inputbox 函数运用，一个简单的计算周平均温度的程序-inputbox functions use a simple program to calculate the weekly average temperature

输入60个学生成绩（用inputbox），并统计其平均分、最高分、最低分和优秀及格人数-Enter the 60 student achievement (with inputbox), and statistical average, the highest score, lowest score, and outstanding number of passes