Electrical devices(仪器)could soon use power made by human energy. Scientists say
they have developed an experimental device that produces electricity from the physical movement of a person walking. British scientist Max Donelan and other scientists in Canada and the United States developed the device.
The device connects to a person’s knee. As the person walks, the device captures energy each time the person slows down. To do this, the device helps with the slowing down movement of the leg. The movements of the walking person push parts of a small machine
that produces electricity. Using the device, an adult walking quickly could produce thirteen watts of electricity in just a minute. Donelan says walking at that speed could produce enough power to operate a laptop computer for six minutes.
There are several possible uses for the device. Developers say it could help people who work in areas without electricity to operate small computers. The device could also be used in hospitals to operate heart pacemakers(起搏器). It could even be used to assist in the movement of robotic arms and legs.
The experimental version of the device weighs about one and a half kilograms, but it is too costly for most people to buy. But the researchers hope to make a lighter, less costly version. An improved version shou1d be ready in one year.
The developers hope the device will one day help developing countries. Near1y twenty five percent of people around the world live without electric power.
A similar product was invented in 2005 by Larry Rome of the University of Pennsylvania. He created a bag carried on a person’s back that also produces power from wa1king.
The knee device does not produce as much electricity as the bag. But the bag requires the walker to carry a load of twenty to thirty kilograms.
【小题1】The second paragraph mainly talks about .
| A．who developed the device |
| B．how the device works |
| C．several possible uses for the devices |
| D．how much electricity the device can produce |
| A．It is too heavy for the walker to bear. |
| B．It is too complex for people to use. |
| C．It is too expensive for most people to afford. |
| D．It will slow down one’s walking speed. |
| A．produces power without adding more loads to the walker |
| B．can produce more power in a much shorter time |
| C．needs to be equipped with a battery |
| D．can help the walker wa1k faster |
| A．help housewives operate the washing machine |
| B．make it much easier for us to go online |
| C．produce more electricity than that invented by Larry Rome |
| D．be applied in medicine to operate heart pacemakers |
| A．First device powered by walking wi1l soon be on the market |
| B．Advanced technology brings in a new way to operate heart pacemakers |
| C．Device gives new meaning to the idea of power walking |
| D．Human energy will become a main source of electricity |
【小题1】B
【小题2】C
【小题3】A
【小题4】D
【小题5】C
解析试题分析：科学家研制出一种固定在人膝盖上的发电装置。这种装置可通过收集人走路时损失的能量发电。
【小题1】段落大意题。第二段主要讲了这种电子装置的工作原理，即它是如何利用人步行来发电的。故选B。
【小题2】细节推断题。根据第四段中的it is too costly for most people to buy可知这种实验版的设备费用太高，大多数人买不起。故选C。
【小题3】推理判断题。根据末段可知，过去Larry Rome发明的设备虽然也是靠行走获取能量，但是需要步行者背重达20到30公斤的负荷，而这种佩戴在膝盖上的设备重量只有1.5公斤，不需增加步行者的太多负担。故选A。
【小题4】细节理解题。根据文章第3段the device could also be used in hospitals to operate heart pacemakers可直接选出答案D项。A项文中没有涉及到，B项表述不科学，根据文章最后一段可以推断C项表述错误。故选D。
【小题5】归纳文章标题。文章主要突出的内容是这种新的电子设备使得利用人步行获取能量变得轻松、容易。故选C。
考点：科技说明类短文阅读
科目：高中英语 来源： 题型：阅读理解
Each time I see a balloon, my mind flies back to a memory of when I was a six-year-old girl. It was a rainy
Sunday and my father had recently died. I asked my mom if Dad had gone to heaven. "Yes, honey. Of course." she said.
"Can we write him a letter?"
She paused, the longest pause of my short life, and answered, "Yes."
My heart jumped. "How? Does the mailman go there?" I asked.
"No, but I have an idea." Mom drove to a party store and returned with a red balloon. I asked her what it was for.
"Just wait, honey. You'll see." Mom told me to write my letter. Eagerly, I got my favorite pen, and poured out my six-year-old heart in the form of blue ink. I wrote about my day, what I learned at school, how Mom was doing, and even about what happened in a story I had read. For a few minutes it was as if Dad were still alive. I gave the letter to Mom. She read it over, and a smile crossed her face.
