A. B. C. D. E.

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    Great white sharks (鲨鱼) in the Pacific Ocean. Wildebeest (角马) in Africa. Arctic terns (北极燕鸥) in the Atlantic. At first, these animals seem quite different. One swims, one walks, and the other flies. But they all have one thing in common. They all migrate (迁徙).

    Some migrating animals move to a place with better temperatures. Some go to find food or water. The groups travel as one, but during the trip, they face many different challenges.

    One challenge is distance (距离). Some migrating animals take very long trips. For example, one great white shark swam from Australia to South Africa and back. In nine months, it swam about 20, 000 kilometers!

    Another challenge is finding enough food or water during the journey. For example, each Mali elephant needs over 200 liters (升) of water each day. To get this, they need to go from one waterhole to another.

    Besides, migrating animals have to keep away from other animals because they want to eat them. The zebra (斑马) has to avoid lions. Traveling as a group helps keep them safe. When one zebra is in trouble, the other members make a circle around it.

    By working as a group, migrating animals travel to live better lives.

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    Flying a hot air balloon is full of challenge. Do you want to fly it? If so, here is some advice for you.

    Understanding the basics

    Take a training course and get a license.

    Know how the balloon can fly. Add propane(丙烷)to the fire to make the balloon fly.

    Make sure you have enough energy in the tank(箱).Check your tank at times.

    Learn how to stay at a right height. Raise or lower to control directions by the wind. If you want to lower, you can pull a red rope to let the hot air out of the top of the balloon.

    Making preparations

    You must have the necessary equipment(设备)such as a fire distinguisher(灭火器), a map and so on.

    You should check the wind conditions to make sure it's safe to fly. You must know when to fly or cancel the flight.

    You need several friends to help you control the balloon. They can help you pull down the basket or tie the balloon to the ground car until you are ready to fly.

    Flying the balloon

    Write down the height and the route(路线)through the whole flight. Before you land，pay attention to the high mountains, trees，tall buildings and so on. They may be dangerous.

    You are never too careful. Keep calm when you have trouble.

    Johnny Smith was a high school student who was good at Maths. He loved his computer. He came home early every day, and then he worked with it till midnight. But Johnny was poor at English indeed. He usually got "F" in his English. One day after school, Johnny joined his computer to the computer in his school office. The school office computer had the grades of all the students; the Maths grades, the science grades, the grades in arts and music and the grades in English. He found his English grade was an "F" again! Johnny changed it from "F" to "A". The next day, Johnny's parents looked at his school report card. They were very happy. "An 'A' in English!" said his father. "You are a very clever boy, Johnny." However, they didn't even know that Johnny was a hacker.

    Hackers know how to take information from other computers and put in false information by using a mode. They join their computers to others' secretly. School headmasters and teachers are worried about hackers, so are the police, for some people even take money from bank computer accounts and put it into their own ones. And they never need to leave home to do it! They are called hackers.

    Mr. Smith is a teacher. Yesterday he did a survey of what his students did on their last day off and this is what he learned.

    Linda went to see her grandparents. Her grandparents live in the countryside. They are very old. But they don't like to live in the city. They want to have a quiet life. Tom helped his parents do some housework. He cleaned the room, took out the trash, washed all the clothes. At noon, he helped his mother cook lunch. Mary look after her little brother because her mother was ill. Her father had to look after her mother in the hospital. Mike studied history at home. He isn't good at history. He thinks it is too difficult for him. His father helped him. Both his father and his mother hope that Mike can be good at all his subjects. They want him to study in a famous university one day.

    Tom is a cool boy. He is from America. {#blank#}1{#/blank#} His birthday is on November 21st. Every year he has a birthday party at home. {#blank#}2{#/blank#} They sing the song Happy Birthday to him. They often have a good time. Tom likes blue T-shirts and black trousers, {#blank#}3{#/blank#} His favorite subject at school is Chinese because it's interesting and useful. {#blank#}4{#/blank#} So he makes some pen pals(笔友)in China and often talks with them in Chinese. He likes tomatoes and milk. {#blank#}5{#/blank#} He is a healthy and nice boy.

A. Many friends come to his party.

B. But it is difficult for him

C. He is thirteen years old now.

D. For breakfast, he has them every day.

E. He thinks he looks cool in them