能不能抓住机遇，加快发展，是一个国家、一个民族赢得主动、赢得优势的关键所在。回顾中国的历史，在十五世纪以前，出现过汉唐盛世，中国的经济技术在世界上一直处于领先地位。十五世纪以后，中国的经济技术所以逐渐落后了，最根本的是由于丧失了一些重要的机遇，没有做好发 Whether or not we can seize the opportunity and accelerate development is the key to win the initiative and win the advantage of a nation and a nation. Reviewing the history of China, before the 15th century, Han and Tang dynasties flourished, and China’s economy and technology have been leading the world. After the 15th century, China’s economy and technology have gradually lagged behind. The most fundamental reason is that due to the loss of some important opportunities,