She made a hole in the corner of the letter where she looped the balloon string. We went outside and she gave me the balloon. It was still raining.
"Okay, on the count of three, let go. One, two, three."
The balloon, carrying my letter, darted upward against the rain. We watched until it was swallowed by the mass of clouds.
Later I realized, like the balloon, that Dad had never let his sickness get him down. He was strong. No matter what he suffered, he'd persevere, dart up, and finally transcend this cold world and his sick body. He rose into sky and became something beautiful. I watched until the balloon disappeared into the gray and white and I prayed that his strength was hereditary. I prayed to be a balloon.
【小题1】When the girl asked her mother if they could write to her father, her mother _________.
| A．felt it hard to answer | B．thought her a creative girl |
| C．believed it easy to do so | D．found it easy to lie |
| A．jumped with joy |
| B．became excited |
| C．started writing immediately |
| D．was worried that it couldn't be delivered |
| A．An incurable disease. |
| B．An unforgettable memory. |
| C．The hard time her father had. |
| D．The failures her father experienced. |
| A．An unforgettable experience | B．The strong red balloon |
| C．Fly to paradise | D．A great father |
查看答案和解析>>
科目：高中英语 来源： 题型：阅读理解
My father was a foreman of a sugar-cane plantation in Rio Piedras, Puerto Rico. My first job was to drive the oxen that ploughed the cane fields. I would walk behind an ox, guiding him with a broomstick. For $ 1 a day, I worked eight hours straight, with no food breaks.
It was very tedious work, but it prepared me for life and taught me many lasting lessons. Because the plantation owners were always watching us, I had to be on time every day and work as hard as I could. I’ve never been late for any job since. I also learned about being respectful and faithful to the people you work for. More important, I earned my pay; it never entered my mind to say I was sick just because I didn’t want to work.
I was only six years old, but I was doing a man’s job. Our family needed every dollar we could make because my father never earned more than $ 18 a week. Our home was a three-room wood shack with a dirty floor and no toilet. Nothing made me prouder than bringing home money to help my mother, father, two brothers and three sisters. This gave me self-esteem(自尊心), one of the most important things a person can have.
When I was seven, I got work at a golf course near our house. My job was to stand down the fairway and spot the balls as they landed, so the golfers could find them. Losing a ball meant you were fired, so I never missed one. Some nights I would lie in bed and dreamt of making thousands of dollars by playing golf and being able to buy a bicycle.
The more I dreamed, the more I thought. Why not? I made my first golf club out of guava limb(番石榴树枝) and a piece of pipe. Then I hammered an empty tin can into the shape of a ball. And finally I dug two small holes in the ground and hit the ball back and forth. I practiced with the same devotion(热爱) and intensity(强度). I learned working in the field — except now I was driving golf balls with club, not oxen with a broomstick(帚柄).
【小题1】The writer’s first job was _______.
| A．to stand down the fairway at a golf course |
| B．to watch over the sugar-cane plantation |
| C．to drive the oxen that ploughed the cane fields |
| D．to spot the balls as they landed so the golfers could find them |
| A．difficult | B．boring |
| C．interesting | D．unusual |
| A．he should work for those who he liked most |
| B．he should work longer than what he was expected |
| C．he should never fail to say hello to his owner |
| D．he should be respectful and faithful to the people he worked for |
| A．Having a family of eight people |
| B．Owning his own golf course |
| C．Bringing money back home to help the family |
| D．Helping his father with the work on the plantation |
| A．He wanted to be a successful golfer. |
| B．He wanted to run a golf course near his house. |
| C．He was satisfied with the job he got on a plantation. |
| D．He wanted to make money by guiding oxen with a broomstick. |
查看答案和解析>>
科目：高中英语 来源： 题型：阅读理解
American is a mobile society. Friendships between Americans can be close and real, yet disappear soon if situations change. Neither side feels hurt by this. Both may exchange Christmas greetings for a year or two, perhaps a few letters for a while—then no more. If the same two people meet again by chance, even years later, they pick up the friendship. This can be quite difficult for us Chinese to understand, because friendships between us flower more slowly but then may become lifelong feelings, extending (延伸) sometimes deeply into both families.
