—You're not ______ that job in the right way.
—Don't worry. I will try to improve it.
A:going about
B:going for
C:going after
D:going around
如图,若在中国象棋盘上建立平面直角坐标系,使“帅”位于点(﹣1,﹣2),“马”位于点(2,﹣2),则“兵”位于点( )
当x=2时,代数式x2(2x)3﹣x(x+8x4)的值是( )
下列各物质按照单质、氧化物、混合物的顺序排列的是( )
——I'll go to Hong Kong for a trip next weekend. ——Great! _______
设等差数列an的公差d≠0,a1=4d,若ak是a1与a2k的等比中项,则k=( )