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高中二年级英语

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    A new study shows one of the largest glaciers(冰川) in Greenland is becoming smaller and speeding to
    the sea faster than scientists expected. If it continues, Greenland itself could become much smaller during
    this century and global seas could rise as much as 3 feet.
    The rates of change that we're noticing are much higher than expected. If these rates continue, it is not
    likely that Greenland could shrink by several tens of percent this century. However, it's not known how
    quickly this coastal response of the Greenland ice sheet melting will have an effect on the vast inland ice.
    Greenland is the world's largest island, covering area more than three times the size of Texas. Some 81
    percent of it is covered by ice, and there are many glaciers. Glaciers are like slow-moving rivers of ice.
    Where a glacier meets the sea, its weight keeps it firmly resting on the bottom. A glacier's front is the point
    where the water is deep enough that the glacier floats.
    Since the 1970s, the front of Helheim stayed in the same place. Then it began melting rapidly, moving
    back 4.5 miles from 2001 through this past summer. It has also grown thinner, from top to bottom, by
    more than 130 feet since 2001. And over these past years, its trip to the sea has sped up from about 70
    feet per day to nearly 110.
    The melting is driven by a warmer climate. Temperatures in Greenland have risen more than five
    degrees Fahrenheit(华氏温度) in the last ten years. Since most of Greenland's ice is on land, seas will rise
    as the ice melts. If all Greenland's ice sheet melted, oceans would be 15-20 feet higher. Nobody expects
    that to happen any time soon.
    1. What can we know about the glaciers according to the passage?
    A. Glaciers only lie in Greenland.
    B. Water in glaciers is more than sea water.
    C. Glaciers sometimes float on the water.
    D. Glaciers can increase the water level of lakes.
    2. According to the passage, we know that Greenland _____.
    A. belongs to Canada
    B. is the largest island in North America
    C. is all covered with glaciers
    D. is sinking under the sea level
    3. Which of the following may be the result of the disappearing of Greenland glaciers?
    A. The climate of the world will be warmer.
    B. The glaciers in other areas will be bigger.
    C. It will be easy for explorers to visit the island.
    D. Some coastal cities may be under the sea.
    本题信息:2010年陕西省期末题英语阅读理解难度较难 来源:刘平(高中英语)
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       健康环保类文章常是介绍科学知识、生活常识和环境保护方面的短文。阅读此类短文要以现象或事物为中心进行思考,理解现象产生的原因、条件和客观规律等。同时要抓住事物的特征、用途和相互关系等。科普环保类文章一般为说明文,从结构上看大致可分为三个部分:
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