国开电专科理工英语2台机考题库
第四题 阅读判断题
说明试题机组合
A
Almost everyone is familiar with video conferencing todayand for good reasonsVideo conferencing is convenientVideo conferencing saves moneyVideo conferencing makes moneyAnd it is so much easier than it used to be
Todayof coursevideo conferencing has become an important means for doing businessThere is no longer a need to waste time and money travelingand the advanced technology can offer what every conferencing needsAudioweb and video together can provide good solutions for large conferences with Q&A sessions and private chats
Why is video conferencing so successful when other technologies have come and gone It is because it＇s convenient and costeffectiveIn addition to saving time and moneyvideo conferencing is a lot less stressful than a meeting after a day of airport securitydelayed flights and hotel checkinetc
Best of allvideo conferencing is not expensive nowadaysWebvideo and audio conferencing service providers can quickly get you up and runningoften without setup fees or high chargesWith all that＇s available todaythe only question is whether a business can afford not to use userfriendly video conferencing
26It was easy to use video conferencing in the past[答案]F
27Video conferencing is a convenient way for doing business[答案]T
28Only video can provide good solutions for large conferences with Q &A sessions[答案]F
29Compared to some other forms of meetingsvideo conferencing is much more stressful[答案]F
30Nowadays if you don＇t use video conferencing in some casesmaybe your business will suffer losses to some degree[答案]T
B
BENEFITS OF VIDEO CONFERENCING
Almost everyone is familiar with video conferencing todayand for good reasonsVideo conferencing is convenientVideo conferencing saves moneyVideo conferencing makes moneyAnd it is so much easier than it used to be
Todayof coursevideo conferencing has become an important means for doing businessThere is no longer a need to waste time and money travelingand the advanced technology can offer what every conferencing needsAudioweb and video together can provide good solutions for large conferences with Q&A sessions and
private chats
Why is video conferencing so successful when other technologies have come and goneIt is because it’s convenient and costeffectiveIn addition to saving time and moneyvideo conferencing is a lot less stressful than a meeting after a day of airport securitydelayed flights and hotel checkinetc
Best of allvideo conferencing is not expensive nowadaysWebvideo and audio conferencing service providers can quickly get you up and runningoften without setup fees or high chargesWith all that’s available todaythe only question is whether a business can afford not to use userfriendly video conferencing
1It’s easy to use video conferencing in the past[答案]F
2Video conferencing is a convenient way for doing business[答案]T
3Only video can provide good solutions for large conferences with Q&A sessions[答案]F
4Compared to some other forms of meetingsvideo conferencing is much more stressful[答案]F
5Nowadays if you don’t use video conferencing in some casesmaybe your business will suffer losses to some degree[答案]T
I
I AM A COURIER
I am a courierMany people today are glad to see usbecause they expect to receive what they have bought on the InternetWhen I see their eager facesI feel that my job is valuableI am proud of my jobWhy did I choose to be a courier
The first benefit isI thinkcouriers can usually deliver an item faster than it would have taken if sent by other meansFor examplea person may need to send a document to someone elseHe could do this by sending it through the mailIf the two parties are in the same citythis transaction is likely to take at least one dayCouriershoweverusually can make it happen within hours
Secondlycouriers generally offer a receipt for the delivery and that can make their clients feel more securePostal services generally are not as efficient in this regardEven text messages and emails may not be comparableIn many caseswithout delivery confirmationthe sender knows that something was sentbut there is no confirmation as to whether it was received or when it was received
Most importantlythe Internet has changed people’s shopping habitsMore and more people tend to shop on the InternetThe goods bought on the Internet have to be delivered by couriersSo a courier can make more money if he wants to work longer hours
That’s why I have chosen to work as a courierWellthat’s about my jobTime is moneyI have to send packages to the next place nowTalk to you later
1People are glad to see couriers because they can bring people good luck[答案]F
2Couriers can deliver items faster than other means only in the same city[答案]F
