抗菌药物的给药途径多种多样，以下说法中错误的是（）

A.轻症感染可接受口服给药者，应选用口服吸收完全的抗菌药物

B.重症感染、全身性感染患者初始治疗应静脉给药，以确保药效

C.局部用药宜采用刺激性小、不易吸收、不易导致耐药性和不易致过敏反应的杀菌剂，如青霉素类、头孢菌素类

D.病情好转能口服时应及早转为口服给药

E.治疗全身性感染或脏器感染时应避免局部应用抗菌药物

According to some scientists, the computer will do much harm to people's health as smoking and drags do.

A．does much harm... smoking

B．will do as much harm... cigarettes

C．will be doing as much harm... smoking

D．does as much harm... cigarettes