B

A(n) (81) ___________writer about 2,000 years ago called Pausanias came on a(n) (82) ___________journey to find out about the present-day Olympic Games. He interviewed a(n) (83) ___________named Li Yan. He learned that there were two main (84) ___________of Games—the Winter and Summer Olympics, and that both were held four years on a regular (85) ___________.Anyone who has reached an agreed standard for their event can be admitted as (86) ___________.To Pausanias’s surprise, women are playing a very important role in many games. Every country wants to (87) ___________the Olympic Games, and it is a great (88) ___________but also a great honour to be chosen. Li Yan told him that the Chinese were very (89) ___________because the 2008 Olympic Games would be held in Beijing. Pausanias was happy to know the (90) ___________of the Olympics—“Swifter, Higher and Stronger” and he felt very interested in it. 

医疗机构在发现甲类传染病时，对疑似患者在明确诊断前，应在指定场所进行

A．访视

B．留验

C．单独隔离治疗

D．医学观察

E．就地诊验