Angad Rekhi, a graduate student and an assistant professor of electrical engineering, has developed a wake-up receiver. This wake-up receiver has many potential applications, particularly in designing the next generation of net worked devices, including so called “smart” devices that can communicate directly with one another without human intervention (介入).
Once attached to a device, a wake-up receiver listens for a unique ultrasonic(超声波)pattern that tells it when to turn the device on. It needs only a very small amount of power to maintain this constant listening, so it still saves energy overall while extending the battery life of the larger device. A well-designed wake-up receiver also allows the device to be turned on from a significant distance.
Given the increased interest in networked devices, researchers and industry organizations are starting to define what features and techniques will become standard. Regardless of whether this ultrasound wake-up receiver is among these standard designs, it is likely wake-up receivers of some kind will be combined into commercial applications soon.
By comparison, the ultrasound wake-up receiver requires a battery but has much greater range than the wirelessly powered devices, while still maintaining a long lifetime due to extremely low power draw. These two technologies-wireless power and wake-up receivers-would likely serve different purposes but both indicate at a turning point in devices that make up the Internet of Things.
“In light of a long-promised future where interconnected, autonomous, widespread and unremarkable technologies make life easier, the networked devices available now, like video doorbells and app-enabled lights, seem like rather slight advances.” the researchers said. They believe technologies like theirs could help cross the gap between the Internet of Things as we know it and the Internet of Things at its best-whatever that may be.
1.Which of the following is an advantage of the wake-up receiver?
A. It requires no signal. B. It is very power saving.
C. It can make the battery larger. D. It must be fixed to another device.
2.What do we know about by comparing the wireless power with wake-up receivers?
A. One can replace the other. B. The wake-up receiver is better.
C. Both have their own advantages. D. The wirelessly powered device has more uses.
3.What do the researchers feel about their technologies mentioned in the last paragraph?
A. They make the Internet cheaper.
B. They make the Internet more popular.
C. They are not useful devices for the Internet.
D. They are beneficial to the use of the Internet.
4.What can be the best title for the text?
A. Wide Use of Advanced Equipment B. Development of the Internet Devices
C. New Technique for Waking Up Devices D. Difference between Two Wake-up Receives
高三英语阅读理解困难题
Angad Rekhi, a graduate student and an assistant professor of electrical engineering, has developed a wake-up receiver. This wake-up receiver has many potential applications, particularly in designing the next generation of net worked devices, including so called “smart” devices that can communicate directly with one another without human intervention (介入).
Once attached to a device, a wake-up receiver listens for a unique ultrasonic(超声波)pattern that tells it when to turn the device on. It needs only a very small amount of power to maintain this constant listening, so it still saves energy overall while extending the battery life of the larger device. A well-designed wake-up receiver also allows the device to be turned on from a significant distance.
Given the increased interest in networked devices, researchers and industry organizations are starting to define what features and techniques will become standard. Regardless of whether this ultrasound wake-up receiver is among these standard designs, it is likely wake-up receivers of some kind will be combined into commercial applications soon.
By comparison, the ultrasound wake-up receiver requires a battery but has much greater range than the wirelessly powered devices, while still maintaining a long lifetime due to extremely low power draw. These two technologies-wireless power and wake-up receivers-would likely serve different purposes but both indicate at a turning point in devices that make up the Internet of Things.
“In light of a long-promised future where interconnected, autonomous, widespread and unremarkable technologies make life easier, the networked devices available now, like video doorbells and app-enabled lights, seem like rather slight advances.” the researchers said. They believe technologies like theirs could help cross the gap between the Internet of Things as we know it and the Internet of Things at its best-whatever that may be.
1.Which of the following is an advantage of the wake-up receiver?
A. It requires no signal. B. It is very power saving.
C. It can make the battery larger. D. It must be fixed to another device.
2.What do we know about by comparing the wireless power with wake-up receivers?
A. One can replace the other. B. The wake-up receiver is better.
C. Both have their own advantages. D. The wirelessly powered device has more uses.
3.What do the researchers feel about their technologies mentioned in the last paragraph?
