影响钢渣粘度的主要因素是（）。
A.成分
B.温度
C.渣量
D.钢种
E.碳含量
参考答案：A, B
Most people in Britain believe that it's a good idea to save money and try to _____ being in debt. [ ]
A. forget
B. delay
C. avoid
D. escape
社会变迁
