2. 职称英语
  3. Animal migration is a seasonal or periodic movement of animals in response to ch

Animal migration is a seasonal or periodic movement of animals in response to ch

游客2025-05-06  35
问题 Animal migration is a seasonal or periodic movement of animals in response to changes in climate or food ______, or to ensure reproduction.
选项 A、alternation
B、availability
C、utilization
D、capacity
答案 B
解析 (availability可得性，可用性，有效性)。句意为：动物的移栖是指动物为了适应气候或食物可得性的变化，或为了保证繁殖而进行的季节性或周期性的迁徙。A．alternation轮流，交替；C．utilization利用；D．capacity能力，才能。
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