When his father was fifteen, he started ________ the national team.    [ ]

A. to play with  

B. to play for  

C. playing with    

D. play for

课程标准中对“面向全体学生”的诠释为：着眼于学生全面发展和终身发展的需要，提出全体学生通过努力都能达到的基本要求；同时也有较大灵活性，实施因材施教，促进每个学生的充分发展。( )