Americans are ready to receive us foreigners at their homes, share their holidays, and their home life. They will enjoy welcoming us and be pleased if we accept their hospitality (好客) easily.
Another difficult point for us Chinese to understand Americans is that although they include us warmly in their personal everyday lives, they don’t show their politeness to us if it requires a great deal of time. This is usually the opposite of the practice in our country where we may be generous with our time. Sometimes, we, as hosts, will appear at airports even in the middle of the night to meet a friend. We may take days off to act as guides to our foreign friends. The Americans, however, express their welcome usually at homes, but truly can not manage the time to do a great deal with a visitor outside their daily routine (常规). They will probably expect us to get ourselves from the airport to our own hotel by bus. And they expect that we will phone them from there. Once we arrive at their homes, the welcome will be full, warm and real. We will find ourselves treated hospitably.
For the Americans, it is often considered more friendly to invite a friend to their homes than to go to restaurants, except for purely business matters. So accept their hospitality at home!
【小题1】The writer of this passage must be ___________.
| A．an American | B．a Chinese | C．a professor | D．a student |
| A．Friendships between Americans usually extend deeply into their family. |
| B．Friendships between Americans usually last for all their lives. |
| C．Americans always show their warmth even if they are very busy. |
| D．Americans will continue their friendships again even after a long break. |
| A．warmly welcomed at the airport | B．offered a ride to his home |
| C．treated hospitably at his home | D．treated to dinner in a restaurant |
| A．are strict with time | B．don’t take time seriously |
| C．don’t know how to use time | D．are willing to spend time for friends |
| A．Friendships between Chinese |
| B．Friendships between Americans |
| C．Americans’hospitality |
| D．Americans’and Chinese’s views of friendship |
查看答案和解析>>
科目：高中英语 来源： 题型：单选题
Using too much water or throwing rubbish into our rivers are clear ways that humans can put our water supply in danger, but we also affect our water supply in less obvious ways. You may wonder how paving (铺砌) a road can lead to less useable fresh water. A major part of the water we use every day is groundwater. Groundwater does not come from lakes or rivers. It comes from underground. The more roads and parking lots we pave, the less water can flow into the ground to become groundwater.
Human activity is not responsible for all water shortages (短缺). Drier climates are of course more likely to have droughts (干旱) than areas with more rainfall, but in any case, good management can help to make sure there is enough water to meet our basic needs .
Thinking about the way we use water every day can make a big difference, too. In the United States, a family of four can use 1.5 tons of water a day! This shows how much we depend on water to live, but there’s a lot we can do to lower the number.
You can take steps to save water in your home. To start with, use the same glass for your drinking water all day. Wash it only once a day. Run your dishwasher (洗碗机) only when it is full. Help your parents fix any leaks (裂缝) in your home. You can even help to keep our water supply clean by recycling batteries instead of throwing them away.
【小题1】Which of the following is most likely to lead to less groundwater?
| A．Using river water. | B．Throwing batteries away. |
| C．Paving parking lots. | D．Throwing rubbish into lakes. |
| A．All water shortages are due to human behavior. |
| B．It takes a lot of effort to meet our water needs. |
| C．There is much we can do to reduce family size. |
| D．The average family in America makes proper use of water. |
| A．show us how to fix leaks at home |
| B．tell us how to run a dishwasher |
| C．prove what drinking glass is best for us |
| D．suggest what we do to save water at home |
| A．why paving roads reduces our water |
| B．how much we depend on water to live |
| C．why droughts occur more in dry climates |
| D．how human activity affects our water supply |
查看答案和解析>>
科目：高中英语 来源： 题型：阅读理解
No opera smells of the sea quite like Britten’s Peter Grimes. The music makes us constantly aware of the sea’s immensity, it’s potential for threat, and the play of light on its waves. But the sea isn’t just a special background, it weighs on the lives of the characters, offering them a living, but at a price. In the first act the laboured sound of the strings evokes (引起) the complete heaviness of the sailor’s work, as they haul(用力拉) the boats up the shingle (鹅卵石). Then a storm gathers which rages(肆虐) through the scene at the Inn, and stirs up an orchestral hurricane. Even when it’s calm and favorable, the sea is inescapable.
