我国明代著名航海家郑和是()人。
A.回族
B.汉族
C.蒙古族
D.壮族
参考答案:A
— I hear John refused to tell the truth and was taken away by the police.
— Where did you _____? [ ]
A. pick that up
B. put that up
C. make that up
D. take that up
新生儿化脓性脑膜炎最常见的病原菌是()。
A.脑膜炎双球菌
B.肺炎双球菌
C.流感杆菌
D.溶血性链球菌
E.大肠杆菌