According to the statistics, listening to loud music at rock concerts ______ hearing loss in some teenagers in the past 2 decades.

A．have caused

B．caused

C．had caused

D．has caused

下面说法哪项是恰当的？（）

A.树枝状血管为异型血管

B.白斑和白色上皮是同样的

C.镶嵌可见于宫颈癌和不典型增生

D.宫颈糜烂表面可见异型血管

E.白色上皮为恶性病变