When an unaccompanied minor arrives for check - in， the first thing you should do is：

When an unaccompanied minor arrives for check - in， the first thing you should do is：
A.Give them a snack.
B.Verify their travel documents and the unaccompanied minor service details.
C.Ask about their favorite game.
D.Send them directly to the gate.
正确答案：B
试题解析：当无人陪伴的未成年人前来办理登机手续时，首要任务是核实他们的旅行文件以及无人陪伴未成年人服务的相关细节，以确保他们的行程安全和顺利。