Sleep is something we all do. But some people need to sleep more than others. Babies sleep most of the time. Children in school sleep about ten to twelve hours a night. Most adults sleep only seven or eight hours.{#blank#}1{#/blank#}All parts of our bodies have to rest after they work.. Our arms need a rest after we lift heavy thing, When we run fast, our legs work hard. They get tired. We have to rest them. Our brains workhard, too.{#blank#}2{#/blank#} We can sit quite still and rest our arms andlegs. But our brains aren't resting. They go right on thinking as long as weare awake.

      Our brains slow down a bit when we sleep and dream.{#blank#}3{#/blank#} Instead of thinking wide-awake thoughts, our brains make up dreams. Some dreams are very pleasing. Some are not. Most of thetime we forget them when we wake up.

      Scientists have tried to find out what would happen if people were not allowed to sleep. They asked some people not to go to bed. The people stayed up all night and all the next day. They stayed up the next night too,and the day after. They played games, but they made mistakes. They forgot things.{#blank#}4{#/blank#} The people grew rude and mean. They became angry with their friends. Finally they were too tired to stand up. When they sat down, they fell asleep.

Scientists have found that if people are not allowed to sleep and to dream, they act in an unusual way.{#blank#}5{#/blank#}But we do know that we need it to stay well. So tonight have a goodsleep. Lie down under the covers. Shut your eyes. Let your thoughts wander.Soon you'll stop thinking. You'll be asleep.

A. It was hard for their tired brains to work.

B. When we are awake, they help us pay attention to the worldaround us

C. But babies, children, and adults—all of us need to haveour sleep

D. Good sleep helps to improve one's memory

E. No one knows why sleep is so good for us

F. But even as we sleep our brains are doing some work

G. Of course you will have a good sleep

    Bike Share Toronto is the city's official bike share program, designed to give locals and visitors a fun, affordable and convenient alternative to walking, taxis, buses and the subway. There are 200 Bike Share Toronto stations and 2,000 bikes across the city, making Bike Share the most accessible way to get around and explore.

    How it works

    Become an Annual Member or buy a day Pass to access the system.

    Find an available bike nearby, and get a ride code or use your member key to unlock it.

    Take as many short rides as you want while your pass or membership is active.

    Return your bike to any station, and wait for the green light on the dock(停靠点)to make sure it's locked.

    Choose a plan

    For visitors

    Day Pass: $7. Unlimited 30-minute rides in a 24-hour period.

    3-Day Pass: $15. Unlimited 30-minute rides in a 72-hour period.

    For locals

    Monthly Pass: $25. Unlimited 30-minute rides for a month.

    Annual Membership: $90. Unlimited 30-minute rides for a whole year. The Annual Membership is the best deal for locals of Toronto and other frequent riders.

    The first 30 minutes of each ride is included with the membership or pass price. Avoid extra fees by dropping off your bike every 30 minutes at any other station. If you keep a bike out for longer than 30 minutes at a time, you will be charged an extra $1.50 for the first 30 minutes over, $4 for the next 30 minutes, and $7 for each additional 30 minutes after that.

    Contact us
    ●Customer Service: (855)898-2388
    ●Repair Service: (855)-2378
    ●Corporation Partners: (855)898-2398
    ●Employment Opportunities: (855)898-2498

    Summer's here and it won't be long before school-aged kids across America start complaining that they're tired of riding their bikes, playing at the park, swimming in the pool...and all the other awesome activities their parents hoped would keep them pleasant for the next 10 weeks. Well, if it's any comfort, such rapid boredom could suggest that the kids have amazing powers of memory. A new study shows that the better your short-term memory is, the faster you fed sated (过饱的）and decide you've had enough.

    "Though satiation can be physical, like when you feel full after eating too much, we were interested in the psychological (心理学的）side of satiation. Like when you're just tired of something," Noelle Nelson, assistant professor of marketing and consumer behavior. She and her colleague Joseph Redden at the University of Minnesota tried to think outside the lunch box." Something that was interesting to me is that some people get tired of same things at very different speeds. So if you think about pop songs on the radio, some people must still be enjoying them and requesting them even after hearing them a lot. But a lot of other people are really sick of those same songs."

    The difference, the researchers thought, might have to do with memories of past experiences. For example, studies show that people push away from the dinner table sooner when they're asked to describe in detail what they ate earlier for lunch.

    So the researchers tested the memory capacity (能力） of college students, The students then viewed a repeating series of three classic paintings…like The Starry Night, American Gothic, and The Scream...or listened and re-listened to a series of three pop songs...or three pieces of classical music. Throughout the test, the students were asked to rate （定等级） their experience from zero to tan. And the better a participant scored in the memory test, the faster they got bored." We found that people with larger capacities remembered more about the music or art, which led to them getting tired of the music or art more quickly. So remembering more details actually made the students feel like they'd experienced the music or art more often."

