Do you go to school by bus? It is very important for you to know how to be safe when taking a bus, no matter whether you like it or not.

    First, don't run to the bus stop, but walk. While you are at the bus stop, you should wait in a safe place. Do not run or play while waiting. And never get into a car with a stranger.

    Second, don't talk in a loud voice when you are on the bus, so the driver will not be disturbed(打扰). If you need to talk with the bus driver, you'd better wait until the bus stop. Never throw things on the bus or out of the windows. Never play near the emergency exit(紧急出口). When there is a fire, the most important thing is to break the window with a hammer(锤子) or any sharp（锋利的） things and then jump out.

    Third, when you are getting off the bus, make sure you walk (not run) three more steps away from the door. This is the best place to be around a bus. Stay away from the bus wheels and watch out for moving cars!

    Last, if you leave something on the bus, never return to the bus to get it. The driver may not see you come back and he may begin moving the bus. Also, if you drop something near the bus, tell the driver before you try to pick it up, so he will know where you are.

    Every year, wildfires(野火) destroy much forest land. homes are broken down, and thousands of people die. smokejumpers are stop helping to stop this.

    Smokejumpers are a special kind of firefight. they jump from planes into areas that difficult to reach by car or on foot. they race to put out fires as fast as they can.

    At a fire site, Smokejumpers first examine the land and decide how to fight the fire. their main goal is to stop fire from spreading. using basic tools such as shovels and axes, smokejumpers clear land of burnable material like plants and other dry material. they carry water with them too, but not much.

    Although most smokejumpers are men, more women are joining. Most important are your weight and height. Smokejumpers in the U.S. for example ,must be 54 to 91 kilograms, so they don't get hurt when they land, or get blown by strong winds.

    Smokejumpers must be able to live in the wilderness. in Russia ,many smokejumpers know how to find food in the forest and even make simple furniture from trees.

    They work is dangerous, the hours are long. But for these firefighters, smokejumpers isn't just a job. They love being able to jump out of planes, fight fires, and live in the forest. As 28-year-old Russian smokejumpers Alexi Tishin says,“This is the best job for the strong and brave.”

    My name is Jack. I'm 25 years old. I think I can help you for your Beidaihe School Trip. I like sports. I can play basketball, soccer and tennis. And I like music, too. I can sing and dance and play the drums. And I can also work on the computer. I believe (相信) I can help kids with these things. I like kids and want to be their friends. I'm a funny man. I'm sure children like me. Please offer (提供) me this job.

Have you ever counted the number of digits (数字) in your mobile phone number? Your number has 11 digits. You may sometimes find it hard to remember your number. That's because China has the longest mobile phone numbers in the world. Why is that?

    The 11 digits can be divided into three parts. Each part has a different meaning. The first three numbers tell you which mobile phone service company it is. For example, 135 is for China Mobile Communications Corporation and 188 is for China Unicom. The fourth to the seventh digits tell you where the number is registered (注册). And the last four digits are random (随机的).

    The main reason for using 11 digits is that we have the largest population in the world. We once had 10 numbers. But as our population grew, there were not enough numbers for us to use. So we began to use 11 digits starting from 1999. Eleven digits can be used to make tens of billions of mobile phone numbers. That's enough for each person to have seven or eight phone numbers to use in China.

    And mobile phone numbers can be recycled. Usually, the service company will reuse a canceled number after three to six months. If you call a number that you haven't contacted for a long time, you may find that its owner has changed.

    Besides China, Britain and Japan also use 11-digit mobile phone numbers. But their numbers always start with 0. So they cannot create as many numbers as we can. Countries like the United States, Australia and India use phone numbers with 10 digits. Canada's mobile phone numbers are perhaps the shortest in the world: they use seven digits.

Canadian: In my country, the mobile phone numbers use seven digits. Why does this mobile phone have 11 digits—13958583739?

Salesman: We have the largest population. Besides China, {#blank#}1{#/blank#} also use 11-digit numbers.

Canadian: What do the numbers mean?

Salesman: The number {#blank#}2{#/blank#} tells you which mobile phone service company it is.

    The {#blank#}3{#/blank#} to the seventh numbers tell you the {#blank#}4{#/blank#} of its registration. The number 3739 is random.

Canadian: Can you {#blank#}5{#/blank#} the phone numbers?

Salesman: Yes, after three to six months.