There's much to see under the sea, but you need to remember that light behave differently in water than in air. The objects appear closer to you than they exactly are. You might find yourself reaching out to touch something and completely missing it.

    Objects under water will appear larger than they would on the surface, too. Be careful not to tell any stories about the big fish that got away. That fish might not be so big after all! It's just because sometimes things can seem to be as much as about 33 percent bigger in water!

    What's more, in deeper water, colors just don't seem as bright. In fact, it looks as if some colors are missing. Remember the color of an object results from the wavelength (波长) of light that are reflected (反射) from its surface. And light is taken in as it moves down through the water.

    Swimmers wear wet suits to keep warm underwater. Let's take a bright red, yellow, and blue wet suit as an example. These colors are hard to miss on the surface of water. Watch carefully the changes in color as you descend in the water. The red part now looks almost black because the red light wavelengths, the longest among these three colors, are missing. As you go down deeper, the same thing will happen to the yellow part and in the end to the blue part. Even at a place of about 6 to 9 meters underwater, you will look terrible, like a ghost(鬼怪) ! And you have to wait for your return to the surface to enjoy the bright colors again!

Lin Wenqian is a girl student. When she was on a busy bus last month, she felt someone touching her. She was so afraid.

Zhou Bin, 12, is a boy. He likes to chat on the Internet. But once a stranger said lots of dirty things to him.Zhou was so surprised!

What can students do when this kind of thing happens? Here is some advice from some teachers and students:

Don't be afraid. Ask him or her to stop at once. If he or she doesn't listen, try to turn to others around you and call for help.

Keep calm. Be serious and keep a cool face. Say you don't like it and show you are angry.

If there is no one around, use clever ways. If you only shout or fight to make them angry, it could make things worse! They may take your life. Find excuses (借口) to run away. Say things like you are waiting for your parents or you want to go to the washroom.

注意：

1.邮件必须包含以上表格中的所有信息，可适当发挥；

2.词数:80~100。

Children love spring for different reasons. Let's have a look.

Hi, Friends! I'm Peter from Hungary. 1 is my favourite season? Well, I like spring best 2 after the long cold and wet days, it is warm again. The weather changes quite a lot. It is cloudy sometimes but the sun shines 3 most of the time. When I go out, I 4 see lovely spring flowers everywhere.

Hi, I'm Li Hua from China. Spring is my favourite. It's the best time for family activities. And Spring Equinox(春分) is in this season. It was 5 March 20 last year and there was great fun in my house. I 6 the eggs in many colors with my family. 7 also tried to help the eggs stand on their ends. It was really funny!

The Big Stone River is one of the most amazing stone rivers in the world. 

The Big Stone River is the most interesting sight（景象）of Taganai Park in Russia. Different from other rivers, it is filled with rocks and stones. Not a drop of water can be seen. Interestingly, as one comes near to the rocky river, the sound of running water can be hear rocks fell down from the mountains slowly and made the river of rocks. 

The Big Stone River is about 6 km long and is made up of many small rocky rivers. It cuts through a thick forest like a real river. It is about 200 meters wide and in some places, it is up to 700 meters wide. Some of the rocks weigh up to 10 tons each and the layer（层）of rocks goes down 6 meters deep. 

Scientists believe it is the consequence of the movement of glaciers（冰川）about 10,000 years ago. At that time, ice covered the top of the mountains. As time went by, the ice turned into water. The Seeing the amazing river is a great experience. The best way to experience this natural wonder is from above. Come and visit it when you come to Russia. 

 Hainan Chicken Rice is a delícious rice. {#blank#}1{#/blank#} People in Hainan often eat it. It is one of the 50 best specials in the world.

 {#blank#}2{#/blank#} When cooking Hainan Chicken rice, some people cook rice with oil(油). Some people use Chinese green onions to make it hot(辣的). {#blank#}3{#/blank#}

 People in Hainan usually use White- cut Chicken for this dish. The chicken is soft(软的). {#blank#}4{#/blank#} They think this kind of Hainan Chicken Rice is the best.

 When eating Hainan Chicken Rice, you should drink a bowl of soup. {#blank#}5{#/blank#} They make the soup look beautiful and taste good.