浮生长恨欢娱少,肯爱千金轻一笑?为君持酒劝斜阳,且向花间留晚照。陈侯立身何坦荡,虬须虎眉仍大颡。If productivity measures the efficiency of an economy, a measure of what an economic system produces is its gross national product (GNP), which is the current market value of all final goods and services that a nation produces within a particular period. |