Jim is an English boy. He is 13. He is in No. 3 Middle School. He is in Class 4, Grade 7. Jim likes playing basketball. His friend, Kate, is an American girl. She is 13, too. Kate and Jim are in the same grade, but in different classes. Jim's favorite subject is math, and Mr. Zhu is his math teacher. Kate's favorite subject is Chinese, because her Chinese teacher Miss Liao is beautiful and kind to her. They both like China and the Chinese food.

阅读上面的材料，然后根据材料内容回答问题。

    My name is Sam. I am a junior high school student. My school is close to my home, so I always go to school on foot. Classes start at 8 a.m., and I am seldom late. I like Geography best. I enjoy learning about different places in the world.

    In the morning, we usually study Chinese, Maths and English. We have our morning break at 9:50 a.m..  When the bell rings, I run to the playground with my best friends Tom and Jack. We often play games. Break ends at 10:10 a.m..

Lunch is from 11:50 a.m. to 12:30 p.m.. Afternoon classes end at 3:30 p.m. Then Tom, Jack and I take part in the school bank practice. We make great music together.

    I always have a good time at school.

    Mr Smith works in a big city. Mrs Smith lives in a small town（镇）。Bill 是他们的儿子。 He is with his mother.

    It's a Monday morning.Mrs Smith writes a litter（信） to Mr Smith.She says to Bill,"Go to the post office(邮局)with the letter and your father can get it on Friday. "Then Bill comes back  late(回来晚).

    "Why do you come back late?"

    "There is a new post office in South Street（南街）.Do you know that?"

    "Of course. It's far from our home. Why?"

    "The letter is in the post office. "

    "But there is a post office near our home. "

    "I know,but the post office in South Street is near Dad.  He can get the letter earlier(更早地). "

    Do you often think of life in the future? Will we study at home? Will we fly to the moon easily? Everyone may have his or her views about that. Life in the future will be very different from life today. Between then and now many changes will take place but what wig the changes be?

    There will be changes in our food. Maybe no one will eat meat. Instead, people will eat more and more fruit and vegetables. People will stay away from junk food. People will be much healthier.

    Computers will be smaller and much more useful. Maybe we will even put the computer into our pockets. There will be at least two computers in every family. And computer studies will be one of the most important subjects at school.

    Work in the future will be different, too. Dangerous and hard work can be done by robots. People will work fewer hours that they do now. And they will have more free time for spots, watching TV and traveling.

    Great white sharks 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 a better temperature. 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. 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 and water during the journey. For example, each Mali elephant needs over 200 liters 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 that 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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    When the Titanic was built, she was the largest ship in the world. It had taken 50,000 men two years to build her. She was 269 metres long and as high as an eleven storey building. She was huge! In fact, the word "titanic" is often used to describe something which is "very powerful, strong, important or large".

    It was built because of increased tourists travel between North America and Europe. The Titanic was like a floating palace. Everything about her was beautiful and comfortable. She was also impossible to sink or that's what everyone thought.

    The Titanic left Southampton on the south coast of England for New York on 10 April, 1912. She stopped first in France and then in Ireland before setting off across the Atlantic Ocean. There were 1,632 passengers on board; 907 crew members(船员) looked after them.

    Four days after leaving Southampton, the Titanic's captain received not one but four icebergs(冰山) warnings.

    Icebergs are very dangerous for ships- only 10% of an iceberg can be seen above the water. But the water was clear and the captain decided to continue without reducing the ship's speed. At 11:40 p.m. the ship hit an iceberg, which cut a hole about 100 metres long underwater. The passengers were not told, but the Titanic could not survive this terrible damage.

    It was dark and freezing cold. The ship was filled with water. There was no time to waste. Women and children were told to climb into the ship's lifeboats. But there were not enough lifeboats for all the passengers. Finally, at 2:20 a.m. the Titanic sank to the bottom of the sea. 916 passengers and 673 crew members died in the icy water.