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

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

admin2009-06-15  63
问题 The water in this part of the river has been contaminated by sewage (污水).
选项 A、polluted
B、downgraded
C、mixed
D、blackened
答案A
解析
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