在辅导结束后对实验组、对照组和控制组的前后测成绩分别进行统计分析，并在三个月后进行了追踪调查。

Then after the end of the guidance, statistical analysis of the three groups' former scores and subsequent scores is taken. After three months and a half, a tracking survey conducted was done.

youdao

在辅导结束后对实验组、对照组和控制组的前后测成绩分别进行统计分析，并在三个月后进行了追踪调查。

Then after the end of the guidance, statistical analysis of the three groups' former scores and subsequent scores is taken. After three months and a half, a tracking survey conducted was done.

youdao