如果图形中每个后面的峰和谷都高于前面的峰和谷,则趋势就是( )。
A.上升方向 B.下降方向 C.水平方向 D.无趋势方向
参考答案:A
She was told to wear flat shoes _____ her back problem. [ ]
A. on account of
B. regardless of
C. in terms of
D. in case of
据考证,指南车为三国()所造。