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Which of the following statements is true according to the passage?A.The issue of rubbish-
Which of the following statements is true according to the passage?
A.The issue of rubbish-dealing can not be completely solved.
B.Recycling plants will be in great need in rural areas.
C.The plants can process a wide variety of materials.
D.Effective ways of sorting out rubbish have long been in existence.