, 9:30, 10:30, 11:30
C.8:30, 9:00, 9:30, 10:00
D.8:00, 9:30, 11:00, 12:30
78.Times for films and concerts are not listed in this announcement because .
A.they are not to be announced
B.they are hard to arrange
C.the full list is not ready
D.the full list is too long
79.In the summer holidays, the library will have .
A.no special hours
B.special hours on weekdays
C.special hours on weekends
D.special hours both on weekdays and weekends.
80.We may infer that during the summer holidays .
A.the student newspaper will sell more copies
B.there will be a concert or a film once a week
C.many students will stay in the university
D.no breakfast will be served on weekends
96上海(B)
When did you last see a polar bear(北极熊)?On a trip to a zoo, perhaps?If you had attended a winter activity in New York a few years ago, you would have seen a whole polar bear club. These "Polar Bears" are people who meet frequently in the winter to swim in freezing cold water.That day, the air temperature was 3℃, and the water temperature was a bit higher. The members of the Polar Bear Club at Coney Island, New York are usually about the age of 60. Members must satisfy two requirements. First, they must get along well with everyone else in the group, this is very important because there are so many different kinds of people in the club. Polar Bears must also agree to swim outdoors at least twice a month from November through February.
Doctors do not agree about the medical effects of cold-water swimming. Some are worried about the dangers of a condition in which the body's temperature drops so low that finally the heart stops. Other doctors, however, point out that there is more danger of a heart attack during summer swimming because the difference between the air temperature and water temperature is much greater in summer than in winter.
The Polar Bears themselves are satisfied with the benefits (or advantages)of cold-water swimming. They say that their favorite form of exercise is very good for the circulatory system(循环系统)because it forces the blood to move fast to keep the body warm. Cold-water swimmers usually turn bright red after a few minutes in the water. A person who turns blue probably has a very poor circulatory system and should not try cold-water swimming.
The main benefits(or advantages)of cold-water swimming are probably mental. The Polar Bears love to swim year-round;they find it fun and relaxing. As one 70-year-old woman says. "When I go into the water, I pour my troubles into the ocean and let them float away."
71. The members of the Polar Bear Club must meet the following requirements except that_____ .
A. they should be easy to make friends with
B. they must swim outdoors at least 8 times in the four cold months
C. they must agree to swim outdoors from November through February
D. they must reach the age of 60
72. Doctors _____ .
A. encourage people to take part in cold-water swimming actively
B. point out the possible danger of blood illness during cold-water swimming
C. believe swimming is helpful both in winter and in summer
D. have different ideas about the medical effects of cold-water swimming
73. According to the passage, some doctors believe it is true that _____ .
A. you are healthy if cold-water swimming turns your skin color blue
B. cold-water swimming causes more heart attacks in summer than in winter
C. cold-water swimming can make the body temperature dangerously high
D. Polar Bears are bears swimming in freezing water
74. The Polar Bears like to swim all the year round,for _____ .
A. they can remain young
B. it is an easy way to keep the body warm in winter
C. they find it enjoyable and interesting
D. they might meet fewer troubles in life
75. The passage is mainly about _____ .
A. a group of cold-water swimming lovers
B. the Polar Bears' life in New York
C. doctors' ideas about cold-water swimming
D. the requirements of the Polar Bear Club
96上海C
Farmer Ed Rawlings smiles as he looks at his orange trees. The young oranges are growing well in Florida's weather. Warm sunshine and gentle rains, along with Ed Rawlings'expert care, will produce a good crop of oranges this year.
But Ed has to fight against Florida's changeable winter weather. In January and February, temperatures can destroy Ed's entire orange, crop. Having farmed in Florida for the past 35 years, Ed Rawlings is prepared for the frosts(霜). When temperatures drop below freezing， Ed tries to save his crop by watering his orange trees. The water freezes and forms a thin layer (层)of ice on the trees. Strange as it may sound, this thin layer of ice actually keeps the fruit warm.
What happens is simple. When the trees are watered, the water loses heat and becomes ice. The warmth of the heat it loses is sucked in by the fruit and keeps its temperature at a safe level. Ed Rawlings has effectively used this method(方法)to save many orange crops.
But Ed still faces some difficulties. The trees should be watered at the exact moment the temperature drops to the freezing point. Also, just the right quantity of water must be used. Too much water can form a thick layer of ice that will break the trees'branches. Another difficulty is that wind blows away the heat. So Ed has to worry about not only when but also how often his trees should be watered, and how much water should be used.
Computer technology may help Ed Rawlings with some of these worries. With equipment, air and soil temperatures and wind speed can be measured. The information is fed into a computer which can tell when temperatures drop to freezing. The computer can correctly decide the quantity of water to be used and how frequently the trees should be watered. Ed Rawlings will find looking after his orange trees a lot easier with the help of a computer, and we'll all have the benefits(or advantages)of computer-age oranges.
76. The passage is mainly about _____ .
A. a farmer's expert care for his orange trees
B. the different uses of computers
C. growing oranges in Florida's changeable weather
D. different ways of frost protection
77. Ed tried to protect his crop by _____ .
A. using a wind machine to drive away the cold air
B. equipping his orange trees with a computer
C. watering it at the proper time
D. picking his fruit at the first sign of frost
78. In the writer's eyes, computers _____ .
A. are too expensive for small farmers
B. can be a valuable tool for the farmer
C. can be used to help oranges grow bigger
D. cannot take the place of the farmer's experience and judgement
79. Which of the following is NOT NECESSARY for Ed Rawlings to do?
A. He should water the orange trees as soon as the temperature drops to the
freezing point.
B. He should decide the quantity of water for the orange trees.
C. He has to water the orange trees more often in January and February.
D. He has to judge how often he should water the orange trees.
80. According to the passage, the computer technology can _____ .
A. get rid of the need for frost protection
B. help the farmer get a better harvest
C. tell the farmer why outdoor temperature changes
D. prevent the temperature from dropping to the freezing point
99B
Computer people talk a lot about the need for other people to become "computer-literate." But not all experts (专家) agree that this is a good idea.
One ploneer,in particular,who disagrees is David Tebbutt,the founder of Computertown
UK. Although many people see this as a successful attempt to bring people closer to the computer.David does not see it that way.He says that Computertown UK was formed for just the opposite reason,to bring computers to people and make them"people-literate."
David Tebbutt thinks Computertowns are most successful when tied to a computer club but he insists there is an important difference between the two,The clubs are for people who have some computer knowledge already.This frightens away non-experts,who are happier going to Computertowns where there are computers for them to experiment on.with experts to encourage them and answer any questions they have,They are not told what to do.they find out.The computer experts have to learn not to tell people about computers.but have to be able to answer all questions people ask.People don't have to learn computer terms(术语), but the experts have to expla in plain language. The computers are becoming "peoPle-literate."
56. Which of the following is David Tebbutt's ides on the relationship between people and
computers?
A.Computer learning should be made easier.
B.There should be more computer clubs for experts.
C.People should work harder to master computer use.
D.Computers should be made cheaper so that people can afford them.
57.We can infer from the text that "computer-lilerate" means＿＿＿＿＿
A. being able to afford a computer
B.being able to write computer programs
C. working with the computer and finding out its value
D. understanding the computer and knowing how to use it
58. The underlined word "it" in the second paragraph refers to the idea that Computertowns
＿＿＿＿＿．
A.help to set up more computer clubs
B.bring people to learn to use computers
C. bring more experts to work together
D. help to sell computers to the public
59. David Tebbutt started Computertown UK with the purpose of＿＿＿＿＿
A. making better use of computer experts
B. improving computer programs
C.increasing computer saies
D. popularising computers