2. 外语
  3. Some ecosystems are more (i)______than others, better able to withstand changes, while other ecosystems are more (ii)______and t

Some ecosystems are more (i)______than others, better able to withstand changes, while other ecosystems are more (ii)______and t

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问题 Some ecosystems are more (i)______than others, better able to withstand changes, while other ecosystems are more (ii)______and therefore susceptible to the slightest alteration.
选项
答案B，D
解析 while说明前后反义重复；therefore说明前后同义重复。两空联动，反义重复；第二空与susceptible(易受影响的)同义重复。stagnant不活泼的，resilient有复原能力的，fragile脆弱的；vulnerable脆弱的，dependent依赖的，ubiquitous普遍的。答案选BD。
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