17.Electrical devices(儀器)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 he used in hospitals to operate heart pacemakers,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 should be ready in one year.
The developers hope the device will one day help developing countries; nearly twenty five prcent of people around the world live without electric power.
A similar product was invented in 2005by Larry Rome of the University of Pennsylvania,He created a bag carried on a person's back that also produces power from walking.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.
32.The second paragraph mainly talks aboutB
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
33.What is the disadvantage of the experimental version of the device?C
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
34.Compared with the device designed by Larry Rome,this new deviceA
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 walk faster
35.What would be the best title for the passage?C
A.First device powered by walking will 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.

分析 本文講述科學(xué)家研制出一種固定在人膝蓋上的發(fā)電裝置.這種裝置可通過(guò)收集人走路時(shí)損失的能量發(fā)電.

解答 32.B.段落大意題.根據(jù)文章第2段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 sown movement of the leg.可知本段主要講述的是這個(gè)機(jī)器是如何運(yùn)轉(zhuǎn)工作的,故B正確.
33.C.細(xì)節(jié)理解題.根據(jù)文章第4段1,2行The experimental version of the device weighs about one and a half kilograms,but it is too costly for most people to buy.可知這個(gè)機(jī)器太貴了,普通人買不起這個(gè)機(jī)器.故C正確.
34.A.推理判斷題.根據(jù)文章最后2行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.可知以前的舊機(jī)器需要人背著很重的負(fù)荷.故A正確.
35.C.主旨大意題.本文主要介紹的是一種新的裝備讓我們步行也可以發(fā)電,以及這種裝置的工作原理等.故C正確.

點(diǎn)評(píng) 考察學(xué)生的細(xì)節(jié)理解和推理判斷能力,做細(xì)節(jié)理解題時(shí)一定要找到文章中的原句,和題干進(jìn)行比較,再做出正確的選擇.在做推理判斷題不要以個(gè)人的主觀想象代替文章的事實(shí),要根據(jù)文章事實(shí)進(jìn)行合乎邏輯的推理判斷.

練習(xí)冊(cè)系列答案
相關(guān)習(xí)題

科目:高中英語(yǔ) 來(lái)源: 題型:信息匹配

7.Culture Shock
Culture shock refers to the anxiety and feelings (of surprise,uncertainty,confusion,etc.) felt when people have to operate within a different and unknown cultural or social environment,such as a foreign country.
Generally speaking,we could say that there are four stages of culture shock.The first stage is called"the honeymoon".In this stage,you are excited about living in a different place.(36)G
The next stage is"the hostility(敵意)stage".In this stage,you begin to notice not everything is as good as you originally thought it was.(37)DMoreover,people don't treat you like a guest anymore.
Then you come to the third stage called"recovery".In this stage,you start to feel more positive.(38)BThe whole situation starts to become more favorable and you begin to learn to adapt yourself to it.
The last stage of culture shock is called"adjustment".In this stage,you have reached a point where you actually feel good.(39)EThe things that originally made you feel uncomfortable or strange are now things that you understand.Now you have adjusted to the new culture and you feel comfortable.
Not all individuals visiting another country will experience all these four stages.
(40)CIt also occurs within cultures as individuals move from place to place or from one setting to another (e.g.,from high school to college).

A.You feel that friends should help each other to deal with culture shock.
B.And you try to develop comprehension of everything you don't understand.
C.In addition,culture shock is not limited to the overseas visitor.
D.You become tired of many things about the new culture.
E.You have learned enough to understand the new culture.
F.You begin to understand you need to travel a lot.
G.And everything seems to be marvelous and everybody seems to be so nice to you.

查看答案和解析>>

科目:高中英語(yǔ) 來(lái)源: 題型:填空題

8.你會(huì)一覽這個(gè)飛速發(fā)展的城市的美麗風(fēng)景.You'll have a good view of the rapidly changing city..

