在产褥感染中，下列哪种细菌的感染最易发生感染性休克()
A．金黄色葡萄球炎
B．大肠杆菌
C．β-溶血性链球菌
D．肺炎球菌
E．厌氧性球菌
参考答案：B
What did he do a. He telephoned me. b. He picked up the phone. c. He put the receiver down. d. He put my hanger up.
将人胰岛素基因导入大肠杆菌细胞内的技术是_______________________________。
