Phone batteries rarely last a full day anymore, so carrying compact chargers (小巧的充电器) is becoming normal. But many of these so-called portable devices are heavy, thick and inconvenient—until Solar Paper is developed.
Chicago engineers have designed a super-thin, lightweight panel (面板) called Solar Paper capable of charging an iPhone in two hours and many panels can be combined to boost its power. It was created by Chicago-based Yolk. After raising more than $1million online for the production, it is now available to purchase throughout the country. It comes in four versions—2.5W, 5W, 7.5W and 10w—depending on the output needed for various devices. And these different models are created by combining individual 2. 5W panels together.
A 2.5W panel will charge an iPhone 6 or Galaxy S3 in five hours. The 5W version charges the same devices but cuts changing time to two hours or three hours if it’s cloudy. The 7.5W model Solar Paper changes the devices in the same time as the 5W version but produces more energy when it is cloudy. The 10W version is ideal(理想的) for the iPad Air 2, and will charge a device in 2.5 hours. Each individual panel measures 3.5 inches× 6.7 inches×0.6inches, weighs 60g and 1.5mm thick.
Other features include a unique automatic reset (重置) function which stops and starts the Paper charging when cast with a shadow or placed in sunlight. Other solar chargers require you to re-plug the wire at these conditions. It also has a low-energy LCD screen that displays the amount of power the Solar Paper produces in real time.
1.What does the underlined word “boost” in the second paragraph mean?
A. Balance.
B. Increase
C. Possess.
D. Reduce.
2.How is Solar Paper different from other solar chargers?
A. It can be carried wherever you go.
B. It can produce more electricity.
C. It can produce power even if it’s rainy.
D. It can get reconnected automatically after a shadow.
3.What is the author’s purpose in writing the text?s
A. To introduce the strengths of solar chargers.
B. To praise Chicago engineers for their efforts.
C. To introduce a new type of solar charger.
D. To advise producers to make phone batteries last long.
4.What can we know about the Solar Paper?
A. Yolk started an online activity to fund production of Solar Paper.
B. Customers are able to buy Solar Paper all over the world.
C. The 7. 5W version is the best choice if users charge an iPad.
D. The LCD screen shows how much current an iPhone uses.
高三英语阅读理解中等难度题
Phone batteries rarely last a full day anymore, so carrying compact chargers (小巧的充电器) is becoming normal. But many of these so-called portable devices are heavy, thick and inconvenient—until Solar Paper is developed.
Chicago engineers have designed a super-thin, lightweight panel (面板) called Solar Paper capable of charging an iPhone in two hours and many panels can be combined to boost its power. It was created by Chicago-based Yolk. After raising more than $1million online for the production, it is now available to purchase throughout the country. It comes in four versions—2.5W, 5W, 7.5W and 10w—depending on the output needed for various devices. And these different models are created by combining individual 2. 5W panels together.
A 2.5W panel will charge an iPhone 6 or Galaxy S3 in five hours. The 5W version charges the same devices but cuts changing time to two hours or three hours if it’s cloudy. The 7.5W model Solar Paper changes the devices in the same time as the 5W version but produces more energy when it is cloudy. The 10W version is ideal(理想的) for the iPad Air 2, and will charge a device in 2.5 hours. Each individual panel measures 3.5 inches× 6.7 inches×0.6inches, weighs 60g and 1.5mm thick.
Other features include a unique automatic reset (重置) function which stops and starts the Paper charging when cast with a shadow or placed in sunlight. Other solar chargers require you to re-plug the wire at these conditions. It also has a low-energy LCD screen that displays the amount of power the Solar Paper produces in real time.
1.What does the underlined word “boost” in the second paragraph mean?
A. Balance.
B. Increase
C. Possess.
D. Reduce.
2.How is Solar Paper different from other solar chargers?
A. It can be carried wherever you go.
B. It can produce more electricity.
C. It can produce power even if it’s rainy.
D. It can get reconnected automatically after a shadow.
3.What is the author’s purpose in writing the text?s
A. To introduce the strengths of solar chargers.
B. To praise Chicago engineers for their efforts.
C. To introduce a new type of solar charger.
D. To advise producers to make phone batteries last long.
4.What can we know about the Solar Paper?
