2. 外语
  3. A. approaches B. components C. comprise D. consist E. dramatically F. essential G. guarantee H. impacts I. methods

A. approaches B. components C. comprise D. consist E. dramatically F. essential G. guarantee H. impacts I. methods

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问题     A. approaches  B. components  C. comprise  D. consist  E. dramatically
    F. essential   G. guarantee   H. impacts   I. methods  J. modest
    K. mountainous L. prominently M. promise   N. urgent   O. yield
    Mountains cover about a quarter of the world’s land surface. They are critical【C1】________of the Earth’s surface and provide vital resources and 【C2】________ecosystems to a significant proportion of the global population. As the water towers of the world,【C3】________regions are important water suppliers for nearly half of all people. In addition to water, mountains also【C4】________timber and non-timber forest products, mineral resources, and many other food, fiber, and fuel products. Moreover, mountain ecosystems provide carbon storage, nutrient retention, a provision of clean oxygen, a destination for tourism and recreation and pest control. Therefore, mountainous regions【C5】________ecosystem security, and are key natural resource bases for human development due to their ecological, social, and economic values.
    Mountains are widely distributed across the continents, from tropical to arctic latitudes, and are defined as landforms that rise【C6】________above their surroundings, generally exhibiting steep slopes, a relatively confined summit area, and considerable local relief. Whilst there are three different【C7】________to mapping mountainous areas of the world, each with its own history and applications, it is clear that mountains 【C8】________a significant proportion of global land area.
    Due to the combined【C9】________of both an increasing human population and climate change, there is an【C10】________need to sustain mountain systems in order to support human well-being.
【C7】
选项
答案A
解析 名词辨析胚。分析句子结构可知，空格前为there be结构，空格后是介词to。因此，空格处需要填入一个名词作thee be的宾语且该名词可以与介词to搭配使用。结合空格所在句句意和备选名词可知，空格处应该填入表示绘制世界山区地图的“方式，方法”的词。approach to doing sth. 意为“做某事的方法”，approaches符合题意，故为答案。
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