Weather could power the next generation of smart windows. Researchers have created glass by harvesting energy from wind and precipitation(降水).The approach offers an alternative to other smart windows powered by batteries, solar panels, and even standard power outlets. “The creation represents a new kind of renewable energy source”, says Liming Dai, a nanomaterial engineer at Case Western Reserve University in Cleveland, Ohio, who was not involved in the research.
Smart glass, which changes its characteristics to block out light or heat, has been around for decades. Common examples include glare-fighting rearview(后视) car mirrors and windows that change color for energy savings and privacy. But many are expensive, and people are still looking for eco-friendly ways to power the windows. Batteries and plug-in outlets aren’t apparently “green”, and built-in solar panels can cloud or hide parts of the glass.
In experiments, the glass produced up to 130 milliwatts per square meter, enough to power a pacemaker or a smart phone while it’s asleep, the team reported online last month in ACS Nano. This output might suit many applications, such as being a power source for home or office electronics, says co-developer and scientist Zhong Wang of the Georgia Institute of Technology in Atlanta Since their first project in 2012, a light-up sidewalk powered by footsteps, he and his colleagues have miniaturized their generators to create everything from self-cleaning keyboards to sensors for security systems.
But Wang and colleagues still have more work to do before this smart glass is ready for commercialization. Now, the glass has no way to store the energy it creates. To solve this problem, Dai says, transparent supercapacitors(超级电容器) could be placed into the glass without decreasing visibility.
For now, the team wants to improve the energy efficiency of their nanogenerators. These tiny power plants can convert about 60% of the mechanical energy that they encounter into electricity. “The output power is a constant goal,” Wang says. “Free energy surrounds us, and anything can happen if you take control of it."
1.What is unique about the smart glass?
A.It can protect privacy. B.It is more expensive.
C.It is powered by weather. D.It can block out light and heat.
2.What is the main idea of paragraph 3?
A.The research history of Zhong Wang.
B.The experimental process of Zhong Wang.
C.The research theory of Zhong Wang’s team.
D.The experimental findings of Zhong Wang's team.
3.What is the drawback of the smart glass?
A.It cannot suit the supercapacitors. B.It cannot keep its produced electricity.
C.It cannot power a smart phone. D.It cannot change its color according to weather.
4.Which of the following best explains “convert” underlined in the last paragraph?
A.Transform. B.Consume.
C.Waste. D.Reserve.
高二英语阅读理解中等难度题
Weather could power the next generation of smart windows. Researchers have created glass by harvesting energy from wind and precipitation(降水).The approach offers an alternative to other smart windows powered by batteries, solar panels, and even standard power outlets. “The creation represents a new kind of renewable energy source”, says Liming Dai, a nanomaterial engineer at Case Western Reserve University in Cleveland, Ohio, who was not involved in the research.
Smart glass, which changes its characteristics to block out light or heat, has been around for decades. Common examples include glare-fighting rearview(后视) car mirrors and windows that change color for energy savings and privacy. But many are expensive, and people are still looking for eco-friendly ways to power the windows. Batteries and plug-in outlets aren’t apparently “green”, and built-in solar panels can cloud or hide parts of the glass.
In experiments, the glass produced up to 130 milliwatts per square meter, enough to power a pacemaker or a smart phone while it’s asleep, the team reported online last month in ACS Nano. This output might suit many applications, such as being a power source for home or office electronics, says co-developer and scientist Zhong Wang of the Georgia Institute of Technology in Atlanta Since their first project in 2012, a light-up sidewalk powered by footsteps, he and his colleagues have miniaturized their generators to create everything from self-cleaning keyboards to sensors for security systems.
But Wang and colleagues still have more work to do before this smart glass is ready for commercialization. Now, the glass has no way to store the energy it creates. To solve this problem, Dai says, transparent supercapacitors(超级电容器) could be placed into the glass without decreasing visibility.
For now, the team wants to improve the energy efficiency of their nanogenerators. These tiny power plants can convert about 60% of the mechanical energy that they encounter into electricity. “The output power is a constant goal,” Wang says. “Free energy surrounds us, and anything can happen if you take control of it."