A. They make the Internet cheaper.
B. They make the Internet more popular.
C. They are not useful devices for the Internet.
D. They are beneficial to the use of the Internet.
4.What can be the best title for the text?
A. Wide Use of Advanced Equipment B. Development of the Internet Devices
C. New Technique for Waking Up Devices D. Difference between Two Wake-up Receives
高三英语阅读理解困难题查看答案及解析
In the lecture, the professor told his students how to write an ______ of a graduate paper, expressing the main argument.
A. account B. abstract C. application D. address
高三英语单项填空简单题查看答案及解析
Student Activities Assistant Bluegrass Community and Technical College $10 an hour Duties: This position will support the Student Activities Coordinator. The Student Activities office serves as co-advisor and promotes student life at the college. Make Student Photo IDs and do general office work. Working Days: Monday—Thursday Working Hours: 9:30 AM—2:30 PM Qualifications: High school diploma and one year of related work experience. Fun, dependable, and excellent customer service. |
Weekend English Teacher Mosher Tech $30 an hour Duties: Teach English to young learners between 5-12 years of age through our platform. Teachers will be teaching classrooms with up to 4 students. Each in-lesson time is 30 minutes. Training and support provided. Working Hours: 20 hours a week Qualifications: English teaching certificates. Prior teaching experience. A computer with stable internet connection and clear audio/video capacity. |
Reading/Math Tutor Butler Community College $22.25 an hour Duties: The Reading/Math Tutor will be responsible for reading aloud and listening to students read in a group. They will tutor students by assisting with academic assignments for reading or math and perform simple duties assigned by the classroom teacher. Qualifications: Strong attention to details and problem solving skills. Ability to establish and maintain productive work relationships with staff and students. |
Registrar Assistant The University of Chicago $15.25 an hour Duties: This individual will work from December to March at approximately 20 hours per week. In peak periods, more hours may be available, and the assistant may be asked to work evening hours if needed. The assistant will create various reports on examinations, assist in exam administration and print course evaluations to help assure the department runs smoothly and efficiently during this period. Qualifications: High level of accuracy with repeated tasks. Ability to work independently as needed. Minimum of 2 years of previous office experience required. |
1.As a Registrar Assistant, you need to _________.
A.deal with general office work
B.write a variety of exam reports
C.give instructions on course evaluations
D.work 20 hours a week for a whole year
2.Which job doesn’t require previous working experience?
A.Student Activities Assistant B.Weekend English Teacher
C.Reading/Math Tutor D.Registrar Assistant
3.We can probably read this passage from _________.
A.a textbook B.a school website
C.a travel guide D.a science magazine
高三英语阅读理解中等难度题查看答案及解析
Years ago a professor gave a group of graduate students this assignment:Go to the slums(贫民窟).Take 200 boys between the ages of 12 and 16, investigate their _____and environment and then_____their chances for the future. The students,after ______ social statistics,talking to the boys and compiling(汇编)much data,______that 90 percent of the boys would spend some time in ______.
Twenty five years later another group of graduate students were given the job of _____the previous prediction. They went back to the _______area. Some of the boys—now______—were still there,a few had died and some has moved away. But they managed to ______180 of the original 200.They found that only four of the boys had ever been sent to prison.
Why was it that these men,who had lived in a breeding place of _____,had such surprisingly ______record?The researchers were _______told. “Well,there was a______.”
They investigated ______and found that in 78 percent of the ______it was the same woman. The researchers went to the teacher,now living in a home for______teacher .How had she had this remarkable_____on that group of children?Could she give them any reason why these boys______ her?“No,”she said,“I really couldn't.” And then,_____over the years,she said musingly(沉思地),more to herself than to her questioners,“I______these boys.” The researchers finally realized that it was the teacher's care that made a difference.
