形近字组词
暖____ 瓣____
援____ 辨____
如图所示,直线AB与CD相交于O点,∠1=∠2.若∠AOE=140°,则∠AOC 的度数为( )
关于x的方程5x+12=4a的解都是负数,则a的取值范围( )
A. Thanks.
B. Sure. I'll hang them up in a minute.
C. Sure. I'll take it out.
化简:
(1)﹣﹣(﹣8);
(2)﹣|﹣32|