精英家教网 > 高中英语 > 题目详情

A mobile phone is no longer just a phone -- it is also a music player, video camera and personal organizer. And mobile phones with television programming are just around the corner. But the more functions cell phone manufacturers add, the greater the amount of power the phones use and the less practical running them on lithium (锂) batteries becomes -- so the race to find a viable alternative is on.
Two of the world's biggest electronics makers, Hitachi and Toshiba, are currently competing against each other to come up with an alternative, most likely to be micro fuel cells. The task has been set by Japan's second largest mobile phone provider, KDDI, which wants its customers to soon be able to use special television programming on their handsets, and has asked the two electronics companies to come up with a better power source. Hitomi Murakami, of KDDI, says battery-operated mobile phones cannot keep up with the new applications. "We're looking at various ways to expand content and services that we can provide to the people. And we don't want to have battery issues delaying us from doing that," he says.
Hitachi's Atsushi Morihara says it is a critical race for both of the companies as the resulting product will have a major impact on the mobile market in the future. "We are in competition and it's up to both of us to come up with a good product. A product that will satisfy KDDI's needs. I think I can go as far to say that the winner will take all."
Miniaturized direct methanol (甲醇) fuel cells are different batteries in that they create power instead of simply storing it. That power is made by new technology utilizing cheap methanol. If all gees to plan, come 2007, Japanese phone users will not use an electric charger to power their mobiles, they will instead carry a small bottle of methanol and with just a few squirts, they will have power for their phones. But the method has its downsides, including how passengers will be able to take small mounts of flammable methanol on airliners. Fumio Ueno of Toshiba says that once developed, the uses of miniaturized direct methanol fuel cells have endless possibilities.
小题1:The lithium batteries are becoming improper for the cell phone because ______.
A.there is a television in the phoneB.it is inconvenient to use
C.it can't provide enough powerD.people have found substitutes
小题2:According to the passage, Toshiba ______.
A.is in critical competition with KDDI
B.will probably beat its rival
C.attaches great importance to methanol fuel
D.is one of the largest battery provider
小题3:Which of the following is NOT the characteristic of methanol fuel?
A.Easy to catch fire.B.Portable.
C.Inexpensive.D.Available everywhere.
小题4:The best title for the passage is ______.
A.Search for better phone power.
B.Development of cell phone battery.
C.Competition between two electronic firms.
D.Advantage and disadvantage of methanol fuel.

小题1:B
小题2:C
小题3:D
小题4:A

小题1:本题问“为什么锂电变得越来越不适合手机使用?”文章第一段中第三句提到“But the more functions cell phone manufacturers add,the greater the amount of power the phones use and the less practical running them on lithium batteries becomes”也就是说,生产商给移动电话附加的功能越多,电话所需要的能量越大,所以锂电就越来越缺乏实用性。由此可知B“它不能够提供足够的能量”正确。
A“正电话上有电视”。文中是说“television program”,而不是电视机。
C“它不方便使用”。文中只说“... the less practical running them on lithium batteries becomes”,与不方便使用的意思不同。
D“人们已经找到了替代物”。两家公司还在研究,尚未找到合适的替代物。
小题2:本题问“根据文章内容,可以对东芝公司做出怎样的推断?”文章最后一段中的最后一句提到“Fumio Ueno of Toshiba says that once developed,the uses of miniaturized direct methanol fuel cells have endless possibilities.”也就是说,东芝公司认为这种替代物一旦被开发出来,甲醇燃料将会有很大的潜力。也就是说东芝公司对这项发明很重视。所以C“东芝对开发甲醛燃料非常重视”正确。
A“与KDDI公司竞争很激烈”。文中是说“Japan's second largest mobile phone provider,KDDI”,即KDDI公司是日本第二大手机供应商,而不是生产商,所以他们之间不存在激烈竞争。
B“将会击败对手”。文中未提及。
D“东芝是最大的电池供应商之一”。文章只提到了它是“electronics makers”,即最大的电器制造商,是否为最大的电池供应商文中未提及。
小题3:本题问“下面哪一项不属于甲醇燃料的特点?”综合全文内容,可以判断D“可以随处得到不属于甲醛的特性”,文中没有相关的阐述,为本题的答案。
A“易燃”。文章最后一段中的后半部分提到“how passengers will be able to take small amounts of flammable methanol on airliners.”也就是说,甲醇是易燃的。
B“便宜”。文中最后一段提到“利用新的技术将便宜的甲醇制成能源,”由此可知,甲醛的价格不高。
C“可携带”。文章最后一段提到了“Japanese phone users will not use an electric charger to power their mobiles. they will instead carry a small bottle of methanol”(日本手机使用者将不用携带充电器了,而是拿一小瓶甲醇),这说明甲醛可以携带。
小题4:本题问“文章最好的题目是哪项?”文章的开头就提到“But the more functions cell phone manufacturers add, the greater the amount of power the phones use and the less practical running them on lithium batteries becomes— so the race to find a viable alternative is on.”也就是说,手机功能越多,它所需要的能量也就越多,所以当今的锂电电池就不能满足需要,需要发明一种替代物。后文的内容均与此话题相关。所以A“寻找更好的手机能源”正确。
B“手机电池的发展”。文中未提到手机电池的发展历史和过程。
C“两家电器公司的竞争”。两家公司竞争的原因也是想尽早发明这种新型电池。
D“甲醇燃料的优缺点”。相关内容文中虽有提及,但不是文章的中心内容。
练习册系列答案
相关习题

