问题
选择题
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
答案
答案：D
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。
