A:红红
B:东东
C:无法判断
关于物质性质及用途的描述中错误的是( )
一只不透明的箱子里共有3个球,其中2个白球,1个红球,它们除颜色外均相同.
下列关于细胞核的结构和功能的叙述,不正确的是( )
— Paul is not very popular among his classmates.
一 Yeah. Because he often plays jokes on them.