问题补充:
单选题ScientificsurveysconductedduringtheclimbsthatMountHuandoyinPeru6395metershigh.A.shown;isB.showed;wasC.shows;wasD.showed;is
答案:
D解析第一空与过去分词短语conducted during the climbs时间一致;第二空属于客观事实,用一般现在时。
时间:2018-08-07 06:12:11
单选题ScientificsurveysconductedduringtheclimbsthatMountHuandoyinPeru6395metershigh.A.shown;isB.showed;wasC.shows;wasD.showed;is
D解析第一空与过去分词短语conducted during the climbs时间一致;第二空属于客观事实,用一般现在时。