We all know that, _____, the situation will get worse. [ ]

A. not if dealt carefully with

B. if not carefully dealt with

C. if dealt not carefully with

D. not if carefully dealt with

伤寒的病变特征是（）

A.全身淋巴结肿大

B.全身单核巨噬细胞系统细胞增生

C.肠道溃疡形成

D.肝、脾肿大

E.外周血白细胞减少