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
I have a neighbor who is a capable, fashionable, seventy-year-old, single woman. Her name is Grace. Grace was laid off from her job a little over two years ago and has been living off her savings ever since but not officially "retired". Grace called me up one day about this time last year and asked if I had a ladder. She needed to clean out her gutters (水槽) on the roof and wanted me to hold the ladder.
She didn’t want me to climb up and clean the gutters. She just wanted me to hold the ladder. As it happened I did have a ladder. I said: “The leaves are going to fall off the trees in a month, why don’t we wait till they finish and do it then?” She agreed and naturally we didn’t talk about it again until spring. Spring in Tennessee is wild and we talked about it over the course of three weeks in which it rained nearly every day, then I got busy and Grace went into seclusion (隐居).
A couple of weeks ago, she told me she’d been spending too much money and decided to apply for a bar tending job at a local hotel. “Now I don’t know about you all but I’d never considered what it would be like to apply for and begin a new job at the age of seventy. I’m fifty-three and the older I get, the more I think about how great it’ll be if I can just get out of bed when I’m seventy.” Anyway, she got the job, serving the bar and tending banquets at the hotel.
The day when she left for her training at 6 am, I walked across the street with my ladder and cleaned out her gutters.
1.What did Grace want the author to do?
A. Make a ladder. B. Retire completely.
C. Lend her a ladder. D. Give her suggestions.
2.When did the author advise Grace to clean her gutters?
A. In early spring. B. In rainy season.
C. In time of leaves falling. D. In time of few leaves on trees.
3.What was the author’s neighbor doing when the author wrote the text?
A. Working at a hotel. B. Training for her job.
C. Cleaning out her house. D. Walking with the author.
4.What did the author think of her neighbor’s re-employment?
A. Valuable. B. Impossible.
C. Reasonable. D. Unbelievable.
Incredible Women You Didn't Learn About in History Class
Here are the stories of women you may not know about, but definitely should
◆Maria Sibylla Merian
Born in Germany in 1647, Merian was fascinated by insects, and she began collecting, studying, and drawing them when she was as young as 13. She was one of the few naturalists of her time to actually study live insects. It was through her study of caterpillars(毛毛虫) that she discovered the truth about their life cycles. Her work provided major contributions to the field of entomology（昆虫学）。
◆ Murasaki Shikibu
Murasaki Shikibu, a Japanese woman, was widely considered to be the world’s first novelist. She was a noble woman living in Japan around the year 1000 AD. She wrote a two-part novel called The Tale of Genji, which tells a riches-to-rags story about the son of a Japanese emperor forced to live as a common man. The Tale of Genji is widely considered to be a masterpiece of Japanese literature.
◆ Ada Lovelace
Ada was working to design early computing machines that she hoped would be able to quickly solve math problems. In addition to designing this early computer program, she also was first to suggest that these computers might be able to do more than, well, calculate. She imagined them doing everything, from producing images to composing music.
◆ Lucy Stone
Born in 1818, Stone married a fellow activist and changed her name, but decided to change it back a year later. She held the belief that "a wife should no more take her husband's name than hers." She became the first American married woman to keep her maiden name for her entire life. Stone was also one of the founding members of the American Equal Rights Association and fought for the ending of slavery.
1.What can readers learn about from The Tale of Genji?
A. Ancient Japanese culture.
B. Development of computer.
C. Research on living things.
D. Modern life of Japanese women.
2.What do Maria Sibylla Merian and Ada Lovelace have in common?
A. They were pioneers in computer.
B. They devoted themselves to science.
C. They created masterpieces of literature.
D. They made progress in studying Insects
3.Which of the following women fought for human rights?
A. Lucy Stone B. Ada Lovelace
C. Murasaki Shikibu D. Maria Sibylla Merlan
阅读下面短文，根据所给情节进行续写，使之构成一个完整的故事。
It had been some time since Jack had seen the old man. College, carrier, and life itself got in the way. In fact, Jack moved clear across the country in pursuit(追寻）of the dreams. There, in the rush of his busy life. Jack had little time to think about the past and often no time to spend with his wife and son. He was working on his future, and nothing could stop him.
