—Oh, did you? I am sorry but I switched off my phone early yesterday evening.
A:answer
B:information
C:letter
若代数式(m-2)x2+5y2+3的值与字母x的取值无关,则m的值是( )
学习了“基因在亲子代间的传递”后,小辉同学找来一根白色长绳,在长绳上用红、橙、黄、绿等颜色涂出了长短不一的区段,将长绳螺旋处理成短棒状.长绳、各颜色区段,短棒分别代表的是( )