“七一”重要讲话指出:“回顾90年中国的发展进步,可以得出一个基本结论一一办好中国的事情,关键在党。”关键在党,就是要不断保持和发展党的先进性建设。先进性是马克思主义政党的本质属性,是马克思主义政党的生命所系、力量所在。90年来, In his important speech on “July 1”, he pointed out: “Recalling the 90-year development and progress in China, we can draw a basic conclusion that the key to running a business well in China is to keep and develop the key to the party.” The Advanced Construction of the Party. The advanced nature is the essential attribute of a Marxist political party and the place and strength of the Marxist political party. For 90 years,