一、概念辨析法概念辨析法是把题目和涉及的原概念加以比较,看是否与原概念相符,而后作出判断。如:13只有公约数1。公约数是对两个或两个以上的数而言的,任何一个自然数只有约数而没有公约数,因此本题是错误的。二、条件检查法 First, the Concept Differentiation Method Concept Differentiation method is the subject and the original concept involved to be compared to see whether the original concept of consistency, and then make a judgment. For example: 13 Only 1 of the divisor. The convention is for two or more numbers, any one of the natural number is only about the number of divisors without convention, so the title is wrong. Second, the condition inspection method