查看答案和解析>>

科目:高中英語(yǔ) 來(lái)源: 題型:填空題

5.One sentence from the news in Washington has remained in my mind since a trip last summer:"When you see people run against the crowd escaping(61)fromthe danger,they are (62)probably(probable) firefighters,police or journalists.
I think this is most true for the firefighters.Whenever and wherever (63)disasters(disaster) happen-9/11 Attacks in New York 14 years ago or the explosion in Tianjin on Wednesday night-it is always the firefighters(64)that/whotake the lead to run to the very center,saving lives by(65)risking(risk) their own.I cried today near the explosion site,not because of the smoke from the ongoing fire(66)butbecause of a short message a firefighter sent to a trusted friend that went viral online.It reads,"If I cannot make it,my father is(67)yours(you); and please remember(68)to sweep(sweep) my mother's tomb."I was thrilled later to learn that he did make it
"Everyone knows it's (69)dangerous(danger) to be a firefighter.But he has always liked it and has done it for 12 years,"his father said."He survived this time,but no one knows what(70)will happen(happen) next time."

查看答案和解析>>

科目:高中英語(yǔ) 來(lái)源: 題型:填空題

12.The beauty of confidence is that it is possible to learn it,no matter who you are!Follow these simple steps to be confident.
    Consider your strengths and success.(36)B.When have you helped others?What are you good at?When have you taken pride in yourself?What are you working hard for?If you have difficulty thinking of your strengths and success,ask your family members or a close friend.
    Have goals.Sitting around and doing nothing will make you feel worse.Start with a small goal.(37)EYou'll get more confidence achieving a small goal.Once you've achieved many smaller goals,you can set bigger goals.
    (38)G.Failure is the mother of success.When you fail,view it as a learning experience.Often we have to fail on our own to gain experience.By failing,you have at least taken a chance.
    Pick a role model.Pick a role model that is always confident and always learn from them.Study their action,their manners of speaking and how they communicate with others.(39)A.However,it's a great place to start.
    Smile.Confident people smile often,and without much reason.(40)D.It tells the people around you that you're comfortable in yourself and enjoying your time.

A.Of course you don't want to spend your entire life copying someone else.
B.If possible,write them down so that you can look back at them later.
C.Start projecting a more powerful you today.
D.Smiling is a friendly and open gesture.
E.Otherwise,you'll get discouraged.
F.After reaching a goal,reward yourself.
G.Learn from failure.

查看答案和解析>>

科目:高中英語(yǔ) 來(lái)源: 題型:閱讀理解

2."Eat local."It's one way to reduce human effect on the planet.Eating local means to try to buy and consume(消耗) foods that are grown in places close to home.However,most of the food sold at supermarkets is not locally grown or produced.Trucks and planes deliver these foods from hundreds or thousands of miles away.During the transportation,greenhouse gases are produced,causing global warming.So the shorter the distance your foods must travel,the less the harm is done to the environment.
But how do you get local food if you live in a large city,hundreds of miles away from farms?Environmental health scientist Dickson Despommier and his students came up with the idea of a"vertical(垂直的) farm".
A vertical farm is a glasswalled structure that could be built as tall as a skyscraper(摩天大樓).Since the garden is built upwards,rather than outwards,it requires much less space than an ordinary farm.The world is quickly running out of room for ordinary farming.Vertical farms could be a key to this situation.Despommier imagines a 30story building with a greenhouse on every floor.The walls of the building would be clear,to allow crops to get as much sunlight as possible.Depending on a city's water resources,Despommier thinks hydroponic(水培) farming is another method for the vertical farm which needs no soil to grow plants.
Despommier says the hydroponic greenhouses would use a system that would use a city's waste water and fill it with nutrition to make the crops grow.If this method works,it would provide food to a city and save millions of tons of water.
The idea of a vertical farm has attracted the attention of government officials around the world.Scott Stringer,a government official from New York City,thinks the city is suitable for the vertical farming."Obviously we don't have much land left for us,"Stringer said,"But the sky is the limit in Manhattan."
Despommier admits that there is still a lot of work to do to make vertical farms a reality."But I think vertical farming is an idea that can work in a big way."he says.
8.Why are people advised to eat local?C
A.Because it means convenience to people.
B.Because it can help people save a lot of money.
C.Because it is environmentally friendly.
D.Because local food has more nutrition.
9.Which is one of the vertical farm's benefits when compared with ordinary farming?B
A.It produces healthier food.
B.It needs less space of the city.
C.It consumes more energy of the city.
D.It does less harm to the cities.
10.From Stringer'words we can conclude thatD.
A.Manhattan has a great potential(潛力) for development
B.there is a limit for using empty land in Manhattan
C.the height of buildings in Manhattan is limited
D.people can make full use of vertical space of Manhattan
11.What can we infer about the vertical farming in the passage?B
A.It has solved the problem of the food shortage in a big way.
B.In a vertical farm,soil may not be needed to grow plants.
C.It is a 30story building with a greenhouse on every floor.
D.Crops are mainly grown in the rainwater in a vertical farm.