1.A. safety B. nationalities C. health D. backgrounds
2.A. advise B. increase C. predict D. check
3.A. consulting B. preparing C. offering D. showing
4.A. discussed B. concluded C. introduced D. expected
5.A. business B. school C. hospital D. prison
6.A. testing B. explaining C. finding D. making
7.A. special B. same C. only D. lonely
8.A. workers B. teenagers C. men D. students
9.A. record B. find C. know D. trace
10.A. disease B. magic C. disaster D. crime
11.A. reliable B. good C. detailed D. bad
12.A. normally B. gradually C. continually D. nearly
13.A. teacher B. doctor C. director D. friend
14.A. too B. instead C. already D. further
15.A. cases B. manners C. states D. ways
16.A. determined B. well-known C. retired D. skilled
17.A. technique B. influence C. courage D. advantage
18.A. remembered B. rewarded C. treated D. frightened
19.A. looking around B. going on C. working out D. thinking back
20.A. persuaded B. reminded C. loved D. taught
高三英语完形填空困难题查看答案及解析
Professor Smith, along with his assistants, on the project day and night to meet the deadline.
A. work B. working
C. is working D. are working
高三英语单项填空中等难度题查看答案及解析
Professor Smith, along with his assistants, ______ on the project day and night to meet the deadline.
A. work B. working C. is working D. are working
高三英语单项填空中等难度题查看答案及解析
Professor Smith, along with his assistants, ______ on the project day and night to meet the deadline.
A. work B. working C. is working D. are working
高三英语单项填空中等难度题查看答案及解析
Professor Smith, along with his assistants, ________on the project day and night to meet the deadline.
A. work B. working C. is working D. are working
高三英语单项填空中等难度题查看答案及解析
Professor Smith, along with his assistants, ________ on the project day and night to meet the deadline.
A.work | B.working | C.are working | D.is working |
高三英语单项填空中等难度题查看答案及解析
It was my first year of graduate school and my professor was standing on the platform. He was telling us about a ________he made years ago.
About a decade earlier, my professor had been a sales manager at a large company. They were ________a national campaign and preparing for a major brand launch. My professor was________the operation.
For almost two months before the launch day, he was ________all over the country to talk with major partners.________crossing the country on flights, he was also trying to ________his department. For weeks he would have meetings all day, answer________and phone calls all night, and________three or four hours of sleep.
The week before the big launch day, his body________. He had to be rushed to the hospital. Major organs had started to________from the long-term stress. He spent the next eight days in hospital, ________to do anything as the launch day came and went.
Imagine that your ________and energy are a bucket of water. In your daily life, there are things that ________your bucket up. These are inputs like sleep, nutrition, laughter, and other forms of ________. There are also forces that drain(使排出) the water from your bucket. These are________like stress from work or school, relationship problems, or other forms of anxiety.
The forces that drain your bucket aren’t all ________. To live a productive life, it can be important to have some things________out of your bucket. Working hard in the gym, at school, or at the office allows you to produce something ________. But positive outputs are still outputs and they drain your energy ________. These outputs are gradual. Even a little leak can result in significant water loss________ time.
1.A. prediction B. decision C. fortune D. mistake
2.A. at the end of B. in the middle of C. at the mercy of D. on the way to
3.A. sponsoring B. leading C. assisting D. adopting
4.A. researching B. driving C. flying D. inspecting
5.A. Before B. Though C. While D. Since
6.A. run B. promote C. expand D. observe
7.A. emails B. charges C. problems D. doors
8.A. pull in B. squeeze in C. take in D. bring in
9.A. give up B. give in C. give out D. give away
10.A. disappear B. suffer C. function D. fail
11.A. ready B. unwilling C. eager D. unable
12.A. health B. status C. success D. reputation
13.A. break B. pack C. fill D. cover
14.A. rest B. recovery C. entertainment D. accommodation
15.A. restrictions B. consequences C. examples D. outputs
16.A. uncontrollable B. unpredictable C. uncomfortable D. unfavorable
17.A. flowing B. slipping C. escaping D. growing
18.A. typical B. valuable C. casual D. exotic
19.A. suddenly B. surprisingly C. partly D. thoroughly
20.A. over B. beyond C. after D. before
高三英语七选五中等难度题查看答案及解析