Over the phone, his mother told him, “Mr. Belser died last night The funeral(葬礼）is Wednesday.” Memories flashed through his mind like an old newsreel(新闻短片）as he sat quietly remembering his childhood days.
“Jack, did you hear me?”
“Oh, sorry, Mom. Yes, I heard you. It’s been so long since I thought of him. I’m sorry, but I honestly thought he died years ago,” Jack said.
“Well, he didn’t forget you. Every time I saw him he’d ask how you were doing. He’d reminisce(回忆）about the many days you spent over ‘his side of the fence’ as he put it,” Mom told him.
“I loved that old house he lived in,” Jack said.
“You know, Jack, after your father died, Mr. Belser stepped in to make sure you had a man’s influence in your life," she said.
“He’s the one who taught me carpentry. I wouldn’t be in this business if it weren’t for him. He spent a lot of time teaching me things that he thought were important Mom, I’ll be there for the funeral.” Jack said.
Busy as he was, he kept his word. Jack caught the next flight to his hometown. Mr. Belser’s funeral was small and uneventful. He had no children of his own, and most of his relatives had passed away.
The night before he had to return home. Jack and his Mom stopped by to see the old house next door one more time, which was exactly as he remembered. Every step held memories. Every picture, every piece of furniture... Jack stopped suddenly.
“What’s wrong, Jack?” his Mom asked.
“The box is gone,” he said.
“What box?” Mom asked.
“There was a small gold box that he kept locked on top of his desk. I must have asked him a thousand times what was inside. All he’d ever tell me was ‘the thing I value most’,” Jack said.
It was gone. Everything about the house was exactly how Jack remembered it, except for the box. He figured someone from the Belser family had taken it.
“Now I’ll never know what was so valuable to him,” Jack said sadly.
注意：
1.所续写短文的词数应为150左右；
2.应使用5个以上短文中标有下划线的关键词语；
3.续写部分分为两段，每段的开头语己为你写好；
4.续写完成后，请用下划线标出你所使用的关键词语。
Paragraph 1:
Returning to his office the next day, he found a package on his desk.
Paragraph 2:
Inside he found these words carved:
假定你是高三学生李华，暑假参加了在墨尔本的姐妹学校Yerra Valley Grammar的游学活动。回国后给host family的小伙伴Barry写一封感谢信，要点如下：
1. 感谢他们一家的照顾；
2. 分享游学的体会；
3. 询问寄给他们的礼物是否收到；
4. 邀请他们一家来中国游玩。
注意：
1. 词数80左右；
2. 可适当增加细节，以使行文连贯。
Dear Barry,
Yours,
Li Hua
China used to be called the “Kingdom of Bicycles” in the 1980s and the 1990s, but since then, cars 1. (take) over the country. Because of traffic jams, 2. can be difficult to travel across major Chinese cities. Even 3. (go) a few kilometers can take up to an hour. Now, new apps that help people use bikes are being used more and more across cities.
Cheng Li started using bike share services about six 4. (month) ago. He said now he was using a car less and the metro (地铁)5.. “After I get off the metro, I usually have to walk another kilometer or two, so I’ll grab a bike share and go. It is convenient.”
For many, the best part about cycling is how easy it is to do. 6., many of its bike share stations were not placed in convenient places. Now, it is easy to find a bike, and to register with 7. smart phone.
Meanwhile, there is now a lot of competition among bike share providers because of their popularity. Some providers are trying to flood the streets 8. bikes to be more visible. Sometimes there are so many bikes 9. they completely block the sidewalks.
This has become a problem for city governments. It is not uncommon for bike users to leave bikes in the middle of the street or on the sidewalk. This blocks cars and people in already 10. (crowd) cities.
A woman interviewed by the media said, “Bike sharing is really convenient, but we need taking care of the problem of illegally parked bikes.”
