题目

函数的自变量x取值范围是_____． 答案：【答案】x≠2．【解析】根据分母不等于0求自变量的取值范围.根据题意得，x－2≠0，则x≠2.故答案为x≠2.--Would you please _________ the TV a little? Jack is doing his homework． --Terribly sorry．I will． A．turn up         B．turn down        C．turn on         D．turn off