单选题
英语六级
2017-03-12
A．The strips of a special plant.
B．Wood or the bark of trees.
C．Worn-out cloth and straw.
D．Some common chemicals.
参考答案
A
答案解析
此题暂无解析
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A．Large amounts of newspaper and colored paper.
B．Small pieces of rags or cloth.
C．Old envelops with little printing.
D．Soft wood or bush plants.
A．To mix pulp with water.
B．To keep the shape and thickness of the paper.
C．To keep the paper strong enough.
D．To dry the paper quickly.