下列哪种疾病与遗传无关（）
A.结节性硬化症
B.汗管瘤
C.寻常疣
D.痤疮
E.毛发上皮瘤
参考答案：C
_____ has been announced, we shall have our final exams next month. [ ]
A. That
B. As
C. It
D. What
6.3×101-6.3．
