Inthepasthalf-century,averageincome

发布时间：2020-07-12 04:03:12

In the past half-century, average ines _______ quickly in developed countries, yet happiness levels have remained almost the same












A.have risen











B.had risen










C.rose










D.rise

网友回答

A解析考查时态。根据时间状语In the past half-century在过去的半个世纪，可知用现在完成时，选A。
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