The teacher took my hand in h____ and said “keep on going never give up” .
区别溶液和胶体最简单的方法是( )
①事物发展是一个不断循环往复的过程
②事物发展是一个量变不断积累的过程
③事物发展是一个螺旋式上升的过程
④事物发展是一个不断“扬弃”的过程
如图,在Rt△ABC中,∠C=90°,∠B=30°,AB的垂直平分线DE交AB于点D,交BC于点E,则下列结论不正确的是( )
— Are you cleaning my room, Serena?
— ______. I can't bear seeing your room in a mess!