A:y=± 14 x
B:y=± 13 x
C:y=± 12 x
D:y=±x
“三角形中至少有一个内角大于等于60°”,这个命题用反证法证明应假设 ____
新文化运动中,对旧道德、旧礼教的批判最为猛烈的是( )
----The new street is so clean. _______ the way, do you enjoy living here? ----Of course I do. Life has become much better _______ many ways.