2. 外语
  3. The passage gives a general description of an invasive insect, HWA. Releasing one species of non-native bug to kill another cou

The passage gives a general description of an invasive insect, HWA. Releasing one species of non-native bug to kill another cou

admin2009-09-12  66
问题 The passage gives a general description of an invasive insect, HWA.
Releasing one species of non-native bug to kill another could create ______ .
选项
答案another type of infestation
解析 读完原文，发现Risky Business下讲了用St bettles来控制HWA这种方法可能带来的风险，而题干正是谈的这种方法，定位Risky Business下的段落，首段即可找到答案。
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大学英语四级

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