军团菌肺炎首选
A．庆大霉素B．青霉素C．红霉素D．氧氟沙星E．甲硝唑
参考答案：C
The newspaper says that all construction work ________ by 2012. [ ]
A. has been completed
B. has completed
C. will have been completed
D. will have completed
空腹时大肠最多见的一种运动形式是
A．胃排空B．分节运动C．蠕动冲D．集团蠕动E．袋状往返运动
