题干
I hate it when she calls me at work—I'm always too busy to _____ a conversation with her.
A：carry on
B：break into
C：turn down
D：cut off
答案(点此获取答案解析）
A
I hate it when she calls me at work—I'm always too busy to _____ a conversation with her.
A：carry on
B：break into
C：turn down
D：cut off
为坐标平面上三点，
为坐标原点，若
与
在
方
与
满足的关系式为( )