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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
admin
2022-12-18
50
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.
【C2】
选项
答案
F
解析
形容词辨析题。分析句子结构可知,空格前是连词and,空格后是名词ecosystems,因此,空格处应填入一个形容词或起形容词作用的名词作定语。空格前面的vital resources意为“重要资源,重要来源”。再结合连词and可知,此处说的也是山脉的重要作用,因此空格处应填入与vital含义相当的词,故essential为答案。
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0
专业英语四级
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