Mountain climbing is very popular in many parts of world. Oko Suki lives1Japan and every year he and his two friends climb Fujiyama, not too far2Tokyo. Fujiyama is 3mountain in Japan. It's more than 12，0004 above the sea level（海平面）. It's very5to climb mountains. It might be very 6 and windy. 7 might be snow slide （雪崩）and icy cliffs （冰崖）. Oko and his friends are always8 They always 9 warm clothes. Some day Oko would like 10 Mount Everest. You know it's much higher than Fujiyama.
When we feel the ground moves suddenly, it means that an earthquake may come. Many of the earthquakes first come under the sea and then happen anywhere on the earth. Especially they often happen near the mountains and seas such as Wenchuan, Japan and Indonesia.
When an earthquake happens, ifs very easy to cause a tsunami（海啸）. Houses fall down, many people are injured and even died.
Now scientists are trying their best to study earthquakes. They make maps to show the "earthquake belts （地震带） ". So the houses there must be quite strong.
We believe that scientists will be able to tell us when and where an earthquake will happen in the near future. Also, they can tell us what to do and how to do. People can even use earthquakes to do something for us humans.
People like to do an activity for fun when they have free time. People usually call this kind of activity hobby.
Hobbies can include（包含）fishing, reading, listening to music, watching movies, collecting stamps, playing basketball and so on. They are great fun and good for people. First, doing sports such as fishing and playing basketball can give the body good exercise, prevent people from disease, make the body strong and keep people healthy. Doing sports can build the team spirit （精神）. Second, reading, collecting stamps and watching movies can help people know more about the world. All the people know they can get everything through study. Through reading we can know what is happening and what happened in the world. By collecting stamps we can know about famous places and history in the world and in all the countries. If you like to watch movies from other countries, you can know a lot about the life in other countries.
I think everyone should have a good hobby. Not all the hobbies are good for people. Bad hobbies can be bad for people. If you have a good hobby, please share it with your friends. If you have a bad one ，please give it up at once.
Do you know what punk rock music is? I love it very much. Now let me tell you something about punk rock music. Punk rock music started in the late 1960s in the UK and ifs a way to express （表达）the singer's ideas about society （社会）.
The first punk rock bands （乐队）Ramon's and Black Flag came to the world in the early 1970s. Then more new punk rock bands came to the world such as the Sex Pistols, the Clash, the Damned and Iggy Pop.
Why did punk rock music go to so fast? Because people at that time needed some ways to express themselves. There are lots of punk rock bands nowadays, such as Distillers, the Cure, and Green Day. The first different point between the old and new bands is their clothes. The old punk rock bands did not really care about their clothes, but the new punk rock bands do care about their clothes when they are out for functions （典礼）.
Our lives have become more digital （数字化的）in the modem world. However, spending a lot of time working, reading, texting and gaming through digital devices （设备）is bad for our eyes.
According to the American Optometric Association （美国眼科协会），70 to 75 percent of computer workers have eye problems. People with digital eyestrain may get headaches, dry and red eyes, eye pain, watering and other problems.
"Children get cellphones at younger ages and are using them very often during the day, "Sarah Hinkley, spokeswoman for the American Optometric Association, told USA Today.
The good news is that there are many things you can do to lower digital eyestrain. Your hand should rest comfortably on the screen, as if you're high-fiving （击掌）the screen. Enlarge text size until your eyes feel comfortable. When you are using a mobile phone, keep it at least 30cm from your eyes and just below eye level. Try not to use it under sunlight.
Every 20 minutes, take a 20-second break and look at something 20 feet （ about 6 meters） away.
A. Studies show that younger children can't use cellphones.
B. We can study, find information and talk with friends on computers.
C. The best is taking breaks away from your computer.
D. These problems have started to rise among children.
E. When using a computer, first sit in your chair and reach out your arm.
F. Last but not least, remember to take a 20-20-20 break.
G. Digital eyestrain （眼睛疲劳）is one of the most common problems.
