请输入你的答案... Middle school students search Recent sino-japanese us-korea shikoku 156 middle school students were "outlook" investigation. 1 Japanese students - the most trouble mother for their children, often the highest expectations with other children compared. 2 Chinese students about the family burden - but not happy and satisfied communicate less. Three americans most independent, South Korea next. 4 examination results frustrating thing one. 5 the four countries exist generation gap.