A:民主集中制原则
B:权利和义务相统一原则
C:公民在法律面前一律平等原则
D:国家利益与个人利益相结合原则
We have been in the school ______ three years ago and Mrs. Lee Has taught us English_______ three years.
对如图漫画内容理解正确的是( )
①治理污染,迫在眉睫 ②保护土地,综合防治
③环境治理,成效显著 ④守卫家园,征服自然