如图所示，开关闭合后，位于螺线管右侧的小磁针将
A、偏转
B、向上移动
C、不偏转
D、保持静止状态
答案：A
已知函数f（x）=lg（ax-bx）（a＞1＞b＞0），且a2=b2+1，则不等式f（x）＞0的解集是______．
In China, the number of cities is increasing ________ development is recognized across the world.[ ]
A. where
B. which
C. whose
D. that
