我国古代用麻线织布始于[ ]
A．山顶洞人
B．半坡氏族
C．大汶口文化中期
D．大汶口文化晚期
答案：B
It was in the business meeting that I made the _____ of Mr. Black.
A．association
B．acknowledgement
C．acquaintance
D．recognition
导游人员在导游过程中擅自变更接待计划应处以什么处罚？
