诊断立克次体病最常用的血清学反应是
A．外斐试验B．补体结合试验C．间接凝集反应D．免疫荧光试验E．ELISA
参考答案：A
What a(n) _______ it is that the new couple were born in the same year and on the same day.
A．acquaintance
B．consequence
C．circumstance
D．coincidence
按培养基的物理性状发酵分为（）和液体深层发酵。
