If you also note there are some little words, it's certainly in the New Revised Standard(NRS) Version, the letter footnote numbers. 仔细的话可能会注意到一些小字母,新修订的标准版上肯定有,字母脚注数字。
New Millennium, the greater China launched a nation-wide curriculum reforming campaign for Full-time Compulsory Education and Senior High School in 2001 and then revised The English Curriculum Standard for Senior High School in 2003. 2001年,中国在全日制义务教育和高中阶段开展了课程改革,2003年修改了高中阶段的课程标准。