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谁知道这道题的答案?
Because paper of all kinds is the biggest single component of municipal trash, many municipalities have tried recycling to reduce the cost of trash disposal.
(A) Because paper of all kinds is the biggest single component of municipal trash, many munici- palities have tried recycling to reduce the cost of trash disposal. (B) Because paper of all kinds is the biggest single component in municipal trash, many munici- palities tried to recycle so that the cost of trash disposal is rduced. (C) Because paper of all kinds are the biggest single components in municipal trash, many munici- palities have tried to recycle to reduce the cost of trash disposal. (D) All kinds of paper are the biggest single compo- nents of municipal trash, and so many munici- palities have tried recycling to reduce the cost of trash disposal. (E) All kinds of paper is the biggest single compo- nent of municipal trash, so many municipalities have tried to recycle so that the cost of trash disposal could be reduced.
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