导致凝脂翳最严重的微生物是:
A.肺炎双球菌
B.Koch-weeks杆菌
C.流行性杆菌
D.绿脓杆菌
E.葡萄球菌
参考答案:D
No sooner ____ to the cinema ____ the film began. [ ]
A. had he got, than
B. he had got, when
C. did he get, than
D. had he got, when
下述何症不属于胃气上逆( )
A.呕吐B.吞酸C.太息D.嗳气