I usually take something to read when I travel by train        I feel bored.[ ]

A. in case          

B. so that            

C. as if            

D. even though

大面积烧伤用氨苄青霉素、多黏菌素治疗7天后，骤起寒战、高热(39.5℃～40℃)，病情迅速恶化，神志淡漠，嗜睡，血压下降，休克。血白细胞计数25×109／L，分类见中幼与晚幼粒细胞，首先应考虑()

A.革兰阴性细菌脓毒症

B.革兰阳性细菌脓毒症

C.真菌性脓毒症

D.绿脓杆菌脓毒症

E.脓毒败血症