改革开放30年来,我国经历了三次具有重大历史意义的思想解放。第一次思想解放冲破了“两个凡是”的思想禁锢,提出“实践是检验真理的惟一标准”;第二次思想解放打破了姓“社”姓“资”的思 In the 30 years since the reform and opening up, our country has experienced three major emancipation of the mind with historical significance. The first emancipation of the mind broke through the ideological imprisonment of “two of all ”, suggesting that “practice is the sole criterion for testing truth ”; the second emancipation of the mind broke the surname “social ” surname "capital Thinking