    The findings suggest that marketers could control our desire for their products by figuring out ways to keep us from fully remembering our experiences. We could also trick ourselves into eating less junk food by putting ourselves in the memory of a previous (之前的) snack. As for kids easily bored, just tell them to forget about it—it might help them have more fun.

    In modern society there is a great deal of argument about competition. Some value it highly, believing that it is responsible for social progress and prosperity(繁荣). Others say that competition is bad; that it sets one person against another; that it leads to unfriendly relationship between people.

    I have taught many children who held the belief that their self-worth relied on how well they performed at tennis and other skills. For them, playing well and winning are often life-and-death affairs. In their single-minded pursuit of success, the development of many other human qualities is sadly forgotten.

    However, while some seem to be lost in the desire to succeed, others take an opposite attitude. In a culture which values only the winner and pays no attention to the ordinary players, they strongly blame competition. Among the most vocal are youngsters who have suffered under competitive pressures from their parents or society. Teaching these young people, I often observe in them a desire to fail. They seem to seek failure by not trying to win or achieve success. By not trying, they always have an excuse: "I may have lost, but it doesn't matter because I really didn't try."What is not usually admitted by themselves is the belief that if they had really tried and lost, that would mean a lot. Such a loss would be a measure of their worth. Clearly, this belief is the same as that of the true competitors who try to prove themselves. Both are based on the mistaken belief that one's self-respect relies on how well one performs in comparison with others. Both are afraid of not being valued. Only as this basic and often troublesome fear begins to dissolve(缓解)can we discover a new meaning in competition.

Journalists are the major group of people who make their living from writing. Many young people who see themselves as future novelists choose journalism as a way of earning a living while developing their writing skills. Although writing for newspapers and writing for books require different qualities, the aspiration (志向) to be a great writer is not one to be discouraged in a would-be journalist.

Most people want their work to be recognized by others. This helps to give it value. Some people also want themselves to be recognized, so that they have status (地位) in the eyes of society. It is not a bad motive to wish to be famous, but this must never become your main reason for being a journalist. You will not be a good journalist if you care more for impressing your audience than for serving their needs.

Knowing the power of the printed or spoken word or image, some people enter journalism for the power it will give them to influence people. There is a strong belief that journalists control the mass media but the best journalists recognize their role as servants of the people. There is a difference between the desire to influence events for your own sake, and the desire to do it for other people. You should never use journalism for selfish ends, but you can use it to improve the life of other people.

Curiosity is a natural part of most people's characters and an important ingredient for any journalist. Lots of young men and women enter the profession with the desire to know more about the world without needing to specialize in limited fields of study. Most journalists tend to know a little bit about a lot of things, rather than a lot about one subject. Knowledge has many uses. It can simply help to make you a fuller and more interesting person. It can also give you power over people, especially people who do not have that particular knowledge. Always bear in mind that power can be used in a positive way to improve people's lives.

On a daily basis, the digital expanse witnesses an exchange of over two billion pictorial representations. Although imagery offers an entertaining and articulate avenue for online interaction, the process of digesting and generating such content presents formidable obstacles for individuals who are devoid of sight or are enduring profound visual impairments. Given the reality that there are more than 39 million individuals who are sightless, and an excess of 246 million who are grappling with severe visual limitations, a significant cohort may perceive themselves as alienated from the discourse that revolves around photographic content on the Internet. Scholars hailing from Harvard University are endeavoring to construct technological solutions that would enable the visually impaired populace to partake in the appreciation of photographic imagery with the same zest as their sighted counterparts.

The advent of automated descriptive text represents a groundbreaking innovation that engenders a narrative depiction of a photograph by leveraging the latest advancements in the field of object recognition technology. Individuals who rely on auditory output devices on their digital gadgets will now be presented with an enumeration of elements that a photograph might encapsulate as they navigate through online images. Previously, those utilizing auditory output devices were limited to hearing solely the nomenclature of the individual who disseminated the photograph, succeeded by the designation "photo" upon encountering a pictorial piece. However, the introduction of automated descriptive text now allows for a more elaborate portrayal of the contents of a photograph. For example, an individual might now perceive an auditory description such as "a visual scene comprising three individuals, exhibiting expressions of joy, in an outdoor setting."

This capability is made possible through the object recognition technology developed by Harvard University, which is predicated on a computational framework that encompasses billions of variables and has been refined through exposure to millions of exemplars. Each stride in object recognition technology signifies the potential for researchers to render technological interfaces increasingly inclusive and accessible to a broader demographic. When individuals are interlinked, they are positioned to accomplish remarkable feats, both in isolation and as a collective entity, and such interconnection benefits all participants within the network.

The rollout of the automated descriptive text is initially targeting auditory output devices on mobile communication devices configured to English, with plans to extend this functionality to additional linguistic variants and technological platforms in the near term. Although this technology is still in its infancy, harnessing its current competencies to articulate the essence of photographs marks a pivotal advancement in the quest to furnish our community with visual impediments with the identical advantages and gratifications that the broader population derives from photographic imagery.