【正确答案】In 1982, GNP per head of the USA was 1316 US dollars, which ranked the first among the five countries while the following ones were Egypt, Indonesia and Bolivia. The GNP per head of Bangladesh was the lowest—140 US dollars. As for the daily calorie supply for per head, the highest showed up in the USA as 3652 calories while Bangladesh only had 1877 calories. The other three were all less than 3000. The average life expectancy were 40 years in Bangladesh, 50 in Bolivia, 56 in Egypt, 49 in Indonesia and 74 in the USA. Furthermore, the most developed country USA had the lowest infant mortality rate—1.2%. However, the rates in the other four countries were all around 10%, especially in Bolivia and Bangladesh which respectively numbered as 12. 4% and 13.2%. Thus, it can be concluded that the level of economy is a determining factor for the quality of life.