Our son doesn't know what to__________at the university; he can't make up his mind about his future.[      ]

A. take in            　

B. take up          

C. take over      

D. take after

关于疣状白斑下列哪项说法是错误的（）

A.表面有毛刺状突起

B.常有粗糙感

C.与烟酒刺激无关

D.有明显的局部刺激因素

E.损害呈乳白色