A. Yolk started an online activity to fund production of Solar Paper.
B. Customers are able to buy Solar Paper all over the world.
C. The 7. 5W version is the best choice if users charge an iPad.
D. The LCD screen shows how much current an iPhone uses.
高三英语阅读理解中等难度题查看答案及解析
---- The battery in my cell phone is running low.
---- I _____ that last night before we went to bed.
A．was noticing B．have noticed C．had noticed D．would notice
高三英语单项填空中等难度题查看答案及解析
—The battery in my cell phone is running low.
—I ________that last night before we went to bed.
A．was noticing B．have noticed C．would notice D．had noticed
高三英语单项填空中等难度题查看答案及解析
The days of having to carry a phone charger everywhere could soon be over. Michigan researchers have revealed a major breakthrough in harvesting energy from human motion. They say it could lead to smartphones powered for a week by the motion of a swipe(重击).
Michigan State University’s low-cost device, known as a nanogenerator, has already been tested. Scientists successfully operated an LCD touch screen, a bank of 20 LED lights and a flexible keyboard, all with a simple touching or pressing motion and without the aid of a battery. The groundbreaking findings, published in the journal Nano Energy, suggest “We’re on the path toward wearable devices powered by human motion,” said Nelson Sepulveda, associate professor of electrical and computer engineering and lead researcher of the project.
“What I foresee, relatively soon, is the capability of not having to charge your cell phone for an entire week, for example, because that energy will be produced by your movement,” said Sepulveda, whose research is funded by the National Science Foundation.
Electrical energy is created when the device is compressed by human motion. The completed device is as thin as a sheet of paper. The device used to power the LED lights was palm-sized, while the device used to power the touch screen was as small as a finger. Advantages such as being lightweight, flexible and low-cost could make it a promising and alternative method in the field of Mechanical-energy harvesting.
The device also becomes more powerful when folded. Sepulveda said, “You can start with a large device, but when you fold it once, and again, and again, it’s much smaller and has more energy. Now it may be small enough to put in a specially made heel of your shoe so it creates power each time your heel strikes the ground.”
Sepulveda and his team are also developing technology that would transmit the power generated by the heel strike to, say, a wireless headset.
1.Who is Nelson Sepulveda?
A. The major researcher in the project. B. A professor of engineering.
C. The fund supplier of the research. D. A journalist writing for Nano Energy.
2.The underlined word device in the 2nd paragraph is closest in meaning to ________.
A. keyboard B. smartphone C. screen D. machine
3.From the passage we know that the nanogenerator ________.
A. becomes more powerful when kept flat
B. has already come into market in the USA
C. is lightweight and flexible though expensive
D. makes it possible to produce power by walking
4.The purpose of the passage is to ________.
A. persuade people to buy the device B. bring in a new way to save energy
C. introduce a breakthrough in science D. honor Nelson Sepulveda for his contributions
高三英语阅读理解困难题查看答案及解析
So that in spite of the rare disease, he managed to live as rich and full a life as we do.
A. optimistic and determined Marty was B. was Marty optimistic and determined
C. Marty was optimistic and determined D. optimistic and determined was Marty
高三英语单项填空中等难度题查看答案及解析
So _______that in spite of the rare disease, he managed to live as rich and full a life as we do.
A. optimistic and determined was Marty
B. was Marty optimistic and determined
C. Marty was optimistic and determined
D. optimistic and determined Marty was
高三英语单项填空简单题查看答案及解析
---- How was the television debate last night?
---- Super! Rarely______ so much media attention.
A. a debate attracted B. did a debate attract
C. a debate did attract D. attracted a debate
高三英语单项填空简单题查看答案及解析
---- How was the television debate last night?
---- Super! Rarely______ so much media attention.
A. a debate attracted B. did a debate attract
C. a debate did attract D. attracted a debate
高三英语单项填空中等难度题查看答案及解析
--How was the televised debate last night?
--Super! Rarely ______ so much media attention.
A. a debate attracted B. did a debate attract
C. a debate did attract D. attracted a debate
高三英语单项填空中等难度题查看答案及解析
--- How was the televised debate last night?
--- Super! Rarely ______ so much media attention.
A. a debate attracted B. did a debate attract
C. a debate did attract D. attracted a debate
高三英语单项填空中等难度题查看答案及解析