查看答案和解析>>

科目:高中英語(yǔ) 來(lái)源: 題型:閱讀理解

9.The vast,rural stretches of the United States have,in many ways,defined the American spirit.Up until the 20th century,the majority of Americans lived in the countryside,in what's called"Middle America"or"the Heartland".
But research has shown that growing up in America's Heartland can put students at a disadvantage when it comes to their college education.This,in turn,can hinder (to make it difficult for something to develop or succeed )their social mobility.
A 2015study released by the US Department of Education investigated the gap between urban and rural college students,by concentrating on a group of high school graduates from Indiana.
US'national statistics had previously shown that only 27percent of rural students enroll in college,compared to 37percent of city kids.
What the study found was that urban and rural students left high school with similar academic backgrounds.Yet,the rural students were more inclined to settle for two-year colleges or less selective universities,even though they had the potential to attend to better schools.
The researchers say distance heavily influenced the students'decisions."The farther rural graduates'high schools were from colleges,the more likely rural graduates were to enroll in a two-year college or to‘undermatch'with a college,"the report read.Many of the rural students indicated that living close to family was a priority.
But the researchers also noted that resources were scarcer for the rural students.Selective universities tended to concentrate their recruitment efforts on dense,urban centers,where there were more students to meet.
A rural teen's educational opportunities may also depend on gender.Casey Quinlan,writing for The Atlantic,notes that rural women are more likely to marry sooner."Early marriage occurs most frequently among young adults with low educational background,"Quinlan said,citing a 2010study.
But the problem of social mobility isn't limited to the rural population.The United States has one of the highest rates of income inequality among developed nations.And by some measures,rural residents might have an advantage.
Stanford University's 2015Poverty and Inequality Report found that poverty was hardest to escape in the American South,and in places with high racial segregation.It concluded that urban areas actually"tend to have lower rates of social mobility than rural areas".
"The successful children growing up in rural areas do not just ‘move up' but also generally‘move out'.That is,they typically move to large metropolitan areas,often out of their state of birth,"the report explained.
Rural areas are also hoping to give their residents a boost up the social ladder.In Kansas,graduates can get 15,000 (95,297yuan) to pay off their student debt if they move to a rural county.They keep more money in their pockets and get to enjoy more economic freedom as a result.
74.What is the main reason that the rural graduates choose to enter two-year college or to‘undermatch'with a college?B
A.The graduates in the rural areas start a family as early as possible.
B.Many of the graduates regard living close to family as a priority.
C.A rural teen's educational opportunities may also depend on gender.
D.Most young adults with low educational backgrounds lose the chance easily.
75.The successful children growing up in rural areas do not just ‘move up'but also generally‘move out'Here‘move up'means that they canD.
A.enjoy luxury life like top class           
B.develop themselves faster than ever
C.come into the top class of a college       
D.climb to the top of the social ladder
76.From the research released by the US Department of Education,we know thatB.
A.the gender gap might hinder the development of the graduates in the rural area
B.the distance outweighs the academic backgrounds in graduates decision making
C.the social ladder gap might stop graduates from being enrolled into better colleges
D.the racial segregation stops the graduates in the rural area getting high salary
77.From what author has described in the last paragraph We can predict thatB.
A.the policy might encourage girls in the rural area marry earlier
B.the policy might attract more graduates to work in the rural area
C.the policy might make selective universities to focus on the rural area
D.the policy might make it easier for the graduates to develop better and faster.

查看答案和解析>>

科目:高中英語(yǔ) 來(lái)源: 題型:填空題

6.Eventually(最后;終于),the soldiers made a breakthrough and the D-Day landings were successful.

查看答案和解析>>

科目:高中英語(yǔ) 來(lái)源: 題型:填空題

13.The ideathat/which/不填he proposed at the meeting is altogether nonsense.

查看答案和解析>>

同步練習(xí)冊(cè)答案