3Postal services generally are not as efficient because there isn’t delivery confirmation[答案]T
4If working longer hourscouriers can earn more money[答案]T
5The courier who is talking likes his job[答案]T
Improving work safety is a must and a goalIt should be on everyone’s mindAccording to the US Department of Laborevery year almost 6000 people are fatally injured at workMore than four million people suffer nonfatal injuriesWhat＇s worsemany of these deaths and injuries were due to carelessnessand could have easily been avoided by paying more attention to safety rules
Employers are required to provide a safe workplacebut your safety at work is your businessIf you feel like the environment is unsafe and your complaints fall on deaf earsyou should look for other employment or report the problem to the proper authoritiesOf coursesome jobs are more dangerous than othersIf you have one of these jobsyou＇ll need to be extra alertDeaths and injuries occur in all kinds of employment
Thankfullythere area great many things you can do to improve your safety at workYou can improve safety awareness among your coworkers and supervisorsas well as lobby your employer to improve safety policiespracticesand trainingBe active when it comes to workplace safetyDon＇t wait for others to pickup the ballWhile you＇re waitingyou may windup getting injuredSo take it upon yourself to do what you can to reduce your chances of being injured at work
26Improving work safety is necessary[答案]T
27Many of these deaths and injuries at work could have been avoided[答案]T
28You could do nothing if you feel like the environment is unsafe and your complaints fall on deaf ears[答案]F
29Deaths and injuries only occur in dangerous jobs[答案]F
30When it comes to workplace safetythe employees should be concerned about their own safety[答案]T
It will be the 50th anniversary of the founding of Lehigh Valley Industrial Park IncLVIP’s successes have defined this regionincluding its economyits residents’ working liveseven the look of broad areas across Lehigh and Northampton counties
People are duly observing the date with banquetsawards and other festivitiesBut they ought to know about a few facts in order to appreciate the importance of what was begun 50 years ago
LVIP now comprises seven planned parksThey are home to 460 companiesThose companies provide 22000 jobsLVIP has borrowed more than 436 million in private investment over the yearsIt has paid tens of millions of property and payroll taxes
We can imagine what will happen to this area if there aren’t those jobsObviouslywe ought to appreciate the genius of LVIP’s foundersFifty years agoBethlehem Steel Corpand other integrated steelmakers were hit by the fifth nationwide strike in 15
yearsThose cycles of strikes affected every part of the local economy
Contractor Frank LMarcon told fellow board members at the Bethlehem Chamber of Commerce that a more diverse economy could be fostered if public and private leaders acted togetherIn those daysthere were no state or federal economic development programsSo18 individuals pooled 250000 of their own money and LVIP sold bonds to raise 400000 more to buy four farms along Airport RoadThe City of Bethlehem contributed planning workamended its zoning code and worked out an affordable way to add streetscurbs and sewersCompanies like Bethlehem Steel made major contributionscreating a new model for cooperation
Another important decision was made that yearIt made Lehigh Valley part of the name of the new endeavorThe late Walter Dealtreya former LVIP board presidentused to tell people that back thendecades before regionalization became part of the public vocabularyThose leaders knew their vision had to carry the stamp of big ideasThat first 226 acre tract could have been called Bethlehem Industrial Park because that’s where it was
1Lehigh Valley Industrial Park is fifty years old now[答案]T
2Lehigh Valley Industrial Park plays a very important role in the local people’s lives[答案]T
3People don’t really know the history of Lehigh Valley Industrial Park[答案]T
4Steelmakers created Lehigh Valley Industrial Park[答案]T
5Only private leaders acted together to foster a more diverse economy[答案]F
K
KindlesNooks and other ereaders are threatening the future of printed booksBut reading itself may get a boost from the devicesFor examp1ea study found that the kids felt better about reading after a course in which they used Amazon KindlesThe research is in the International journal of Applied Science and Technology
For two months199 midd1eschool students in a reading improvement class in Texas had 15 to 25 minutes every day when they were free to read on the KindleIn generalthe students felt the device improved their reading abilityAnd they tended to enjoy using an ereader
