— Do you ever quarrel ______ your family ______ which TV programme to watch?— No, never.
A:about; with
B:over; with
C:to; about
D:with; about
如图,直线AB、CD相交于点O,OE把∠BOD分成两部分;
(1)直接写出图中∠AOC的对顶角为____ ,∠BOE的邻补角为____ ;
(2)若∠AOC=70°,且∠BOE:∠EOD=2:3,求∠AOE的度数____
从人体健康和生命安全的角度考虑,下列做法正确的是( )
某同学手部皮肤受伤后留下疤痕,当时至少已经伤及了皮肤的( )