1.What is unique about the smart glass?
A.It can protect privacy. B.It is more expensive.
C.It is powered by weather. D.It can block out light and heat.
2.What is the main idea of paragraph 3?
A.The research history of Zhong Wang.
B.The experimental process of Zhong Wang.
C.The research theory of Zhong Wang’s team.
D.The experimental findings of Zhong Wang's team.
3.What is the drawback of the smart glass?
A.It cannot suit the supercapacitors. B.It cannot keep its produced electricity.
C.It cannot power a smart phone. D.It cannot change its color according to weather.
4.Which of the following best explains “convert” underlined in the last paragraph?
A.Transform. B.Consume.
C.Waste. D.Reserve.
高二英语阅读理解中等难度题查看答案及解析
NASA has opened the door to the next generation of space discovery by announcing great plans for a base for humans to live on the surface of the moon forever.
The project to build a base on the moon will begin soon after 2020, with astronauts living there within four years.
The project comes after several excellent scientists and environmentalists asked humans to look beyond Earth to ensure the survival of the species (物种).
Eventually, the moon will be a base for humans to explore the solar system and one day land on Mars.
NASA began planning for the first moon landing since 1972 when George Bush, the US president, announced his new plan for space exploration four years ago.
NASA has already talked about the design of the Orion spacecraft that will replace the old space shuttle fleet in 2010.
The plan for the moon base, however, is the first detailed explanation of how NASA intends to prepare for the first manned exploration of deep space and a possible Mars mission within 30 years.
Scientists also believe that the south pole on the moon contain rich natural gases such as the rare helium-3 that could be used as fuel for the generation of nuclear power. Besides, teams of astronauts living there for six months at a time would mine for hydrogen and oxygen to make water and possibly rocket fuel.
1.The reasons why NASA has begun the plan to explore space include the followings except ________.
A. to protect Earth
B. to explore deep space
C. to finish Mars mission
D. to show how powerful the USA is
2.In the future, when people fly to the moon, they will probably not bring with them too much ________
A. hydrogen B. food C. oxygen D. water
3.The passage mainly talks about ________.
A. the USA’s new plan for space exploration
B. how to build a base on the moon
C. why to ensure the survival of the species
D. where to get new natural resources
高二英语阅读理解中等难度题查看答案及解析
NASA has opened the door to the next generation of space discovery by announcing great plans for a base for humans to live on the surface of the moon forever.
The project to build a base on the moon will begin soon after 2020, with astronauts living there within four years.
The project comes after several excellent scientists and environmentalists asked humans to look beyond Earth to ensure the survival of the species (物种).
Eventually, the moon will be a base for humans to explore the solar system and one day land on Mars.
NASA began planning for the first moon landing since 1972 when George Bush, the US president, announced his new plan for space exploration four years ago.
NASA has already talked about the design of the Orion spacecraft that will replace the old space shuttle fleet in 2010.
The plan for the moon base, however, is the first detailed explanation of how NASA intends to prepare for the first manned exploration of deep space and a possible Mars mission within 30 years.
Scientists also believe that the south pole on the moon contain rich natural gases such as the rare helium-3 that could be used as fuel for the generation of nuclear power. Besides, teams of astronauts living there for six months at a time would mine for hydrogen and oxygen to make water and possibly rocket fuel.
1.The reasons why NASA has begun the plan to explore space include the followings except ________.
A. to protect Earth
B. to explore deep space
C. to finish Mars mission
D. to show how powerful the USA is
2.In the future, when people fly to the moon, they will probably not bring with them too much ________
A. hydrogen B. food C. oxygen D. water
3.The passage mainly talks about ________.
A. the USA’s new plan for space exploration
B. how to build a base on the moon
C. why to ensure the survival of the species
D. where to get new natural resources
高二英语阅读理解中等难度题查看答案及解析
NASA has opened the door to the next generation of space discovery by announcing great plans for a base for humans to live on the surface of the moon forever.
