题干
— Could you help me _____ these books to the classroom?
— No problem. Let's go.
A：taking
B：not take
C：take
D：takes
答案(点此获取答案解析）
C
— Could you help me _____ these books to the classroom?
— No problem. Let's go.
A：taking
B：not take
C：take
D：takes
是
上的偶函数，若对于
，都有
，且当
时，
，则
的值为( )