精选优质文档-倾情为你奉上Lesson 4 The Economic Scene: A Global Perspective 经济景观:全球视野(Excerpts)1. In 1991,for the second year in a row, the economies of low-income and middle-income countries virtually stagnated, as measured by an increase in per capita gross domestic product (GDP). Aggregate output for developing countries advanced by slightly less than 2 per cent during 1991 (similar to the weak performance of 1990), implying an easing in per capita income of 0.1 per cent.1991年,中低收入国家以人均国内