【单选题】痢疾志贺菌的致病因素除侵袭力外,还可产生
【判断题】对新开放的旅游景点或不熟悉的参观旅游点,地陪必须先去踩点,以保证旅游活动的顺利进行。P72
【简答题】痢疾志贺菌的致病因素主要有____、____和____。
【单选题】— Excuse me. Could you tell me _______? — It will leave at 4:00 p.m.
A.
how will you go to Beijing
B.
how you will go to Beijing
C.
when will the bus leave for Beijing
D.
when the bus will leave for Beijing
【简答题】痢疾志贺菌的致病因素主要有()()和()