架空线路施工工序为勘测定位→( )→拉线安装→放线及固定导线。

A．立杆→电杆组装→挖电杆坑及拉线坑

B．电杆组装→立杆→挖电杆坑及拉线坑

C．挖电杆坑及拉线坑→电杆组装→立杆

D．挖电杆坑及拉线坑→立杆→电杆组装

Parents often give red packets to their children ______ Chinese New Year. [ ]

A. on

B. in

C. at

D. for