2. 职称考试
  3. The water in this part of the river has been contaminated by sewage(污水). (200...

The water in this part of the river has been contaminated by sewage(污水). (200...

admin2020-12-24  53
问题 The water in this part of the river has been contaminated by sewage(污水). (2002年真题)（）
选项 A.polluted
B.downgraded
C.mixed
D.blackened
答案A
解析
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