Howeversome lowleve1 readers may feel somewhat embarrassed when they are seen with a simple bookBecause they can never use fake book covers as in the past to keep their peers in the dark
26Amazon Kindles is a kind of ebooks[答案]T
27The research done in the International journal of Applied Science and Technology has lasted for two years[答案]F
28The students felt ebooks could not improve their reading ability[答案]F
29Many students tended to enjoy using an ereader[答案]T
30Some lowlevel readers used to use fake bookcovers to keep their peers in the dark[答案]T
M
PROTECTING EYES FROM COMPUTER SCREENS
Many of us spend the bulk of the day looking at computer screensReading this article means there’s a good chance you’re looking at one right now
But does looking at computer screens damage your eyesProfessor Nathan Efron does not consider computer screens harmful to our eyes
But he admits if you use one a lotyou increase your risk of becoming slightly more shortsightedwhere your eyes focus well only on close objects while more distant objects appear blurredThis is especially the case for children and young adultswhose eyes are still developing
In the shorter termprolonged viewing of a computer screen can make any slight existing vision defects more noticeableIt can also give you what is sometimes known as computer vision syndrome eye strainheadachesgritty eyes and blurry visionBut this is only temporary and can be minimized by
Adjusting the screen display so the contrast is high and the brightness feels comfortable
Having lighting that does not produce glare on the screen
Giving your eyes regular rests from looking at the screen (The Optometrists Association of Australia recommends you do this for five to ten minutes every one to two hours of computer useIt＇s a good time to make phone calls or do other tasks)
1Many of us spend much time looking at computer screens[答案]T
2Looking at computer screens for long time doesn’t damage children and young adults’ eyesight[答案]F
3Computer vision syndrome cannot be weakened[答案]F
4It’s good taking breaks during screen watching[答案]T
5Proper lighting is important to protect our eyes[答案]T
N
NEW MATERIAL CAN COOL BUILDINGS
Researchers at Stanford University have developed a new material that can move heat out of buildings and into spaceThe material can cool buildings even on hot days
The cooling material is a very thin sheet with many layers that could be placed on a roof like solar panelsHoweverinstead of turning sunlight into energy as solar panels dothe material turns heat into infrared radiation
Shanhui Fan is an electrical engineering professor at Stanford UniversityHe says that the panels have a layer of material that is like sandThe panels also act like a mirrorThey take heat out of buildings and reflect the light from the sunBoth the heat and sunlight are sent 100 kilometers into outer space
The panels are cool to the toucheven in the sunResearchers say they can reduce the indoor temperature to nearly 5 degrees Celsius below the temperature outside
MrFan says it is like having a window into spaceHe says the heat is sent directly into space without warming the airBuildings in developing countries that do not have electricity or air conditioning could use the panelsIn areas where one is offgridthere is a significant potential benefit for storing medicine or even foodIn many of these situationsbeing able to reduce the temperature is importantAnd this would provide a way to do it
The Stanford researchers described their technology in the science publication NatureThey say the main problem is creating actual cooling systems using the hightech panelsIt may be possible to develop a cooling spray technology in the next three to five years that could be used on existing solid structures
1The material can cool buildings only on cold days[答案]F
2The material turns heat into infrared radiation because it is a very thick sheet with many layers that could be placed on a roof like solar panels[答案]F
3The heat of the buildings and sunlight are sent 100 kilometers into outer space by the panels[答案]T
4The offgrid areas may use the panels to reduce the temperature of buildings to store medicine or even food[答案]T
5A cooling spray technology may be developed in the near future that could be used on existing solid structures[答案]T
P
PROTECTING EYES FROM COMPUTER SCREENS
Many of us spend the bulk of the day looking at computer screensReading this article means there’s a good chance you’re looking at one right now
But does looking at computer screens damage your eyesProfessor Nathan Efron does not consider computer screens harmful to our eyes
But he admits if you use one a lotyou increase your risk of becoming slightly more shortsighted –where your eyes focus well only on close objects while more distant objects appear blurredThis is especially the case for children and young adultswhose eyes are still developing
