最近我在为“山东教育”解答各地小学教师有关地理的问题中,并从与一些中等学校的同学谈话中,发觉了关于“库页岛为什么在第二次大战后不交还中国呢?”“蒙古人民共和国为什么要自己独立,他将来还能否再加入‘中国联邦’呢?”还有什么“‘江东六十四屯’、‘黑龙江以北,乌苏里江以东之地’,为什么不交还我们?”等等的问题,都还是 Recently, I answered questions about geography for primary school teachers for “Shandong Education”, and from conversations with classmates in some secondary schools, I found out about “why did Sakhalin not return China after the Second World War?” Why does the Mongolian People’s Republic have its own independence, and will he be able to join the ’Chinese Federation’ in the future?“ What else is there for ’Jiangdong Sixty-four Tuen’ and ’North of Heilongjiang and the land east of the Ussuri River’? Why is it not? ”Returning us?"