For a pregnant passenger checking in， you should：

For a pregnant passenger checking in， you should：
A.Ask for proof of pregnancy.
B.Provide information on any special in - flight services available for pregnant passengers， like extra seat-belt extensions.
C.Discourage her from flying.
D.Make jokes about her condition.
正确答案：B
试题解析：提供关于机上为孕妇乘客可提供的特殊服务信息，如额外的安全带延长装置等，能让孕妇了解相关情况并做好准备。