“ Ask not what your country can do for you--ask what you can do for your country.” It's a famous quote from US president John F, Kennedy's inaugural(就职) speech in 1961.

    Mark Zuckerberg, the founder of the social networking site Facebook, must agree with Kennedy. The 33-year-old American donated $100 million to the public schools in New Jersey, US.

    Who is this young billionaire? How did he make his fortune?

    Thirteen years ago, Zuckerber was a computer geek(怪才) at Harvard University. As a second-year student, he set up a website to put the “face books” --photos of incoming first-year students online. The website, where people were able to share personal information, was a success at once.

    Zuckerberg first opened Facebook to high school students and then to everyone. Greeting such as “Have you checked your Facebook page today?” and “Do your ‘friends' know what you ate for breakfast?” became a part of American life. Now Facebook is the most popular site in the world with 1.7 billion users.” I could have never imagined all of the ways people would use Facebook when we were getting started thirteen years ago,” Zuckerberg wrote in a recent blog.

    Zuckerberg's dream is to make the Internet a more connected place. The mission(任务)could become profitable for Facebook. The more people share information about themselves online, the more money Facebook will make selting advertising. Zuckerberg is already worth $34 billion, according to Forbes.

    Yet the billionaire keeps his own life out of the public eye. At the company, it is said that he sits among a sea of desks like hundreds of workers. A visitor to Facebook might not even spot Zuckerberg in T-shirt and jeans. He usually takes one two-week vacation each year with his wife Priscilla Chan, a Chinese American. On the weekends, it is reported that he roasts pig and goat in his backyard for friends and takes Chinese lessons.

    The Social Network, a movie based on Zuckerberg's story, came out in 2010. It became one of the most popular films of that year.

    Terry Fox was only seventeen when he got a cancer (癌症). He must have felt hopeless when the doctor said his right leg would have to be cut off 6 inches above the knee.

    But to everyone's surprise, Terry Fox made up his mind to become a long-distance runner and do something about the cancer. What a dream!

    Although it seemed impossible, Terry decided to run across the whole country. He hoped to raise one million dollars for cancer research. Few believed he would make it. Anyway, on April 12, 1980, Terry Fox began his Marathon of Hope. For the first days of his marathon, Terry Fox was alone. He started running at 4:30 am. Day by day, people began to realize that something big was happening on the lonely road. As people saw Terry, they stopped and donated (捐赠) money for cancer research.

    However, his health took a rapid turn for the worse several months later. He had to give up his marathon on September 1, 1980. Terry died three months later, at the age of 22. In his short life, he raised $24 million for cancer research—one dollar for each person in his motherland.

    Since his death, the yearly Terry Fox Run, first held in 1981, has grown to be the world's largest one-day fundraiser (筹资活动) for cancer research.

    Mike is a factory worker. He is often very tired after a day's work. His wife(妻子), Jenny, has no job, so she stays at home to cook the meals. Every day he can have his dinner when he gets home from his factory.

    One day, Mike came home very late because he was very busy in the factory. He was very hungry when he got home.

    He was not happy when he found his dinner was not ready. He was very angry with his wife. He shouted out, "I'm going out to eat in a restaurant." "Wait for five minutes," said his wife. "Why? Do you think that dinner will be ready in five minutes?" asked Mike.

     "Of course not," she answered. "But I can be ready to go with you in five minutes."