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题目内容双击单词支持查询和收藏哦～
Each of the country's 26 sates and most of its more than 2,000 municipalities have their own police forces, _____ communication and making it difficult to establish a coordinated law-enforcement strategy.
- A.establishing
- B.impeding
- C.hampering
- D.launching
- E.obscuring
- F.preventing
B,C显示答案
以上解析由 考满分老师提供。
