科目:高中英语 来源:福建省南平市毕业班3月质量检测英语试卷(有答案) 题型:阅读理解
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
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科目:高中英语 来源:江西省招生全国统一考试仿真卷英语(五) 题型:书面表达
学生英文报近期开辟专栏,讨论学习习惯问题,习惯成就未来,请你结合自身学习实际,按以下提示,用英文为该专栏写一篇稿件。
1.说明学习习惯与学习效果之间的关系;
2.介绍一种好的学习习惯并提出养成该习惯的建议;
3.描述自己在学习习惯方面存在的某个问题并给出改进措施。
参考词汇:学习习惯:learning habit 学习效果:learning effect
注意: 1. 词数100词左右; 2. 可适当增加细节。
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科目:高中英语 来源:2017届辽宁省沈阳市省示范协作校高三第一次模拟考试英语试卷(解析版) 题型:阅读理解
Shark Keeper
Get up close and very personal with the Aquarium’s largest exhibit and its biggest predators(食肉动物) with the new Shark Keeper program! After each participant prepares to feed the sharks and other fishes in the 120,000-gallon Lost City of Atlantis Exhibit, they will then get the once-in-a-lifetime chance to feed our sand tiger sharks! Participants will also experience a tour of other behind-the-scenes animal care work areas and take home a real-life shark tooth.
Program Outline:
Greeting from Educator
Educational Program: misunderstandings about sharks, biology, pictures, shark tooth comparisons, animal overview, what to expect during the experience.
*Behind-the-scenes food prep
*Brief overview of Safety and Policies
*Feeding
Schedule:
Mondays, Thursdays, and Saturdays at 3:40 pm
Session: 3:40 pm
Length: 60 minutes
Requirements: All participants must be 16+.
Price: $50.00, plus Admission(Members: $45.00). Space is currently limited to three participants per scheduled session.
How to Book: Phone: 631 208 9200, ext.H2O(426)
Online: When purchasing your Admission ticket, please select the Shark Keeper add-on under the Aquatic Adventures section of the shopping cart.
Guests with Special Needs:
Long Island Aquarium&Exhibition Center makes every effort to accommodate guests with special needs. Please be aware that to participate in this program, guests must be able to navigate(导航) the animal habitat spaces with minimum assistance, and must be able to understand and take direction in English from staff members. To ensure the best experience, please contact the Call Center at 631 208 9200, ext. H2O(426) to discuss your individual needs.
Cancellations(取消):
There is a 72-hour cancellation policy. Any cancellation made within 72 hours will not be refunded. No-shows will not be refunded or rescheduled. Guests arriving late (after the required program check-in time) will not be permitted to participate in the program and will not be refunded or rescheduled. We encourage guests to arrive at the Aquarium with plenty of time to park, enter, and check into the program. Adventurers should report to the Main Entrance at least ten minutes ahead. The sessions will begin quickly at the scheduled time. Please plan accordingly.
1.After joining the program, you will ________.
A. feed sharks once a life time
B. meet the biggest predators of sharks
C. draw some pictures of sharks
D. get a real shark tooth as a souvenir
2.If you want to give up the program, you’d better ________.
A. report it to the center 10 min before the session
B. report the center 3 days in advance
C. manage your plan again with 72 hours
D. expect to refund from the center
3.What information can we learn from the program?
A. There is no limit to the age of participants.
B. You need to pay $95 at least for the program.
C. You can book the program in advance online.
D. A session is scheduled for 3 children every week.
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科目:高中英语 来源: 题型:选择题
A. | dance | B. | will dance | C. | had danced | D. | danced |
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科目:高中英语 来源: 题型:选择题
A. | accurate | B. | punctual | C. | efficient | D. | reasonable |
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科目:高中英语 来源: 题型:选择题
A. | motivation | B. | qualification | C. | talent | D. | technique |
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科目:高中英语 来源: 题型:选择题
A. | mightn't | B. | mustn't | C. | needn't | D. | couldn't |
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