2. 外语
  3. Because insect communities serve as a sort of barometer, (i)______conditions in their (ii)______, an entomologist’s analysis of

Because insect communities serve as a sort of barometer, (i)______conditions in their (ii)______, an entomologist’s analysis of

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问题 Because insect communities serve as a sort of barometer, (i)______conditions in their (ii)______, an entomologist’s analysis of the insect species in a handful of soil can reveal much about the ecosystem.
选项
答案C，D
解析 逗号说明前后同义重复。第一空与reveal(显示)同叉重复。preserve保护，stabilize使稳固，register表现出。答案选C。第二空与ecosystem(生态系统)同义重复。environment环境，range范围，destination目的地。答案选D。
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