16. Recycling ______ the process of collecting used materials and manufacturing them into new products.
(A) which is
(B) which has
(C) which is done by
(D) is

答案：登入後查看
統計： A(150), B(30), C(78), D(396), E(0) #2927373

詳解 (共 2 筆)

#5486543
Recycling(主詞) ______...
(共 144 字，隱藏中）
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#5803632

補充中文翻譯：回收再利用是將使用過的材料收集起來，再加以製造成新產品的過程。


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