流行性脑脊髓膜炎的病原体是（）
A.流感嗜血杆菌B型
B.金黄色葡萄球菌
C.乙型脑炎病毒
D.铜绿假单胞菌
E.脑膜炎双球菌
参考答案：E
—I________as a cashier for 10 straight years, but I never had a sense of achievement.
—Is that why you set up your own business?
A．worked
B．have been working
C．would work
D．have worked
电子政务标准
