日本产Vore毒素的大肠埃希菌血清型为
A．O157:H7B．O11l:H11C．O111:H-D．K99株E．弗劳地枸橼酸杆菌
参考答案：A
A growing number of people are pursuing advanced degrees without stepping ______ ． a university campus.
A．into
B．off
C．up
D．onto
肠痈如何针刺治疗？
