测验者的成绩存放在硬盘上的record文件中，如删除该文件后，则调用系统运行时会初始化该文件，并设置初始的测验者姓名和测验分数。 paper1.txt、paper2.txt、paper3.txt、paper4.txt是系统设置的四份测验试卷。只可修改内容，不可删除。 -Test results are stored in the record file on the hard disk, such as delete the file, then the call is initiali