每回收1吨废钢铁可炼好钢多少吨？（）
A、0.4
B、0.5
C、0.8
D、0.9
参考答案：D
When I returned to my hometown, I was nearly lost. Almost ______ had changed. [ ]
A. nothing
B. anything
C. something
D. everything
论述拍卖人的法律义务