The project to build a base on the moon will begin soon after 2020, with astronauts living there within four years.
The project comes after several excellent scientists and environmentalists asked humans to look beyond Earth to ensure the survival of the species (物种).
Eventually, the moon will be a base for humans to explore the solar system and one day land on Mars.
NASA began planning for the first moon landing since 1972 when George Bush, the US president, announced his new plan for space exploration four years ago.
NASA has already talked about the design of the Orion spacecraft that will replace the old space shuttle fleet in 2010.
The plan for the moon base, however, is the first detailed explanation of how NASA intends to prepare for the first manned exploration of deep space and a possible Mars mission within 30 years.
Scientists also believe that the south pole on the moon contain rich natural gases such as the rare helium-3 that could be used as fuel for the generation of nuclear power. Besides, teams of astronauts living there for six months at a time would mine for hydrogen and oxygen to make water and possibly rocket fuel.
1.When was the plan to explore space first announced according to the passage?
A．In 1972. B．In 1950. C．In 1968. D．In 2020.
2.The reasons why NASA has begun the plan to explore space include the followings except ________.
A．to protect Earth B．to explore deep space
C．to finish Mars mission D．to show how powerful the USA is
3.In the future, when people fly to the moon, they will probably not bring with them too much ________
A．hydrogen B．food C．oxygen D．water
4.The passage mainly talks about ________.
A．the USA’s new plan for space exploration
B．how to build a base on the moon
C．why to ensure the survival of the species
D．where to get new natural resources
高二英语阅读理解困难题查看答案及解析
Our school club ‘Poets of the Next Generation’ is a literary club that was started by our English teacher Mr. Owen. We ____ on the last Friday of every month to ____ about poem and poets that we like. In the club meetings, we ____ select poems that we love, and then read ____ aloud. We also discuss poems in our meetings.
___ I attended the first meeting, I ____ to write a poem and I had to read it to the club. I was a little ____ at first, but everyone was so nice and friendly that I soon stopped worrying. I once read a ____ about nature in the school courtyard. I chose an old tree and gathered everyone under it before I ____. The club ____ said it was one of the best compositions they had heard.
1.A. get B. go C. meet D. decide
2.A. say B. speak C. tell D. talk
3.A. first B. just C. last D. then
4.A. it B. that C. them D. one
5.A. After B. before C. though D. when
6.A. require B. required C. was required D. have been required
7.A. surprised B. nervous C. frightened D. excited
8.A. poem B. report C. news D. story
9.A. opened B. behaved C. read D. handled
10.A. members B. teachers C. students D. persons
高二英语完形填空简单题查看答案及解析
According to the findings of a new study, telling kids they’re smart enhances the idea that intelligence is a genetic gift rather than a skill that ran he improved, and children who think their intelligence is fixer! are not likely to pay attention to mistakes and recover from them.
In the study publisher! online, researchers looked at 123 children who were about 7. The team assessed the children to determine whether they had a “growth mindset（思维定式）”. They asked the children to complete a fast-paced computer task while their brain activities were recorded. During the recording, researchers noted that brain activity stopped within a half-second after making a mistake. The larger the brain response was, the more the child focused on the error.
Based on the data they collected, the researchers concluded that children with a “growth mindset” were much more likely to have a larger brain response after making a mistake, and in turn were more likely to improve their performance by paying closer attention to the task after making an error.
For parents, the lessons are clear: for starters, don’t pay praises that suggest intelligence is fixed. If a child hands you an A test, don’t say “You are smart!” Instead say “Wow, that study really paid off!”
Second, focus on using errors to work together and learn. Many parents and teachers shy away from mentioning a child’s mistakes, telling them “It’s OK. You’ll get it next time.” without giving them the opportunity to figure out what went wrong. Instead, it’s better to tell the child that mistakes happen, and to pay attention and work to figure out where and how they made the mistake.
1.What’s the resold of telling kids they’re clever?