科目:高中英语 来源:不详 题型:阅读理解


A
Insomnia is the inability to fall asleep or sleep restfully. It is a problem to nearly everyone at some time .A person may be awake for an hour in the middle of the night and then , next morning, feel that he hardly sleep all night Normally, worry about not getting enough sleep is the worst aspect of most insomnia. If insomnia is recurrent, however, it is important to find its causes and try to correct them, with the help of a doctor if necessary.
Any of a large number of simple factors may take it difficult for someone to fall asleep or remain asleep. His matters may be too soft or too hard. If there are too many blankets on a hot night, he may be too warm; if the bedclothes are too light he may feel cold during the night. If it is not dark enough, or too noisy, this may cause difficulty in sleeping. Eating shortly before going to bed also be responsible for insomnia. Stimulating drinks, such as tea or coffee, can also keep people awake.
Inability to fall asleep is sometimes a symptom of emotional or mental disorders. Insomnia may also be caused by pain and, very rarely, it can be a symptom of a physical disease.
The cause of insomnia may be easy to correct. The sufferer should check the mattress, bedclothes and bedroom temperature, and make any necessary changes. An eye mask keeps out the night and ear-plugs shut out sound. He should relax for an hour or two before bedtime, perhaps by reading a book; watching TV, or taking a warm bath. If he wakes during the night he should try turning on the light and reading for a while. Taking warm milk and a biscuit or two may be helpful. Above all, he should try not to worry about sleeplessness when someone is tied enough he nearly always falls asleep.
If necessary, a doctor may prescribe tranquillizers or sleeping pills. Take only the dosage he prescribes; any more is dangerous.
1. According to the writer, insomnia is ______.
[ A ] a rare problem                 [ B ] a sign of illness
[ C ] a common complaint            [ D ] a modern disease
2. People who have difficulty sleeping should sleep in_____.
[ A ] a light room                   [ B ] a dark room
[ C ] a cold room                   [ D ] a warm room
3. Insomnia need’t be taken seriously because_______.
[ A ] people can catch on sleep during the day.
[ B ] many people sleep far too much.
[ C ]it can easily be cured by doctors.
[ D ]it is cured naturally by tiredness.
4. The main cure for insomnia is_____.
[ A ] not to read too much at night
[ B ]not to eat too much for supper
[ C ] not to watch too much television
[ D ] not to get too anxious about sleeping

