表面横裂
参考答案：
铸坯表面沿宽度方向的裂纹叫做表面横裂。角部出现的横裂叫角部横裂。
This kind of coat _ well, so the coats here have _____. [ ]
A. is sold, been sold out
B. sells, been sold out
C. sells, sold
D. is sold, sold
班级文化是自然而然就可以形成的。（）
