GRE Reading Comprehension: JiJing 352-GRE阅读机经352篇 - JDJ55MHT2XHUU58FJ

The author of the passage cites "several studies of voting behavior in the United States" to A. suggest that rates of change in political participation have moderated B. provide a possible explanation for a propensity among certain researchers C. indicate an area of research that is particularly promising D. speculate about the implications of a change E. suggest that a particular area of study has not been very productive