In the shorter termprolonged viewing of a computer screen can make any slight existing vision defects more noticeableIt can also give you what is sometimes known as computer vision syndrome – eye strainheadachesgritty eyes and blurry visionBut this is only temporary and can be minimized by
Adjusting the screen display so the contrast is high and the brightness feels comfortable
Having lighting that does not produce glare on the screen
Giving your eyes regular rests from looking at the screen (The Optometrists Association of Australia recommends you do this for five to ten minutes every one to two hours of computer useIt＇s a good time to make phone calls or do other tasks)
1Many of us spend much time looking at computer screens[答案]T
2Looking at computer screens for long time doesn’t damage children and young adults’ eyesight[答案]F
3Computer vision syndrome cannot be weakened[答案]F
4It’s good taking breaks during screen watching[答案]T
5Proper lighting is important to protect our eyes[答案]T
R
NEW MATERIAL CAN COOL BUILDINGS
Researchers at Stanford University have developed a new material that can move heat out of buildings and into spaceThe material can cool buildings even on hot days
The cooling material is a very thin sheet with many layers that could be placed on a roof like solar panelsHoweverinstead of turning sunlight into energy as solar panels dothe material turns heat into infrared radiation
Shanhui Fan is an electrical engineering professor at Stanford UniversityHe says that the panels have a layer of material that is like sandThe panels also act like a mirrorThey take heat out of buildings and reflect the light from the sunBoth the heat and sunlight are sent 100 kilometers into outer space
The panels are cool to the toucheven in the sunResearchers say they can reduce the indoor temperature to nearly 5 degrees Celsius below the temperature outside
MrFan says it is like having a window into spaceHe says the heat is sent directly into space without warming the airBuildings in developing countries that do not have electricity or air conditioning could use the panelsIn areas where one is offgridthere is a significant potential benefit for storing medicine or even foodIn many of these situationsbeing able to reduce the temperature is importantAnd this would provide a way to do it
The Stanford researchers described their technology in the science publication NatureThey say the main problem is creating actual cooling systems using the hightech panelsIt may be possible to develop a cooling spray technology in the next three to five years that could be used on existing solid structures
1The material can cool buildings only on cold days[答案]F
2The material turns heat into infrared radiation because it is a very thick sheet with many layers that could be placed on a roof like solar panels[答案]F
3The heat of the buildings and sunlight are sent 100 kilometers into outer space by the panels[答案]T
4The offgrid areas may use the panels to reduce the temperature of buildings to store medicine or even food[答案]T
5A cooling spray technology may be developed in the near future that could be used on existing solid structures
[答案]T
W
WILL EREADERS REPLACE THE CONVENTIONAL PAPER BOOK
KindlesNooks and other ereaders are threatening the future of printed booksBut reading itself may get a boost from the devicesFor examplea study found that the kids felt better about reading after a course in which they used Amazon KindlesThe research is in the International Journal of Applied Science and Technology
For two months199 middleschool students in a reading improvement class in Texas had 15 to 25 minutes every day when they were free to read on the KindleIn generalthe students felt the device improved their reading abilityAnd they tended to enjoy using an ereader
They noted the ease of carrying multiple books in one deviceand the feeling that reading was suddenly a hightech 21stcentury activity rather than a boring waste of timeAnd some lowlevel readers who might otherwise be embarrassed to be seen with a simple book liked keeping their peers in the dark about what title they were readingIn the old daysone had to use a fake bookcover to achieve that level of secrecy
1Amazon Kindles is a kind of ebooks[答案]T
2The research done in the International Journal of Applied Science and Technology has lasted for two years[答案]F
3The students felt ebooks could not improve their reading ability[答案]F
4Many students tended to enjoy using an ereader[答案]T
5Some lowlevel readers used to use fake bookcovers to keep their peers in the dark[答案]T
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第四题 阅读判断题