A. They may think efforts are useful.
B. They may be attentive to their mistakes.
C. They may think they’re very clever.
D. They may think intelligence is fixed at birth.
2.How would children with a “growth mindset” react to their mistakes in the study?
A. They would be more careful to their mistakes and more likely to improve.
B. They had a smaller response and would pay no attention to their errors.
C. They would he less attentive to their errors and pay little attention to their mistakes.
D. They are more likely to have a larger brain response before making a mistake.
3.What does the author advise the parents to do when their kids make mistakes?
A. Comfort the kids and stress the efforts they made.
B. Tell them it’s OK and they will get it next time.
C. Praise the progress they made but not their smartness.
D. Let the child think about what mistakes they made.
4.What floes the passage mainly talk about?
A. Praise the children for their intelligence.
B. How to Heal with kids’ performance at school.
C. Proper response to kids’ mistakes and progress.
D. The reflection on kids’ smartness and development.
高二英语阅读理解困难题查看答案及解析
A new “smart bin” could spell the end of environment - conscious families spending hours sorting tins, cartons, bottles, and cardboard for recycling. The invention, which automatically sorts rubbish into recycling categories, is being trialed in Poland and is set to go on sale in the UK within a few years.
The bin, designed by start - up company Bin. E, recognizes different types of waste via a system positioned inside the bin which uses sensors, image recognition and artificial intelligence. Once waste is placed inside, the camera and sensors identify its type and place it in one of the smaller bins. Then it compresses (压缩) the waste so it occupies less space.
News of the launch showed that more than a million households are being forced to accept bin collections every three or four weeks, because councils are trying to force them to recycle more. Data collected by The Telegraph has showed at least 18 areas have moved or will shortly be moving to three - weekly rubbish collections, while a further three have adopted or are trialing four - weekly collections. While reducing general bin collections, councils are increasing the frequency of recycling collections in a bid to change people’s behaviour. It is thought that the bin could be stocked by department stores such as John Lewis, which said it is introducing new hi - tech recycling bins to satisfy increasing customer appetite for them. Matt Thomas, a utility (家用设施) seller at John Lewis, said, “We’ve recently seen a jump in specialist bins sales, with a 25 percent increase in the last few months alone. We have noticed our customers are becoming more and more sustainability focused, choosing dual compartment (双格) recycling bins that make it far easier to recycle different types of waste. In response to this demand, we are really excited to introduce a new voice and sensor activated smart bin this autumn / winter season — designed to use new technology to make recycling more efficient and functional for the everyday home.”
1.What can we know about the smart bin?
A. It has entered the UK market.
B. It breaks up the garbage quickly.
C. It can classify different kinds of rubbish.
D. It expands its space with the increase of garbage.
2.What does the underlined sentence in the last paragraph mean?
A. The cost of producing the bins has raised.
B. The smart bins have been the best sellers.
C. The stores have sold out the new bins in a very short time.
D. The sales volume of the recycling bins has increased suddenly.
3.What can we infer from Matt Thomas, words?
A. People can get the smart bins at a low price.
B. People always spend much time in rubbish collections.
C. More and more hi - tech bins are designed for customers.
D. People pay more attention to environmental protection than before.
4.Which of the following tan be the best title for the text?
A. Smart Bins in the United Kingdom
B. Councils’ Call for Rubbish Collection
C. A Smart Bin That Sorts Different Rubbish
D. The Good News to Environment - Conscious Families
高二英语阅读理解困难题查看答案及解析
"We can't go out in this weather, "said Bob, _____ out of the window.
A. looking B. to look
C. looked D. having looked
高二英语单项填空中等难度题查看答案及解析
“We can’t go out in this weather，”said Bob，________out of the window.
| A．looking | B．to look | C．looked | D．having looked |
高二英语单项填空中等难度题查看答案及解析
---It was dangerous to throw that bottle out of the window. You could have hurt someone.
---I’m so sorry! I _______ .
A．am not thinking B．wasn’t thinking C．haven’t thought D．don’t think
高二英语单项填空简单题查看答案及解析