题干
—______ is the red dress?
—I think it is Mary's. _______ is red.
A：What; Her
B：Where; Hers
C：Whose; Hers
答案(点此获取答案解析）
C
—______ is the red dress?
—I think it is Mary's. _______ is red.
A：What; Her
B：Where; Hers
C：Whose; Hers
既是偶函数又是周期函数，若
，且当
时，
，则
的值为 