查看答案和解析>>

科目:高中英语 来源:不详 题型:阅读理解

The question of what children learn, and how they should learn, is continually being debated and redebated. Nobody dares any longer to defend the old system, the learning of lessons parrot-fashion, the grammar-with-a-whip system, which was good enough for our grandparents. The theories of modem psychology have stepped in to argue that we must understand the need of children. Children are not just small adults; they are children who must be respected as much.
Well, you may say, this is as it should be, a good idea. But think further. What happens? "Education" becomes the responsibility not of teachers, but of psychologists (心里学家). What happens then? Teachers worry too much about the psychological implications (暗示) of their lessons, and forget about the subjects themselves. If a child dislikes a lesson, the teacher feels that it is his fault, not the child’s. So teachers worry whether history is "relevant" to modern young children. And do they dare to recount stories about violence? Or will this make the children themselves violent? Can they tell their classes about children of different races, or will this encourage racial hatred? Why teach children to write grammatical sentences? Verbal expression is better. Sums? Arithmetic? No: Real-life mathematical situations are more understandable.
You see, you can go too far. Influenced by educational theorists, who have nothing better to do than to write books about their ideas, teachers leave their teacher-training colleges filled with grand, psychological ideas about children and their needs. They make elaborate, sophisticated (精致的,复杂的) preparations and try out their "modem methods" on the long-suffering children. Since one "modem method" rapidly replaces another the poor kids will have had a good bellyful by the time they leave school. Frequently the modem methods are so sophisticated that they fail to be understood by the teachers, let alone the children; even more often, the relaxed discipline so essential for the " informal" feelings the class must have, prevents all but a handful of children from learning anything.
8. People do not dare defend the old system mainly because under the old system________.
A. too much grammar was taught to children     B. children were spoiled (宠坏)
C. children were treated as grown-ups          D. children were made to learn passively(被动的)
9. What view do the modem psychologists hold?
A. Children must be understood and respected.
B. Children are small adults and know what they need.
C. Children are better off without learning lessons.
D. Education of children is the responsibility of psychologists.
10. What happens when teachers pay too much attention to the psychology of their lessons?
A. They find that the children dislike the lessons.
B. They tend to blame students for their failure.
C. They do not pay enough attention to the actual lessons.
D. They no longer want to teach children history.
11. Grammatical sentences are regarded as unimportant because ________.
A. it is better to use verbs only
B. words are said out of natural feelings only
C. talking freely and naturally without sentences is a better form of expression
D. it is felt that formal grammar rules might cause unnatural expressions
12. According to the passage, the modern methods are understood by ________.
A. neither teachers nor pupils      B. only a handful of teachers and pupils
C. the more sophisticated teachers  D. everyone who enjoys the relaxed discipline of the informal classes

查看答案和解析>>

科目:高中英语 来源:不详 题型:阅读理解

GET YOUR DEGREE AT HOME!
Have you ever wondered what a Degree might be worth to you in your job or career(事业)? It means a lot of Americans with an Associate Degree average nearly $10,000 more in yearly earnings than those with just a High School Diploma(毕业证).
Harcourt Learning Direct offers you a way to get a Specialized Associate Degree in 11 of today’s growing fields-without having to go to college full time. With Harcourt, you study at home, in your spare time-so you don’t have to give up your present job while you train for a better one. Choose from exciting majors like Business Management, Accounting, Dressmaking &Design, Bookkeeping, Photography, Computer Science, Engineering, and more! Your training includes everything you need! Books, lessons, learning aids-even professional-quality tools and equipment-everything you need to master your training and more ahead to a new career is included in the low tuition(学费) price you pay. Your education is nationally recognized! Nearly 2, 000 American companies-including General Electric, IBM, Mobile, General Motors, Ford, and many others-have used our training for their employees. If companies like these recognize the value of our training, you can be sure that employees in your area will, too!
Earn your degree in as little as two years! Get a career diploma in just six months! The career of your dreams is closer than you think! Even if you have no experience before, you can get valuable job skills in today’s hottest fields! Step-by-step lessons make learning easy. Prepare for promotions(提升), pay raises, even start a business of your own! Send today for FREE information about Harcourt at home training!
Simply fill in your name and address on the coupon(票券) above. Then write in the name and number of the one program you’re most interested in, and mail it today. We’ll rush your free information about how you can take advantage of the opportunities(机会) in the field you’ve chosen. Act today!
Mail coupon today! Or call the number below 1-800-372-1589. Call any time, 24 hours a day, 7 days a week. www. Harcourt-learning. com E-mail:Harcourt@learning. com.
1. This advertisement aims at calling on people to ________.
A. attend full-time universities                      B. work part time to further their education
C. improve their education at home to get better jobs   D. earn their degrees in different ways that suit them
2. Which of the following is NOT clearly mentioned in this advertisement? 
A. The way how you will get your degree.        B. Tuition price. 
C. The hot fields you will be preparing yourself for.  D. The length of time it will take you to get a degree.
3. What does the writer of this ad intend to say by naming General Electric, IBM, Ford, etc.?
A. To show that their training is widely used in the country. 
B. To show that the training program is fully supported by famous companies in the U. S.
C. To prove the value of their training in every area.  
D. To show the importance of getting recognized by the most famous companies.
4. It seems to the writer that the greatest attraction for people to take their training is______. 
A. its convenience                           B. the degree’s nation-wide recognition
C. the economic benefit(利益) it will bring about  D. the hot fields the training will help people to enter
5. How many ways are mentioned in the ad for people to get in touch with the Harcourt Learning Direct?
A. One.       B. Two.       C. Three.      D. Four.

