Everyone knows water is important to all living things. But do you know these interesting 1about water?

    Without water, the Earth would look 2the Moon. People can live for a long time without food, but only 3 days without water. Scientists say about 70% of the human body is made up of water. Water4 up about 83% of our blood, 75% of our brain, and 80% of our lungs(肺）. About 95% of a tomato is water, and about 80% of an apple is water. So 5can we do to help with water problems?

    Keep a shower to 10 minutes or6 time. It helps save much water. Use a broom to sweep the floor, the stair, the garage(车库），or the sidewalk instead of water.

    7throw your used water away. Instead, you can use some to water plants or run the toilets. Use a bucket(桶）of water to 8 your bike or the family car instead of water pipes.

    Use water only9you need it. Don't leave water running. Be sure to turn the tap 10when you are not using it.

    In the years, I will be 24 years old. Our city will be a1living place then. There will be many tall buildings and trees. Many people will visit our2. Almost every family will have one or two solar(太阳能的)cars.

    People will3their cars to work every day. The libraries will have more computers, and people can 4books on them. The restaurants will have robot waiters to bring you 5. Schools will have more teachers from England to6you English. With the7of new transportation(交通方式), travel will be fast. You can only need two8to get to Africa! Machines and robots will do heavy and difficult jobs9we will have more time. What do you think? Do you think this idea about life10will come true?

    Tigers are strong and dangerous. But now, the big animal is calling for our1.

    There were once eight kinds of2in the world, 3three died out during last century. In the last 70 years, the number of Siberian tigers(东北虎) has gone from as many as 300 to somewhere 418 and 22.

    WWF started a programme recently(最近) to put an end(停止) to tiger poaching(非法狩猎) and 5wild tigers. China, together with 12 other countries, has joined in.

    The Siberian tiger is already6of the world's most endangered(濒危的) animals. If the government doesn't take any action, it's quite7that there will be no more Siberian tigers in China in 10 to 20 years. Animals such as deer, sheep and wild boars(野猪) are the tigers' main food. There isn't enough8for wild tigers because of the hunting of these animals. So the 9 thing people can do is save the animals which tigers eat." To protect the tigers, we need to call on more people to 10 eating and hunting wild animals."

    Hi, friends!1 me! I2Africa. And now I live in a zoo in the south of China. People always3 that animals are their friends, but they don't treat (对待) us as true friends.

    Every day, many people come here to4me. It seems (看起来) that I can make them very happy. But I don't like to live here,5I don't have many friends. And people think sometimes I am dangerous, so I have to be in the same6all day. It's boring for me. And in my hometown (家乡), people7many of my friends for their ivory. They are in great8. I don't want to live here. I want to go back to nature (大自然) and9 a happy life. Do you know who I am? I'm a(n)10.

    Please come and save us.

    Many people like to watch TV. Watching TV is one of the most important activities of the day. TV1the outside world closer to people's homes. Some people say the world is smaller than before because of TV.

    What' s going2in other countries? How do people live in faraway places? Is there a good sports game somewhere? What's life like in the deepest part of the3? If you want to4these and other questions, just turn on the TV and watch it. Of course, people can also learn through reading or listening to the radio. But TV can help them learn better and more easily, because they can hear and watch, too. TV can give5new ideas. It's a wonderful thing.