Which of the following can NOT be called recycling？
A. Making new paper from used paper.
B. Using.worn-out rubber tires to make new ones.
C. Burying metal cans and glass bottles.
D. Producing new steel from metal in broken cars.
查看答案
请选择（2）处的最佳答案．
A. a little
B. little
C. much
D. a great deal
Nowadays, men and women receive equal salary.
A. wage
B. pay
C. payment
D. waste
An understanding of English ____
A．tookB．spentC．usedD．had
A. took
B. spent
C. used
D. had
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