说明：  1.理解并熟悉基本的ActiveX控件（包括属性、调用方法）； 2.理解并掌握变量、函数（方法）的定义与调用；
(1. Understand and familiarize with basic ActiveX controls (including attributes, calling methods); 2. Understanding and mastering the definition and invocation of variables and functions (methods);)