水中的主要致病菌有痢疾杆菌、霍乱弧菌和()
A.大肠杆菌
B.伤寒杆菌
C.霉菌
D.黏液菌
参考答案:B
The students are too _____ to keep their eyes open in class because of staying up late.
A.sleeping
B.asleep
C.sleep
D.sleepy
下列哪种疾病引起的发热多不伴寒战()
A.疟疾
B.大叶性肺炎
C.伤寒
D.流行性感冒
E.急性肾盂肾炎