以下（）码头不是按平面分类
A.工作船码头
B.顺岸码头
C.墩式码头
D.突堤码头
参考答案：A
—What a terrible earthquake!
—Yes. It came at about 6.30 this morning. I _____ to the bus stop at that time.[ ]
A. walk
B. was walking
C. walked
D. am walking
目前菌痢的病原治疗首选（）
A.氯霉素
B.四环素
C.磺胺药
D.喹诺酮类
E.呋喃唑酮