In the comfortable enclosed world of the opera house, this can only be suggested. In the production of Peter Grimes about to open at the Aldeburgh Festival, it will be really present, because the opera is taking place on the beach, the setting for much of the narrative of Britten’s opera, and also the poem by the Suffolk poet George Crabbe that inspired it.
This won’t be the first opera production to be set in the actual landscape in which the action takes place. There’s a well-known filmed production of Tosca shot in Castel Gandolfo in Rome, and a production of Donizetti’s Anna Bolena was once mounted in the moat(护城河) surrounding the Tower of London. But those were manageable urban landscapes, with comfortingly solid buildings to act as wind shields and acoustic blocks.
On the Aldeburgh beach there’s actually nothing, apart from a few boats, some whole, some wrecked. Here anything more complicated than walking the dog is hard to solve. The wind blows away one’s words, so conversation is hard, and anything not tied down tends to blow away. The sliding shingle turns one’s steps into a drunken stagger.
The idea of performing an opera in these conditions seems quite barmy — an accusation Aldeburgh director Jonathan Reakie takes cheerfully on the chin. Why has he done it? “Well, Grimes is the opera of Britten’s that’s most associated with Aldeburgh, but it’s never been produced at the Festival which he founded. There just isn’t the space for it. In his anniversary year we wanted to focus on Britten’s connection with Suffolk, and this seemed the boldest way to do it.”
Having had the mad idea, Reakie found his colleagues were not just accepting, but enthusiastic. “We spent a long time thinking about ways to do it. One idea we had was to do all the scenes at the right time of day. There’s one scene at dawn, another at midday, and a lot of action at night, but that was too complicated. Then we thought about doing a few scenes on the beach. But in the end, we thought hell, let’s just do the whole thing.”
【小题1】Which of the following can best describe the sailor’s work in the first act?
| A．Pleasant. | B．Hard. |
| C．Comfortable. | D．Attractive. |
| A．By giving descriptions. | B．By following time order. |
| C．By analyzing causes. | D．By making comparisons. |
| A．The benefits of the actual landscape. |
| B．The actual landscape of Aldeburgh beach. |
| C．The location of the Aldeburgh beach. |
| D．The hardship of performing opera in Aldeburgh beach. |
| A．crazy | B．impossible |
| C．wonderful | D．terrible |
| A．eager | B．cautious |
| C．doubtful | D．unfavorable |
查看答案和解析>>
科目：高中英语 来源： 题型：阅读理解
A rainforest is an area covered by tall trees with the total high rainfall spreading quite equally through the year and the temperature rarely dipping below 16℃.Rainforests have a great effect on the world environment because they can take in heat from the sun and adjust the climate.Without the forest cover，these areas would reflect more heat into the atmosphere，warming the rest of the world.Losing the rainforests may also influence wind and rainfall patterns，potentially causing certain natural disasters all over the world.
In the past hundred years，humans have begun destroying rainforests in search of three major resources(资源)：land for crops，wood for paper and other products，land for raising farm animals.This action affects the environment as a whole.For example，a lot of carbon dioxide(二氧化碳)in the air comes from burning the rainforests.People obviously have a need for the resources we gain from cutting trees but we will suffer much more than we will benefit.
There are two main reasons for this.Firstly，when people cut down trees，generally they can only use the land for a year or two.Secondly，cutting large sections of rainforests may provide a good supply of wood right now，but in the long run it actually reduces the world's wood supply.
Rainforests are often called the world's drug store.More than 25% of the medicines we use today come from plants in rainforests.However，fewer than 1%of rainforest plants have been examined for their medical value.It is extremely likely that our best chance to cure diseases lies somewhere in the world's shrinking rainforests.
【小题1】Rainforests can help to adjust the climate because they ______.
| A．reflect more heat into the atmosphere |
| B．reduce the effect of heat from the sun on the earth |
| C．bring about high rainfall throughout the world |
| D．rarely cause the temperature to drop lower than 16℃ |
| A．Humans have begun destroying rainforests. |
| B．People have a strong desire for resources. |
| C．We will lose much more than we can gain. |
| D．Much carbon dioxide comes from burning rainforests. |
| A．we can get enough resources without rainforests |
| B．we will grow fewer kinds of crops in the gained land |
| C．the level of annual rainfall affects wind patterns |
| D．there is great medicine potential in rainforests |
| A．Rainforests and the Environment |
| B．How to Save Rainforests |
| C．How to Protect Nature |
| D．Rainforests and Medical Development |
查看答案和解析>>
科目：高中英语 来源： 题型：阅读理解
The world itself is becoming much smaller by using modern traffic and modern communication means. Life today is much easier than it was hundreds of years ago, but it has brought new problems. One of the biggest problems is pollution. To pollute means to make things dirty. Pollution comes in many ways. We see it, smell it, drink it and even hear it.