说明试题机组合
A
Almost everyone is familiar with video conferencing todayand for good reasonsVideo conferencing is convenientVideo conferencing saves moneyVideo conferencing makes moneyAnd it is so much easier than it used to be
Todayof coursevideo conferencing has become an important means for doing businessThere is no longer a need to waste time and money travelingand the advanced technology can offer what every conferencing needsAudioweb and video together can provide good solutions for large conferences with Q&A sessions and private chats
Why is video conferencing so successful when other technologies have come and gone It is because it＇s convenient and costeffectiveIn addition to saving time and moneyvideo conferencing is a lot less stressful than a meeting after a day of airport securitydelayed flights and hotel checkinetc
Best of allvideo conferencing is not expensive nowadaysWebvideo and audio conferencing service providers can quickly get you up and runningoften without setup fees or high chargesWith all that＇s available todaythe only question is whether a business can afford not to use userfriendly video conferencing
26It was easy to use video conferencing in the past[答案]F
27Video conferencing is a convenient way for doing business[答案]T
28Only video can provide good solutions for large conferences with Q &A sessions[答案]F
29Compared to some other forms of meetingsvideo conferencing is much more stressful[答案]F
30Nowadays if you don＇t use video conferencing in some casesmaybe your business will suffer losses to some degree[答案]T
B
BENEFITS OF VIDEO CONFERENCING
Almost everyone is familiar with video conferencing todayand for good reasonsVideo conferencing is convenientVideo conferencing saves moneyVideo conferencing makes moneyAnd it is so much easier than it used to be
Todayof coursevideo conferencing has become an important means for doing businessThere is no longer a need to waste time and money travelingand the advanced technology can offer what every conferencing needsAudioweb and video together can provide good solutions for large conferences with Q&A sessions and
private chats
Why is video conferencing so successful when other technologies have come and goneIt is because it’s convenient and costeffectiveIn addition to saving time and moneyvideo conferencing is a lot less stressful than a meeting after a day of airport securitydelayed flights and hotel checkinetc
Best of allvideo conferencing is not expensive nowadaysWebvideo and audio conferencing service providers can quickly get you up and runningoften without setup fees or high chargesWith all that’s available todaythe only question is whether a business can afford not to use userfriendly video conferencing
1It’s easy to use video conferencing in the past[答案]F
2Video conferencing is a convenient way for doing business[答案]T
3Only video can provide good solutions for large conferences with Q&A sessions[答案]F
4Compared to some other forms of meetingsvideo conferencing is much more stressful[答案]F
5Nowadays if you don’t use video conferencing in some casesmaybe your business will suffer losses to some degree[答案]T
I
I AM A COURIER
I am a courierMany people today are glad to see usbecause they expect to receive what they have bought on the InternetWhen I see their eager facesI feel that my job is valuableI am proud of my jobWhy did I choose to be a courier
The first benefit isI thinkcouriers can usually deliver an item faster than it would have taken if sent by other meansFor examplea person may need to send a document to someone elseHe could do this by sending it through the mailIf the two parties are in the same citythis transaction is likely to take at least one dayCouriershoweverusually can make it happen within hours
Secondlycouriers generally offer a receipt for the delivery and that can make their clients feel more securePostal services generally are not as efficient in this regardEven text messages and emails may not be comparableIn many caseswithout delivery confirmationthe sender knows that something was sentbut there is no confirmation as to whether it was received or when it was received
Most importantlythe Internet has changed people’s shopping habitsMore and more people tend to shop on the InternetThe goods bought on the Internet have to be delivered by couriersSo a courier can make more money if he wants to work longer hours
That’s why I have chosen to work as a courierWellthat’s about my jobTime is moneyI have to send packages to the next place nowTalk to you later
1People are glad to see couriers because they can bring people good luck[答案]F
2Couriers can deliver items faster than other means only in the same city[答案]F
3Postal services generally are not as efficient because there isn’t delivery confirmation[答案]T
