many countries in Latin America have been trying to reduce gaps in ine, America has allowed inequality to grow.
A. While
B. Since
C. If
D. Where
网友回答
(答案→)A. While
B. Since
C. If
D. Where
解析：
这题考查连词的用法：while这里是“虽然”，表示转折，句意是：虽然拉丁美洲的很多国家一直在减少收入差别，美国允许这种不平等的增长。选A。