查看答案和解析>>

科目:高中英语 来源:不详 题型:阅读理解

In the atmosphere, carbon dioxide acts rather like a one-way mirror or the glass in the roof of a greenhouse which allows the sun's rays to enter but prevents the heat from escaping.
   According to a weather expert' s prediction, the atmosphere will be 3℃ warmer in the year 2050 than it is today, if man continues to burn fuels at the present rate. If this warming up took place, the ice caps in the poles would begin to melt, thus raising sea level several metres and severely flooding coastal cities. Also, the increase in atmospheric temperature would lead to great changes in the climate of the northern hemisphere (北半球), possibly resulting in an alteration of the earth's chief food growing zones.
    In the past, concern about a man-made warming of the earth has concentrated on the Arctic because the Antarctic is much colder and has a much thicker ice sheet. But the weather experts are now paying more attention to West Antarctic, which may be affected by only a few degrees of warming, in other words, by a warming on the scale that will possibly take place in the next fifty years from the burning of fuels.
    Satellite pictures show that large areas of Antarctic ice are already disappearing. The evidence available suggests that a warming has taken place. This fits the theory that carbon dioxide warms the earth.
    However, most of the fuel is burnt in the northern hemisphere, where temperatures seem to be falling. Scientists conclude , therefore, that up to now natural influences on the weather have gone beyond those caused by man. The question is: Which natural cause has most effect on the weather?
    One possibility is the variable behavior of the sun. Astronomers at one research station have studied the hot spots and "cold" spots (that is, the relatively less hot spots) on the sun. As the sun rotates (使旋转), every 27. 5 days, it presents hotter or "colder" faces to the earth, and different aspects to different parts of the earth. This seems to have a considerable effect on the distribution of the earth's atmospheric pressure, and consequently on wind circulation. The sun is also changeable over a long term: its heat output goes up and down in cycles, the latest trend being downward.
    Scientists are now finding shared relations between models of solar weather interactions and the actual climate over many thousands of years, including the last Ice Age. The problem is that the models are predicting that the world should be entering a new Ice Age and it is not. One way of solving this theoretical difficulty is to assume a delay of thousands of years while the solar effects overcome the inertia (惯性) of the earth's climate. If this is right, the warming effect of carbon dioxide might thus be serving as a useful opposed balance to the sun's fading heat .
66. It can be concluded that a concentration of carbon dioxide in the atmosphere would_________.
A. mean a warming-up in the Antarctic
B. raise the temperature of the earth' s surface
C. prevent the sun's rays from reaching the earth's surface
D. explain the cause of  great changes in the climate in the northern hemisphere
67.The article was written to explain ___________. 
A. the greenhouse effect
B. the solar effects on the earth
C. the causes affecting weather
D. the models of solar-weather interactions
68. Although the fuel consumption is greater in the northern hemisphere, temperatures there seem to be falling. This is__________.
A. mainly because the levels of carbon dioxide are rising
B. partly due to changes in the output of solar energy
C. possibly because the ice caps in the poles are melting
D. only due to the effect of the inertia of the earth' s climate
69. On the basis of their models, scientists believe the opinion that__________.
A. the climate of the world should be becoming cooler
B. the new Ice Age will be delayed by the greenhouse effect
C. the man-made warming effect helps to increase the solar effects
D. it will take thousands of years for the inertia of the earth's climate to take effect
70. If the assumption about the delay of a new Ice age is correct, ____________.
A. ice would soon cover the northern hemisphere
B. the greenhouse effect could work in favor of the earth
C. the best way to overcome the cooling effect would be to burn more fuels
D. the increased levels of carbon dioxide in the atmosphere could warm up the earth even more quickly

