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　　Napoga is a 12-year-old girl in Ghana(加纳), Africa．It is hard for her family to get clean water．Every morning, she leaves home at half past five to get clean water for her family in a village far away．It takes her six hours to get enough clean water for daily(日常)cooking and drinking．She has no time to go to school or to play with her friends．Millions of people in the world are like Napoga．They can't get enough clean water to keep healthy．

　　Earth Day is April 22．But on all other days, we must also remember it．The water we use is the most important natural resource(自然资源)on the earth．

　　Water covers 70％of the earth's surface(表面)．But most of that is sea water．We can't use it for very many things．Fresh water covers only 1％ of the earth's surface．

　　You probably feel lucky that your life isn't as hard as Napoga's．But that doesn't mean you don't have to worry about water．We all face serious water problems．One of them is water pollution．All kinds of things from cars, factories, farms and homes make our rivers, lakes, and oceans dirty．Polluted water is very bad for people to drink．And dirty water is bad for fish, too．Now, 34％ of all kinds of fish are dying out．

　　How do cars and factories make our water dirty? First, they pollute the air．Then, when it rains, the rain water comes down and makes our drinking water dirty．Dirty rain, called acid rain(酸雨), is also bad for plant s, animals and buildings．

　　Scientists say that in 30 years, more than half of the people in the world won't have enough clean water．We have to learn how to save more water for ourselves and our children．Here is some advice for saving water：

　　●Turn off the water tap while you brush your teeth．You can save as much as 450 liters(升)each month．

　　●Leaky taps(漏水的龙头)waste a lot of water．Fix them right away!

　　●You can easily cut your 10-minute showers in half－and you'll be just as clean．

　　●When you wash dishes, don't let the water run．

　　●Only wash clothes when you have a lot to wash．If your washing machine isn't full, you're wasting water!

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阅读理解

　　When America was young, the city of Washington, D．C．had been built．It was built in a forest, near two beautiful rivers．Trees were cut down and the Great capitol(美国国会大夏)was built．A house was built．The President of the United States would live in this horses．It is now called the White House．

　　At that time there was a park near the President's house．And people let their horses and cows, sheep and pigs eat grass in the park．Today in that same park there are no horses or cows, sheep or pigs．It is a beautiful park for all people to see．

　　This is a city of many monuments(纪念碑)．The highest of all is the George Washington Monument．This monument helps all of us remember George Washington, the first President of the United States．Inside the monument is an elevator to the top．Inside the monument are many steps．People may climb these steps to the top．

　　When they get to the top, they see the United States Capitol building with its white dome(圆顶)and many monuments．They look over this beautiful city－Washington, D．C－the capital of the United States．

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