思维品质是指个体思维活动特殊性的外部表现。它包括思维的严密性、思维的灵活性、思维的深刻性、思维的批判性和思维的敏捷性等品质。函数作为高中数学的主线,贯穿于整个高中数学的始终。函数的定义域是构成函数的两大要素之一 Thinking quality refers to the individual behavior of the specific external thinking. It includes the rigor of thinking, the flexibility of thinking, the profoundness of thinking, the critical thinking, and the agility of thinking. Function as the main line of high school mathematics, runs through the entire high school mathematics. The function’s domain is one of the two major elements that make up a function