查看答案和解析>>

科目:高中英语 来源:不详 题型:阅读理解


E
Most of us are used to seasons. Each year, spring follows winter, which follows autumn, which follows summer, which follows spring. And winter is colder than summer. But the earth goes through temperature cycles over much longer periods than those that we experience.
Between 65,000 and 35,000 years ago, the planet was much colder than it is now. During that time the temperature also changed a lot, with periods of warming and cooling. Ice melted during the warm periods, which made sea levels rise. Water froze again during the cold periods.
A new study from Switzerland sheds light on where ice sheets melted during the ice age.
It now seems that the ice melted at both ends of the earth, rather than just in either northern or southern areas. This surprised the researchers from the University of Bern.
Scientists have long assumed(认为) that most of the ice that melted was in the Northern hemisphere(半球) during the 30,000-year-long ice age. That belief was held because the North Pole is surrounded by land, while the South Pole is surrounded by the Antarctic Ocean. It is easier for ice sheets to grow on land. If surrounded by sea, the ice can easily just slip to the ocean instead of building up.
The researchers used a computer model to look at the ways the ice could melt and how it might affect sea levels. They compared these results to evidence(迹象) of how temperatures and currents actually changed during that time.
The model showed that if it was only in the Northern hemisphere that ice melted, there would be a bigger effect on ocean currents(洋流) and sea temperatures than what actually happened. Studies suggest that melting just in the Southern hemisphere would have been impossible, too.
The only reasonable conclusion, the scientists could make, was that the ice melted equally in the North and the South.
It is still a mystery(谜) as to what caused the temperature changes that caused the ice to melt.
72. We can learn from the text that _____.
A.we have experienced temperature cycles since they began
B.what caused ice to melt is still unknown
C. the planet was much colder than it is now between 65,000 and 35,000 years ago, during which time temperature hardly changed
D. before the new study, scientists long believed that ice melted just in either northern or southern areas
73. The underlined phrase "sheds light on" (in Paragraph 3) can be replaced by _____.
A. throws doubts on B. beats down on C. makes it clear D. makes light of
74. The first two paragraphs were written _____.
A. to lead up to the subject that ice melted during the 30,000-year-long ice age
B. to describe what the weather was like during the ice age
C. to compare climate nowadays with that of the ice age
D. to explain what a temperature cycle is
75. Which of the following best shows the relationship between ice, ocean currents and temperatures according to the text?
A. Ice can easily slip into the ocean.
B. Temperature and currents changed as a result of ice melting.
C. Temperature changes lead to ice melting or water freezing, which in turn has an effect on ocean currents and temperature.
D. Ice melted and then froze again due to temperature.

查看答案和解析>>

科目:高中英语 来源:不详 题型:阅读理解

For some people, the sight of a mouse can be reason to scream. For other mice, the same sight can be reason to sing.
Mice will probably   21  sing their way to any concert, but researchers in the United States have found   22  that mice do,   23 , sing.
Scientists already knew that mice make ultrasonic(超声波) sounds—noises that are too high-pitched(高音的) for people to hear   24  special equipment.
To find out whether mice put such sounds together in song-like   25 , the researchers recorded the sounds of 1 mice. Using computer   26 , they were able to separate the sounds into specific types of syllables(音节), and found the mice produced about 10 syllables per second.
The results showed that nearly all of the mice repeated sequences(顺序) of syllables in different patterns. That’s enough to meet the definition of what scientists   27  song. But not all scientists are   28  _ that what the mice are doing is   29  singing. To prove it, the researchers must show that there’s learning involved. And, they need to __  30  why the mice sing.
21. A. almost               B. even                C. never               D. usually
22. A. coincidence        B. evidence           C. guidance          D. instance
23. A. at once               B. by means          C. for example             D. in fact
24. A. during               B. inside               C. through            D. without
25. A. fashions             B. instructions        C. patterns            D. styles
26. A. access                B. printer                    C. screen               D. software
27. A. call                   B. hear                 C. sing                 D. write
28. A. accustomed        B. convinced         C. involved           D. qualified
29. A. actually                     B. obviously         C. simply                    D. unlikely
30. A. figure out          B. get about          C. run across         D. talk over