4If working longer hourscouriers can earn more money[答案]T
5The courier who is talking likes his job[答案]T
Improving work safety is a must and a goalIt should be on everyone’s mindAccording to the US Department of Laborevery year almost 6000 people are fatally injured at workMore than four million people suffer nonfatal injuriesWhat＇s worsemany of these deaths and injuries were due to carelessnessand could have easily been avoided by paying more attention to safety rules
Employers are required to provide a safe workplacebut your safety at work is your businessIf you feel like the environment is unsafe and your complaints fall on deaf earsyou should look for other employment or report the problem to the proper authoritiesOf coursesome jobs are more dangerous than othersIf you have one of these jobsyou＇ll need to be extra alertDeaths and injuries occur in all kinds of employment
Thankfullythere area great many things you can do to improve your safety at workYou can improve safety awareness among your coworkers and supervisorsas well as lobby your employer to improve safety policiespracticesand trainingBe active when it comes to workplace safetyDon＇t wait for others to pickup the ballWhile you＇re waitingyou may windup getting injuredSo take it upon yourself to do what you can to reduce your chances of being injured at work
26Improving work safety is necessary[答案]T
27Many of these deaths and injuries at work could have been avoided[答案]T
28You could do nothing if you feel like the environment is unsafe and your complaints fall on deaf ears[答案]F
29Deaths and injuries only occur in dangerous jobs[答案]F
30When it comes to workplace safetythe employees should be concerned about their own safety[答案]T
It will be the 50th anniversary of the founding of Lehigh Valley Industrial Park IncLVIP’s successes have defined this regionincluding its economyits residents’ working liveseven the look of broad areas across Lehigh and Northampton counties
People are duly observing the date with banquetsawards and other festivitiesBut they ought to know about a few facts in order to appreciate the importance of what was begun 50 years ago
LVIP now comprises seven planned parksThey are home to 460 companiesThose companies provide 22000 jobsLVIP has borrowed more than 436 million in private investment over the yearsIt has paid tens of millions of property and payroll taxes
We can imagine what will happen to this area if there aren’t those jobsObviouslywe ought to appreciate the genius of LVIP’s foundersFifty years agoBethlehem Steel Corpand other integrated steelmakers were hit by the fifth nationwide strike in 15
yearsThose cycles of strikes affected every part of the local economy
Contractor Frank LMarcon told fellow board members at the Bethlehem Chamber of Commerce that a more diverse economy could be fostered if public and private leaders acted togetherIn those daysthere were no state or federal economic development programsSo18 individuals pooled 250000 of their own money and LVIP sold bonds to raise 400000 more to buy four farms along Airport RoadThe City of Bethlehem contributed planning workamended its zoning code and worked out an affordable way to add streetscurbs and sewersCompanies like Bethlehem Steel made major contributionscreating a new model for cooperation
Another important decision was made that yearIt made Lehigh Valley part of the name of the new endeavorThe late Walter Dealtreya former LVIP board presidentused to tell people that back thendecades before regionalization became part of the public vocabularyThose leaders knew their vision had to carry the stamp of big ideasThat first 226 acre tract could have been called Bethlehem Industrial Park because that’s where it was
1Lehigh Valley Industrial Park is fifty years old now[答案]T
2Lehigh Valley Industrial Park plays a very important role in the local people’s lives[答案]T
3People don’t really know the history of Lehigh Valley Industrial Park[答案]T
4Steelmakers created Lehigh Valley Industrial Park[答案]T
5Only private leaders acted together to foster a more diverse economy[答案]F
K
KindlesNooks and other ereaders are threatening the future of printed booksBut reading itself may get a boost from the devicesFor examp1ea study found that the kids felt better about reading after a course in which they used Amazon KindlesThe research is in the International journal of Applied Science and Technology
For two months199 midd1eschool students in a reading improvement class in Texas had 15 to 25 minutes every day when they were free to read on the KindleIn generalthe students felt the device improved their reading abilityAnd they tended to enjoy using an ereader
