2、en【答案】D【解析】【详解】考查现在完成时和主谓一致。句意:他是唯一一位三年奖学金获得者的学生。句中的先行词为theonlyone,在定语从句中作主语,故谓语动词用单数。根据句中的时间状语forthreeyears,故时态用现在完成时。故D正确。2.Though theseriesofbooksis a bit too dear (昂贵), it is worthwhile _____________.A.tobe boughtB.buyingC.to buyD.buying it【答案】D【解析】【详解】
6、was so kind that he devoted all his spare time he had _________ the disabled.A.to helpingB.helpedC.helpingD.to help【答案】A【解析】【详解】考查非谓语动词。句意:这位律师是如此的善良,把自己所有的空闲时间用于帮助残疾人。分析句子可知,本句为devotesthtodoingsth致力于做某事,hehad为定语从句修饰sparetime,故选A。4.It was only when I read t
7、his story for a second time ________to appreciate its beauty.A.then I beganB.that I beganC.did I beginD.had I begun【答案】B【解析】【详解】考查强调句句型。句意:只有当我第二次读这个故事的时候,我才开始欣赏它的美。分析句子可知,本句为强调句句型,对only when I read this story for a second time部分进行强调,故用that,选B。-28-【点睛】强调句句型