The world is in danger. At one time there were 1,300 different plants, trees and flowers in Holland, but now only 860 remain(剩余). The others have been destroyed(破坏) by man. We are changing the earth, the air, the water and everything that grows and lives. We can't live without these things. If we continue doing like this, we will destroy ourselves.

    What will happen in the future? Perhaps it is more important to ask "What must we do now?" The people who will be living in the world of tomorrow are the young of today. A lot of them know that conservation(对自然环境的保护) is necessary. Many are helping to save our world. They plant trees and protect animals in forest. In a small town in the United States, a large group of volunteers cleaned the banks of their rivers. Young people may hear about conservation through a record called No One's Going to Change Our World. It was made by the Beatles, Cliff Richard and other singers. The money from it will help to protect wild animals.

Hi, I'm a middle school student. I'm Judy. In my class there are thirty-eight students. How do they go to school every day? Seventeen of them take the bus because they live far from the school. Six students walk. They think walking is good exercise. Fifteen students ride their bikes to school because they like riding bikes very much and their homes are not far from the school. No one goes to school by car. How do you go to school? Haha, I'm one of the fifteen.

No.9 Middle School has decided to hold a blood drive(献血活动), and you can help.

When I was in the third grade，I watched a video that showed the discovery of King Tutankhamen's tomb（陵墓）.I remember Carter，going through a narrow hole in the tomb with a candle.A workman asked what he could see."Wonderful things!"Carter said.From that moment，I knew what I wanted to do with my life.

So I decided what I wanted to be at the age of nine，and I made it happen.Seems easy，right？Not quite!The road wasn't easy!I did my studies—university（博士）.But along the way I was told many things，"Shawki was too young and she had no experience.She should get married and have kids".I also needed money（申请补助金）.The first five replies I got said no.Six months later the last reply came and I was excited about it.Finally，I could start my own digging.

Today，I'm lucky to work as an archaeologist（考古学家）.I study the lives of people who lived in Egypt's Nile Delta（埃及的尼罗河三角洲）

For anyone thinking about a job，I would say：Never give up.If you want to do something.keep trying.If people tell you"no"，use that—it will push you.At the beginning

Second，focus on your goals.You don't have to follow people.If they say something has never been done，make it happen.You may be the first to do it!There are always challenges

As the weather gets warmer，there are few things that are better to do than travel．But traveling might not be that fun for everyone，especially for those who have motion sickness（晕动症）．

Motion sickness is also called travel sickness．It is a common experience for many people．Depending on how you travel，it can be called carsickness or seasickness．People with motion sickness feel very uncomfortable while they are in motion．They feel sick and dizzy，like the room around them won't stop spinning．

It is generally believed that motion sickness happens when your senses become confused （困惑的）with each other，Scientific American reported．

We use different parts of our body to sense movement．Our eyes tell us if we are moving．The inner ears （内耳） contain a special liquid that helps us sense our direction and balance．Our muscles react to movement．

When you move around，these body parts work well together．But when you are in a car or an airplane，they get confused．Your inner ear signals that you're moving．This mismatch gives us motion sickness．

But some people are less sensitive to motion sickness．This may be because they have certain genes （基因） that prevent mismatching senses，Bethann Hromatka，told the Atlantic．

Although there are many ways to deal with motion sickness，scientists believe that the key is to simply try to adapt to it．For example，some astronauts do special exercises that give them mild motion sickness．After a week or two，the astronauts become used to it and don't feel uncomfortable anymore，a NASA flight doctor，told the BBC．

Dear Tony,

I go to a new school in Cambridge now. I like it very much. I'm making a lot of new friends. 

I'm studying new subjects, like science. It's very interesting. We're using computers and learning how to use the Internet. We write e-mails(电子邮件) to people in different countries. I'm learning how people live in different countries. It's great!

We do P. E. on Wednesday in the afternoon, Sometimes we stay in the sports hall to do sports and I like that too. I play basketball after school on Mondays. I like playing basketball a lot. I'm enjoying my new school!

Write and tell me what you're doing in your school in China!

John