恶性肿瘤的淋巴道转移方式哪种最多见（）。

A.区域淋巴结转移

B.穿过或绕过淋巴结的"跳跃式"转移

C.经皮肤真皮层淋巴管的转移

D.在毛细淋巴管内形成癌栓

E.经皮肤淋巴管转移

. It is uncertain __ side effect the medicine will bring about, although about two thousand patients have taken it.

A．that

B．what

C．how

D．whether