Howeversome lowleve1 readers may feel somewhat embarrassed when they are seen with a simple bookBecause they can never use fake book covers as in the past to keep their peers in the dark
26Amazon Kindles is a kind of ebooks[答案]T
27The research done in the International journal of Applied Science and Technology has lasted for two years[答案]F
28The students felt ebooks could not improve their reading ability[答案]F
29Many students tended to enjoy using an ereader[答案]T
30Some lowlevel readers used to use fake bookcovers to keep their peers in the dark[答案]T
M
PROTECTING EYES FROM COMPUTER SCREENS
Many of us spend the bulk of the day looking at computer screensReading this article means there’s a good chance you’re looking at one right now
But does looking at computer screens damage your eyesProfessor Nathan Efron does not consider computer screens harmful to our eyes
But he admits if you use one a lotyou increase your risk of becoming slightly more shortsightedwhere your eyes focus well only on close objects while more distant objects appear blurredThis is especially the case for children and young adultswhose eyes are still developing
In the shorter termprolonged viewing of a computer screen can make any slight existing vision defects more noticeableIt can also give you what is sometimes known as computer vision syndrome eye strainheadachesgritty eyes and blurry visionBut this is only temporary and can be minimized by
Adjusting the screen display so the contrast is high and the brightness feels comfortable
Having lighting that does not produce glare on the screen
Giving your eyes regular rests from looking at the screen (The Optometrists Association of Australia recommends you do this for five to ten minutes every one to two hours of computer useIt＇s a good time to make phone calls or do other tasks)
1Many of us spend much time looking at computer screens[答案]T
2Looking at computer screens for long time doesn’t damage children and young adults’ eyesight[答案]F
3Computer vision syndrome cannot be weakened[答案]F
4It’s good taking breaks during screen watching[答案]T
5Proper lighting is important to protect our eyes[答案]T
N
NEW MATERIAL CAN COOL BUILDINGS
Researchers at Stanford University have developed a new material that can move heat out of buildings and into spaceThe material can cool buildings even on hot days
The cooling material is a very thin sheet with many layers that could be placed on a roof like solar panelsHoweverinstead of turning sunlight into energy as solar panels dothe material turns heat into infrared radiation
Shanhui Fan is an electrical engineering professor at Stanford UniversityHe says that the panels have a layer of material that is like sandThe panels also act like a mirrorThey take heat out of buildings and reflect the light from the sunBoth the heat and sunlight are sent 100 kilometers into outer space
The panels are cool to the toucheven in the sunResearchers say they can reduce the indoor temperature to nearly 5 degrees Celsius below the temperature outside
MrFan says it is like having a window into spaceHe says the heat is sent directly into space without warming the airBuildings in developing countries that do not have electricity or air conditioning could use the panelsIn areas where one is offgridthere is a significant potential benefit for storing medicine or even foodIn many of these situationsbeing able to reduce the temperature is importantAnd this would provide a way to do it
The Stanford researchers described their technology in the science publication NatureThey say the main problem is creating actual cooling systems using the hightech panelsIt may be possible to develop a cooling spray technology in the next three to five years that could be used on existing solid structures
1The material can cool buildings only on cold days[答案]F
2The material turns heat into infrared radiation because it is a very thick sheet with many layers that could be placed on a roof like solar panels[答案]F
3The heat of the buildings and sunlight are sent 100 kilometers into outer space by the panels[答案]T
4The offgrid areas may use the panels to reduce the temperature of buildings to store medicine or even food[答案]T
5A cooling spray technology may be developed in the near future that could be used on existing solid structures[答案]T
P
PROTECTING EYES FROM COMPUTER SCREENS
Many of us spend the bulk of the day looking at computer screensReading this article means there’s a good chance you’re looking at one right now
But does looking at computer screens damage your eyesProfessor Nathan Efron does not consider computer screens harmful to our eyes
But he admits if you use one a lotyou increase your risk of becoming slightly more shortsighted –where your eyes focus well only on close objects while more distant objects appear blurredThis is especially the case for children and young adultswhose eyes are still developing
