Tony, a 14-­year-­old Chinese school boy, lives in Guangzhou with his parents. Tony is his English name. Tony began to love computer games three years ago.

    Every day, he spends most of his time playing computer games. Usually he plays until midnight in his room. But his parents don't know. And he never takes sports. What's more, he loves junk food very much. He eats it more than four times a day. Bad lifestyle makes him unhappy. He is tired in class. So he can't study well. And he is often ill. Yesterday he had a fever and cough, and he didn't go to school.

Information Card

    Life in the future will be very different from life today. What will the change(变化)be? There will be changes in our food. Maybe(或许)no one will eat meat every day. They will eat fruit and vegetables. Computers will be very small, and there will be at least(至少)one in every home. People will take the computers in their pockets. Work in the future will be different, too. Robots will do dangerous and hard work. People will have more free time to travel.

Information Card

I went to Grand Canyon (大峡谷) National Park in July 2012 for the firsttime and I knew I wanted to work there as a park ranger（管理员）. Park rangers protect the park's animals, plants, land, buildings, andpeople.

Now, as a park ranger forGrand Canyon National Park, I share the science, history and beauty of this parkwith thousands of visitors from around the world.

National parks are like outdoormuseums. Park rangers have all kinds of jobs, depending on where they work and whatthey studied during college. I teach school field trips（实地考察）, work at visitor centers and helppeople stay safe during their visit.

My favorite part of my jobis showing children their first look at the Grand Canyon during school field trips.Children are often amazed at the canyon's size and colors. Sometimes, they thinkit looks like a painting.

Being a park ranger requiresa lot of energy. I walk several miles and talk with hundreds of people each day.Park rangers must enjoy working with people and speaking in front of groups. Nearly5 million people visit Grand Canyon National Park every year.

Park rangers must also beprepared for any situation. Recently, I broke a traffic jam(堵塞). It was caused by a huge elk（麋鹿）standing in the road. Elks can become dangerous when they get scared,so I asked visitors to stop their cars and take pictures from far away. Believeit or not, I also help protect people from monkeys. It is not allowed to feed animalsin national parks. But sometimes, visitors try to feed monkeys.

    Good study habits are important for all students. When you have good study habits, you will learn faster and find you have a good memory.

    Do you usually study in the living room？This is not a good place for study because it's really too noisy. You need to study in a quiet place, such as your bedroom. A quiet place will help you learn better.

    Before you begin to study, do not forget to clean your desk. It helps you study well, too. Light is important, too. You will feel tired easily if there is not enough light.

    Of all the good study habits you can develop, asking questions is the key. Just ask. No one knows everything, but we can always learn from each other by asking questions.

    When do you work best？Are you an early bird, a night owl (猫头鹰), or something in between ?Find your most productive work time, and then plan to study at this time.