“金融危机发展的变化、国家宏观调控政策效果的不确定性为经济发展增添了变数……”“寒随一夜去,春还五更来”。美国股市经历严重的下跌后,迎来了70多年来最为强劲的涨势。自3月反弹至4月6日当周,道琼斯指数上涨了大约21%,标准普尔500指数也强劲上扬了23%。除此,美国2月份贸易逆差收窄28%,降至9年 “Changes in the development of the financial crisis, the uncertainty of the effect of the national macro-control policy adds a variable for economic development.” After the severe decline in the U.S. stock market, the strongest gains in more than 70 years were ushered in. The Dow rebounded about 21% from the March rebound to April 6, and the S & P 500 also gained strongly by 23%. In addition, the U.S. trade deficit narrowed 28% in February to 9 years