查看答案和解析>>

科目:高中英语 来源:不详 题型:阅读理解

How far would you be willing to go to satisfy your need to know? Far enough to find out your possibility of dying from a terrible disease? These days that’s more than an academic question,as Tracy Smith reports in our Cover Story.
There are now more than a thousand genetic(基因的)tests,for everything from baldness to breast cancer,and the list is growing.Question is do you really want to know what might eventually kill you? For instance,Nobel Prize-winning scientist James Watson,one of the first people to map their entire genetic makeup, is said to have asked not to be told if he were at a higher risk for  Alzheimer’(老年痴呆症).
“If I tell you that you have an increased risk of getting a terrible disease,that could weigh on your mind and make you anxious,through which you see the rest of your 1ife as you wait for that disease to hit you.It could really mess you up.”Said Dr.Robert Green,a Harvard geneticist.
“Every ache and pain,”Smith suggested,could be understood as“the beginning of the e nd.”“That’s right.If you ever worried you were at risk for Alzheimer's disease,then every time you can’t find your car in the parking lot,you think the disease has started.”
Dr.Green has been thinking about this issue for years.He led a study of people who wanted to know if they were at a higher genetic risk for Alzheimer’s.It was thought that people who got bad news would,for lack of a better medical term,freak out.But Green and his team found that there was “no significant difference”between how people handled good news and possibly the worst news of their lives.In fact,most people think they can handle it.People who ask for the information usually can handle the information,good or bad,said Green.
小题1:The first paragraph is meant to .
A.ask some questionsB.introduce the topic
C.satisfy readers,curiosity D.describe an academic fact
小题2:Which of the following is true of James Watson?
A.He is strongly in favor of the present genetic tests.
B.He is more likely to suffer from Alzheimer's disease.
C.He believes genetic mapping can help cure any disease.
D.He doesn’t want to know his chance of getting a disease.
小题3:According to Paragraphs 3 and 4,if a person is at a higher genetic risk,it is .
A.advisable not to let him know
B.impossible to hide his disease
C.better to inform him immediately
D.necessary to remove his anxiety
小题4:The underlined part“freak out”in Paragraph 5 is closest in meaning to .
A.break downB.drop outC.leave offD.turn away
小题5:The study led by Dr.Green indicates that people .
A.prefer to hear good newsB.tend to find out the truth
C.can accept some bad news D.have the right to be informed

查看答案和解析>>

科目:高中英语 来源:不详 题型:单选题

Parties and social gatherings no longer excite us the same way they once did. This is not due to a lack of desire to socialize, but the smartphone.
At parties, more people are on their smartphones than on their drinks. According to a recent International Data Corporation study, well over half of all Americans have a smartphone and reach for it the moment they wake up, keeping it in hand all day. In addition, too much of society is using smartphones while driving and as a result getting into car crashes. 34 percent of teens admit to text while driving, and they confirm that text messaging is their number one driving interruption. People's attachment to their smartphones is unbelievably becoming more important than the lives of themselves and others.
Just as drivers dismiss the importance of focusing while on the road, many people also fail to recognize the significance of human interaction. When with their friends, some people pointlessly check or send text messages in the presence of a friend, which sends a message to that friend: the person I am texting is more important than you. In addition, relying on our smartphone to make friends does not give us the same advantage as being able to make new friendships in the real world. Face-to-face conversations will give us much stronger communication skills in the long run.
As many people risk their lives and the lives of people around them just to send a text or mindlessly check their massages, smartphones are in many ways more dangerous to people. The quality of this technology is de-advancing societal achievements and weakening the value of communication. Not only is the smartphone affecting our desire to interact (交流) face-to-face but it is also lowering society's ability to communicate.
小题1:The purpose of this text is to ______.
A.call for an end to use the smartphone while driving
B.appeal to us to pay attention to communication skills
C.express a concern about the overuse of the smartphone
D.advise us to be cautious about the addiction to the smartphone
小题2:The second paragraph is developed by ______.
A.giving examplesB.listing figuresC.comparing facts D.analyzing the effects
小题3:The author advocates us to make new friends ______.
A.by using smartphones B.in a face-to-face way
C.in different waysD.under a free circumstance
小题4:Over dependence on the smartphone leads to the fact that ______.
A.parties and gatherings limit their social circle
B.people are more and more narrow-minded
C.people's communication skills are weakened
D.face-to-face communication becomes less important

查看答案和解析>>

同步练习册答案