Can dolphins talk ? They can't talk with words, but they talk with sounds. They show their feelings with sounds.

 Dolphinp travel in a group. We call a group of fish a“school". They don't study, but they travel together Dolphins are mammals, not fish, but they swim together in a school.

 Dolphins talk to the other dolphins in the school. They give information. They tell when they are happy or sad or afraid .They say "Welcome” when a dolphin comes back to the school. They talk when they play.

 They make a few sounds above water They make many more sounds under water. People cannot hear these sounds because the sounds are very, very high. Scientists make tapes of the sounds and study them.

 Sometimes people catch dolphins for a large aquarium. People can watch the dolplains in a show Dolphins don't like to be away from their school in an aquarium. They are sad.

 There are many stories about dolphins. They help people. Sometimes they save somebody's life. Dolphin meat is good, but people don't like to kill them. They say that dolphins bring good luck. Many people believe this.

    My sister Alli and I have been trying to get people to stop dropping cigarette butts (烟蒂) for seven years.

    One day, we were walking in our hometown and saw hundreds of cigarette butts on the ground.{#blank#}1{#/blank#}

    They made the town look so ugly that we decided to start a group to make people stop dropping butts. We called it "No Butts About It!"

    At first, we drew pictures with "The Earth Is Not Your Ashtray (烟灰缸) " written on them. We put the pictures around our hometown--in parks, by beaches, and along roads.

    We wanted to make people understand that dropping butts does harm to the environment. Most smokers don't think that dropping butts harms the earth.{#blank#}2{#/blank#}

    Later, we wrote to companies and asked them for money to help us. We used the money to buy ashtrays to give smokers.

    We wanted smokers to carry the ashtrays with them so they didn't have to drop butts.

    At the moment, we are trying to get cigarette companies to put an ashtray in each pack of cigarettes.{#blank#}3{#/blank#}Many people have started to join our group since it began.{#blank#}4{#/blank#}And there are even groups in England, Australia and India !

    Many newspapers have written about my sister and I over the last seven years. And we have won many prizes for our good work.

    {#blank#}5{#/blank#}We just want to make the earth a better and cleaner place for animals, plants and people.

    One day it will be.

A. My sister and I set up a "No Butts About It" group.

B. But we are not interested in prizes.

C. Today there are 45 other "No Butts About It" groups in America.

D. They made the ground dirty.

E. But it does! All rubbish does.

F. Many smokers like to drop butts here and there.

G. Some companies would like to do it.

    In China, learning some safety knowledge(知识) is becoming more and more important now. How should you keep yourself safe？

    {#blank#}1{#/blank#}

    At school：

    When students around you begin to push, try to hold onto something, or stay in a safer corner. {#blank#}2{#/blank#}

    On your way home or to school：

    Wait for the green traffic light. {#blank#}3{#/blank#} Wear clothes in bright colors, so the drivers can see you easily.

    {#blank#}4{#/blank#}：

    Stay calm and leave quickly. To keep clear of smoke (烟雾),use a piece of wet cloth to cover your mouth and nose.

    For riding on the escalator（自动扶梯）：

    {#blank#}5{#/blank#} You should hold onto handrails（扶手） and stand on the right side of the escalator, because right arms are stronger.

    It's very common for students' marks to fall. {#blank#}1{#/blank#} Sometimes it is only because the exams get harder.

    {#blank#}2{#/blank#} He or she will be able to help you with the subjects you find difficult. Stop comparing yourself with other people. It does not matter if other students get higher marks than you. {#blank#}3{#/blank#} Before each exam, you should go through you notes from class. You should remember the most important things you have written in a shorten form.

    {#blank#}4{#/blank#} You will be surprised when you find you remember so much. It may take hard work and your marks may not improve straight. {#blank#}5{#/blank#} Soon they should begin to climb again.

    Car Free Day encourages drivers to give up their cars for a day to protect the environment. People from around the world get together in the streets to remind the world that we don't have to; accept the society full of cars. It started from France in 1998. Because of the air and noise pollution, some French young people wanted a day without cars. On September 22nd, people in 35 cities in France didn't use their cars. They went to work or school by bike, bus or on foot. After that, September 22nd became Car Free Day. The first Car Free Day in China was in Chengdu in 2001. The slogan(口号) for the day is "If we, drive for one less day, we can have one more nice day."

    Organized activities are held in many cities on Car Free Day. In Brussels, Car Free Day shall be valid(有效的) for everybody except persons with a special permit(许可证),but they have to slow down to the speed of 30 kilometres per hour. The public transportations are encouraged. The streets are open only to walkers, bicycles and buses from 7:00 a.m. to 7:00 p.m. In Beijing, it asks drivers to leave their cars at home for one day each month and walk or ride a bike to work. More and more people are taking part in the activity. In the first quarter of this year, Beijing only had 52 blue sky days, and you may see haze almost every day! We must do more for Car Free Day as a Beijing driver said, "We may not change the weather, but we can choose not to drive."

    But we do not want just one day and then a return to "normal" life. We should go on with Car Free Day.