【题目】Some institutions have established reading clubs to promote reading, but the effort, though ________, is far from enough.
A.appreciatedB.appreciatingC.having appreciatedD.to appreciate
在线课程【答案】A
【解析】
考查状语从句的省略。句意:一些机构已经建立了阅读俱乐部来促进阅读,但这种努力虽然受到赞赏,但还远远不够。这句话是由though引导的让步状语从句,努力和赞赏的关系是被动关系,所以这句状语从句的完整形式是though the effort is appreciated。在状语从句中,如果从句的主语和主句主语一致,且有be动词时,则省略主语和be动词,那么这句话就变成though appreciated。故此题选A。