如图,C、D是线段AB上两点,已知图中所有线段的长度都是正整数,且总和为29,则线段AB的长度是( )
A:8
B:9
C:8或9
D:无法确定
Point the door.
若y=(2-m)xm2-2是二次函数,则m等于( )
如果两个数的和为0,那么这两个数 ( )
—Why did you vote for Maggie?—Because she is very ________. She always shares things with others.