求翻译：本实验包括初中和高中两个部分。　我们以上海外国语大学附属浦东外国语学校学生为实验对象。　初中阶段选择预备年级两个班(B班)共45人，高中阶段选择高中一年级二班、三班(B班)共44人。　分班标准根据其入学成绩．每个班的前一半学生划分到A班，后一半学生划分到B班。　实验从2002年9月开始至2003年6月结束，历时一学年。是什么意思？

This experiment included two junior and senior sections.　Our Pudong foreign language school affiliated to Shanghai International Studies University students as experimental subjects.　Junior select reserve grade two classes (class b), 45, choice during the high school's first year in high school clas

The present experiments included two parts junior high and high school. We are in Shanghai Pudong foreign language school Foreign Language University students to do experiments. Select the preparatory grade junior high school stage two classes (B ) classes, a total of 45 people choose a high school

正在翻译，请等待...

This experiment included two junior and senior sections.　Our Pudong foreign language school affiliated to Shanghai International Studies University students as experimental subjects.　Junior select reserve grade two classes (class b), 45, choice during the high school's first year in high school clas

正在翻译，请等待...