In the shorter termprolonged viewing of a computer screen can make any slight existing vision defects more noticeableIt can also give you what is sometimes known as computer vision syndrome – eye strainheadachesgritty eyes and blurry visionBut this is only temporary and can be minimized by
Adjusting the screen display so the contrast is high and the brightness feels comfortable
Having lighting that does not produce glare on the screen
Giving your eyes regular rests from looking at the screen (The Optometrists Association of Australia recommends you do this for five to ten minutes every one to two hours of computer useIt＇s a good time to make phone calls or do other tasks)
1Many of us spend much time looking at computer screens[答案]T
2Looking at computer screens for long time doesn’t damage children and young adults’ eyesight[答案]F
3Computer vision syndrome cannot be weakened[答案]F
4It’s good taking breaks during screen watching[答案]T
5Proper lighting is important to protect our eyes[答案]T
R
NEW MATERIAL CAN COOL BUILDINGS
Researchers at Stanford University have developed a new material that can move heat out of buildings and into spaceThe material can cool buildings even on hot days
The cooling material is a very thin sheet with many layers that could be placed on a roof like solar panelsHoweverinstead of turning sunlight into energy as solar panels dothe material turns heat into infrared radiation
Shanhui Fan is an electrical engineering professor at Stanford UniversityHe says that the panels have a layer of material that is like sandThe panels also act like a mirrorThey take heat out of buildings and reflect the light from the sunBoth the heat and sunlight are sent 100 kilometers into outer space
The panels are cool to the toucheven in the sunResearchers say they can reduce the indoor temperature to nearly 5 degrees Celsius below the temperature outside
MrFan says it is like having a window into spaceHe says the heat is sent directly into space without warming the airBuildings in developing countries that do not have electricity or air conditioning could use the panelsIn areas where one is offgridthere is a significant potential benefit for storing medicine or even foodIn many of these situationsbeing able to reduce the temperature is importantAnd this would provide a way to do it
The Stanford researchers described their technology in the science publication NatureThey say the main problem is creating actual cooling systems using the hightech panelsIt may be possible to develop a cooling spray technology in the next three to five years that could be used on existing solid structures
1The material can cool buildings only on cold days[答案]F
2The material turns heat into infrared radiation because it is a very thick sheet with many layers that could be placed on a roof like solar panels[答案]F
3The heat of the buildings and sunlight are sent 100 kilometers into outer space by the panels[答案]T
4The offgrid areas may use the panels to reduce the temperature of buildings to store medicine or even food[答案]T
5A cooling spray technology may be developed in the near future that could be used on existing solid structures
[答案]T
W
WILL EREADERS REPLACE THE CONVENTIONAL PAPER BOOK
KindlesNooks and other ereaders are threatening the future of printed booksBut reading itself may get a boost from the devicesFor examplea study found that the kids felt better about reading after a course in which they used Amazon KindlesThe research is in the International Journal of Applied Science and Technology
For two months199 middleschool students in a reading improvement class in Texas had 15 to 25 minutes every day when they were free to read on the KindleIn generalthe students felt the device improved their reading abilityAnd they tended to enjoy using an ereader
They noted the ease of carrying multiple books in one deviceand the feeling that reading was suddenly a hightech 21stcentury activity rather than a boring waste of timeAnd some lowlevel readers who might otherwise be embarrassed to be seen with a simple book liked keeping their peers in the dark about what title they were readingIn the old daysone had to use a fake bookcover to achieve that level of secrecy
1Amazon Kindles is a kind of ebooks[答案]T
2The research done in the International Journal of Applied Science and Technology has lasted for two years[答案]F
3The students felt ebooks could not improve their reading ability[答案]F
4Many students tended to enjoy using an ereader[答案]T
5Some lowlevel readers used to use fake bookcovers to keep their peers in the dark[答案]T
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