She recommended that everybody _____ the small town no later than 12 o'clock the next noon. [ ]

A. reached

B. reach

C. should be reached

D. be reaching

检测HP感染属侵入法的是（）

A.HP培养

B.血清HP检查

C."C或"C尿素呼气试验

D.粪便幽门螺杆菌抗原检测

E.检测血PCA和IFA