Man has been polluting the earth. The more people, the more pollution. Many years ago, the problem was not so serious because there were not so many people. When the land was used up or the river was dirty in one place, man moved to another place. But this is no longer true.
Man is now slowly polluting the whole world.
Air pollution is still the most serious. It’s bad for all living things in the world, but it is not the only one kind of pollution. Water pollution kills our fish and pollutes our drinking water. Noise pollution makes us angry more easily.
Many countries are making rules to fight pollution. They stop people from burning coal in houses and factories in the city, and from putting dirty smoke into the air. Pollution by SO2 is now the most dangerous kind of air pollution. It is caused by heavy traffic. We are sure that if there are fewer people driving, there will be less air pollution.
The earth is our home. We must take care of it. That means keeping the land, water and air clean. And we must take care of the rise in pollution at the same time.
【小题1】 _______, our world is becoming much smaller.
| A．Because of the rise in pollution |
| B．Thanks to science development |
| C．Because the earth is being polluted day and night |
| D．Because the earth is blown away by the wind every year |
| A．much easier than | B．as easy as |
| C．much harder than | D．as hard as |
| A．rubbish（垃圾） | B．noise pollution |
| C．air pollution | D．water pollution |
| A．Many countries are making rules to fight pollution. |
| B．The pollution of the earth grows as fast as the world population does. |
| C．The problem of pollution is not so serious because there are not so many people living on the earth. |
| D．If people could go to work by bus or bike instead of car or motorbike, it would be helpful in fighting against the problem of SO2. |
查看答案和解析>>
科目：高中英语 来源： 题型：阅读理解
What do you use to get around town? A car? A bike? Your feet ? perhaps you should try a segway!
The Segway is perfect for short journeys. It’s an electric vehicle that consists of a platform between two wheels, with a pole that connects the platform to the handlebars. To ride it , you step up onto the platform, and control the Segway by moving your body. Lean forwards to go faster, and back-wards to slow down.
On older models, direction was controlled by a twist grip（扭转把手）on the left handlebar. This varies the speeds between the two motors, and a decrease in the speed of the left wheel would turn the Segway to the left . With newer models you simply lean to the left or right. Meanwhile, a gyroscope （陀螺仪）detects your movements and prevents the machine from falling over. The Segway has a maximum speed of 19 km per hour and a range of about 38 km. after that, you need to plug it and recharge the battery.
Segways are used for a variety of purposes. People with mobility problems can now enjoy walks in the country with their friends and family. Some golfers see them as an alternative to the golf cart . And dog owners now have an easier way to take the dog to the park. A few police forces use Segways, too. They allow officers to move quickly while maintaining contact with the public. They’re also becoming a common sight on airport . However, the most popular use is in tourism , particularly for city tours . Visit any major tourist city in summer, sit outside a cafe for a while and there’s a good chance you’ll see a group of tourists passing on Segways.
【小题1】How do you turn to the left on a Segway of the new model?
| A．Lean to the left | B．Adjust the twist grip |
| C．Press the left bar | D．Control the gyroscope |
| A．Less than 19 km | B．About 19 km |
| C．About 38 km | D．Over 45 km |
| A．families | B．golfers |
| C．police | D．tourists |
| A．Introduction→Ways of application→ structure→Principle of operation |
| B．Introduction→ Principle of operation→Structure →Ways of application |
| C．Introduction → Structure → Principle of operation →ways of application |
| D．Structure→ Introduction→Principle of operation→Ways of application |
查看答案和解析>>
湖北省互联网违法和不良信息举报平台 | 网上有害信息举报专区 | 电信诈骗举报专区 | 涉历史虚无主义有害信息举报专区 | 涉企侵权举报专区
违法和不良信息举报电话：027-86699610 举报邮箱：58377363@163.com