When 12-year-old Taylor Smith wrote a special letter to herself last spring, to be read in 10 years' time, she didn't know it would be opened before even a year had passed— and that it wouldn't be her eyes reading the words.

  “She had told me that she had written a letter to herself, and that she was excited that she was going to open it when she was older,”said Taylor's  mother, Mary Ellen Smith.

    Instead, it was opened by Taylor's parents after she died last spring. They posted the letter to Facebook, hoping it would inspire others.

    It has. “We've gotten letters from lots of parents who have said it has encouraged them to love their kids and love each other,” said Mary Ellen Smith.

    In the letter, Taylor congratulated herself on graduating from high school and asked, “Are you in college?”

    She also wanted to know if she had been on a plane yet and if the show “Doctor Who” was still on the air.

    Taylor also had some words for her future kids. After considering the idea of selling her iPad and getting an iPadmini instead, she told her future self to mention to her kids that “We're older than the tablet.” She included a drawing of an iPad for them to see.

    Taylor died suddenly of pneumonia (肺炎), leaving behind both her parents and an older brother.

  “I just want people to know just what an awesome, awesome person she was,” her father, Tim Smith said.

    Her mother said, “I can't bring her back, but I'm so grateful people have been inspired by her story.”

    Taylor's father read the closing g words of her letter, which said, “It's been years since I wrote this. Stuff has happened, good and bad. That's just how life works, and you have to go with it.”

    Read the following advertisement and answer the questions below according to the table.

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    Small midtown law firm. Excel skills, no legal exp req'd. 755-2040

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    Fast-moving ad agency needs bright, energetic, good typist for various responsibilities. 684-2500

    （P/T.=part time; Steno=stenographer速记员；exp=experienced；req'd=required）

    Tom Costello was once afraid of homeless Americans. “I was so afraid that if I saw a homeless person walking down the street, I'd cross the street,” he said.

    That changed seven years ago after his wife, Nancy, a volunteer at a homeless shelter, persuaded him to help with a holiday dinner for shelter residents. Tom remembered going to a store and buying socks for the residents. He knew many of them were in need of clothing.

    At the shelter, Tom said, he dropped a pair of socks into a bag for a woman. She asked him if she could have socks for a friend who wasn't with her that day. He gave her another pair. “She started to cry and told me that nobody had ever given her socks before,” Tom said, “Then she reached out and gave me a hug.” That experience at the shelter helped Tom end his fear of the homeless.

    It also led him to set up a group called “The Joy of Sox.”, which borrows from a name of a popular book. The group collects socks from donors and gives them mostly to shelters in the area where Tom and Nancy live. It has been expanding its reach and provides socks to homeless shelters in 21 states and other three countries now.

    Why socks? Tom explains that some Americans give food, coats and other clothing to shelters. But donating socks is not something most people think about. And, he said, socks are very helpful at keeping people warm, especially in cold weather. A man named Kiwi，who has lived in homeless shelters, said most of the time he could find enough food through shelters and soup kitchens. But socks were much more difficult to get, he noted.

    How would you like an easy way to earn $2,500? All you have to do is to sit around and wait for your meals. There's a catch, however. You have to stay in a chicken cage with a stranger for a whole week. There are no books or television or radio for a whole week. There are no books or television or radio for amusement. You can't leave until the week is up. And a camera will be recording your every move.

    Two people actually took the job. The idea came from Rob Thompson, a video artist. He wanted to make a film about the way animals are treated. His goal was to raise people's awareness of the living conditions of animals that are raised for food. He decided to pay $5,000 out of his own savings to two people who were willing to live like chickens for a week.

    To Rob's surprise, quite a few people answered his advertisement. He had interviews and selected Eric, a 24-year-old restaurant worker, and Pam, a 27-year-old chemist. The plan was for them to spend seven days together in a chicken cage that was six feet long and three feet wide. A camera would record their experience, which would take place in an art museum.

    The week was long and difficult. They slept on a hard wooden floor. They couldn't stand up without banging their heads. They ate mash(a kind of food for animals) and drink water from a garden hose-pipe(软管). Their only privacy was a toilet surrounded by a curtain. There were no sinks, mirrors, or toothbrushes in the cage. Their only inspiration was the two framed checks that hung on the wall outside the cage. Visitors who came here were warned, “Do not feed the humans.”

    Finally it was over, and Pam and Eric came out of the cage. They had survived the week, and they each had a $2,500 check in their hands. When Rob Thompson opened the cage, Eric came out, changed into clean clothes, and ate a chocolate bar right away. “It's great for me to be able to stand up.” he said. Pam just changed her clothes and left. After a week of visitors and reporters watching her, she didn't want to talk to anyone.

    Stephen Hawking is one of the most famous scientists in this century. He was born in 1942. He's world well-known on space and time. Stephen was searching some very big questions, such as "How did the universe begin? How will it end?"

    Stephen was a student at Oxford University. He studied math and science. Then, at the age of twenty, he became sick. He was so young, but the doctors said to his family, "He has only two more years to live." As a matter of fact, the doctors were wrong – he didn't die. He can't walk but he uses a wheelchair. He can't feed himself and get in or out of bed himself. But he refused to give in to the condition. He talks with the help of a computer. After Oxford, Stephen went to Cambridge University. Three years later, in 1965, he became a doctor of philosophy(哲学).

    Because of his serious health problems, it was difficult for him to draw or to write. So he started to think in pictures. With this new way of thinking, he became one of the most famous scientists in the world. In 1981, he met the Pope(教皇) in Rome. They talked about his ideas. Then in 1988, he wrote his first important book, A Brief History of Time. It sold more than 5.5 million copies in 33 different languages. He was once invited to China, he impressed us with his self-confidence, humorous and witty(风趣的) conversation.(谈话)

You've probably heard it a dozen times by now. But here it goes again: Sleep is important. Your mental health and immune (免疫时)system are connected to your sleeping habits. So are your grades, a new study finds. Sleep accounts for nearly one-fourth of the difference among students' grades in a class. So even if you spend hours studying for a test but get too little sleep, you might still do poorly.

Typically, people's sleep schedules are messy and can not be known in advance. Professor Jeffrey Grossman of Massachusetts Institute of Technology in Cambridge wanted to see if sleep links to people's learning performance even when a study was done with people who kept such true-to-life schedules at home. So he turned to Fitbits, which can check how long people sleep and how frequently they wake up. And the researchers looked for 100 students. They focused on these students' sleep patterns in the days and weeks before exams and then compared them to these students' test scores.

"How much time a person sleeps the night. before an exam doesn't affect that person's grade," Grossman says. "A student who sleeps 7 hours every night will do better than a student who sleeps 7.5 hours one night and 6.5 hours another night."

"It's important for people to know that if their Fitbits tell them that they have terrible sleep, that may not actually be so," Michael Scullin, a sleep scientist at Baylor University says. Grossman also raises this point. Fitbit, Inc. makes this advanced tool. But it doesn't share how its tool works. This leaves a question about whether the tool is really correct when checking a student's sleep. Even so, Scullin emphasizes that there are enough data supporting ties between sleep and how well someone performs.

"Students need more sleep and less late evening use of phones and other screens. Even with after-school activities and schoolwork, they need to get enough sleep," Grossman says.