题干
I'll take care of your children while you are away.
A：1ook for
B：look into
C：look after
答案(点此获取答案解析）
C
I'll take care of your children while you are away.
A：1ook for
B：look into
C：look after
是R上的奇函数，且当
时，
，
等于 （ ）