There ____________ an English book in my schoolbag. [ ]
A. are
B. aren't
C. is
答案:C
医疗、预防、保健机构发生应予注销注册执业医师的情形后,应报告卫生行政部门的时限为()
A.五日内
B.十日内
C.十五日内
D.三十日内
E.六十日内
混合雾