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外语
A. our share of resources B. a biological creature C. a given area D. the maintenance of the ecosystem E. the source of food F.
A. our share of resources B. a biological creature C. a given area D. the maintenance of the ecosystem E. the source of food F.
admin
2014-03-28
28
问题
A. our share of resources B. a biological creature
C. a given area D. the maintenance of the ecosystem
E. the source of food F. various species
In an ecosystem, plants, animals and humans live together in______.
选项
答案
C
解析
根据第一段第一句话“An ecosystem is where living creatures expand within a given area.”可知,生态系统就是所有生物在一个给定区域共存,所以本题选C。
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本试题收录于:
职称英语理工类C级题库职称英语分类
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