Scientific surveys conducted during the climbs that Mount Huandoy in Peru 6395 meters high
A. shown；is
B. showed；was
C. shows；was
D. showed；is
网友回答
A. shown；is
B. showed；was
C. shows；was
(答案→)D. showed；is
解析：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。