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