For many people, paper is better material, because process for recycling paper seems much easier.
A. the; a
B. a; the
C. /; a
D. the; /
网友回答
A. the; a
(答案→)B. a; the
C. /; a
D. the; /
解析：考察冠词。第一空表示泛指，第二空有for recycling paper seems much easier作定语修饰，所以是特指。
句意为，对于很多人来说，纸是一种更好的材料，因为循环利用纸的过程看起来更容易些。