葡萄球菌可以产生的毒素是（）
A.θ毒素
B.杀白细胞素
C.紫癜形成因子
D.致死因子
E.红疹毒素
参考答案：B
Black boxes, _____ to record flightdata together with pilots' conversation and noises from theaircraft,
are important for people to find out the cause of an aircrash. [ ]
A. design
B. designing
C. designed
D. were designed
患者女，46岁，左颊不适2周，发病前曾因牙痛服过大量抗生素。检查病损可部分被擦掉。
应进行的治疗（）
A.调磨牙尖
B.皮质激素局部封闭
C.口服皮质激素
D.手术切除病损
E.口服抗真菌药物
