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.
【C6】
选项
答案L
解析 副词辨析题。分析句子结构可知，空格处所填词位于动词rise后面，且空格所在句句子结构完整。因此，空格处应填入一个副词修饰动词rise。结合空格所在句的句意以及常识可知，山脉就是明显高于地面的突起。因此prominently“显著地，明显地”符合句意，故为答案。
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