— Isn't that your new English teacher over there?
— No, it ______ be her. She doesn't have long hair.
A:can't
B:must not
C:won't
D:may not
如图,填在各方格中的三个数之间均具有相同的规律,根据此规律,n的值是( )
当今世界,各国之间激烈的经济竞争和科技竞争,归根到底是_____的竞争和_____的竞争。( )
解方程:(3x﹣1)2=(x+1)2