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    Probably you have seen photos of the Grand Canyon（峡谷）, the great valley in the desert country of Arizona. But you must go there yourself to feel its true size and beauty. The Grand Canyon is one of the greatest natural wonders of the world
    The Colorado River formed the Grand Canyon over millions of years. Slowly, the river cut down through hard rock. At the same time, the land was rising. Today the canyon is 1.5 kilometers and 445 kilometers long. The oldest rocks at the bottom of the canyon are more than 1 billion years old. The width varies from about 200 meters to 29 kilometers across. The rim or top of the canyon is about 2,300 meters above sea level on the South Rim, and about 3,000 meters on the other side. As a result, there are different kinds of plants and animals on opposite sides of the canyon. The South Rim is dry desert country. The North Rim has tall forests.
    The canyon looks different at different times of day, and in different seasons and weather. At sunrise and sunset the red, gold, brown and orange colors of the rocks are especially clear and bright. In winter, the canyon is partly covered with snow.
    The view from the South Rim of the Grand Canyon is the best. Most visitors come here and stay in campgrounds or hotels. Every point along the canyon’s edge offers a different view.
    The North rim of the Canyon is quieter. It takes all day to drive there from the South Rim because there is only one bridge across the Colorado River. On the way, you go through Navado Indian lands, and a colorful pink desert called “The Painted Desert”.
    【小题1】The best way to feel the true beauty of the Grand Canyon is to________.

    A．see its photographsB．listen to the report about it
    C．watch its introduction on TVD．go there yourself and visit it
    【小题2】 The scene of the canyon is ________.
    A．various depending on different time and places
    B．almost the same
    C．various depending on different time
    D．various depending on different places
    【小题3】 If you want to visit the North Rim from the South Rim, you________.
    A．can go there in many directionB．won’t spend much time on the way
    C．can visit The Painted Desert on the wayD．needn’t go across any bridges
    【小题4】 If you want to have a visit to the Grand Canyon, you’d better go to _______.
    A．the North RimB．the South RimC．the bottomD．Navado Indian Lands

    【小题1】D【小题1】A【小题1】C【小题1】B 

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