_____ is it_____ I've grown so crazy about everything to do with nature? [ ]

A. Why; that

B. Why; what

C. What; that

D. What; what

关于侵袭性胸腺瘤的描述，错误的是（）

A.CT表现为边缘不清的不规则肿块

B.纵隔受侵犯的主要征象是结构间脂肪层消失

C.可沿胸膜种植到同侧后纵隔、心包、后肋膈角区

D.可通过主动脉裂孔和食管裂孔进入腹腔

E.易发生肺内多发性转移