Rock-climbing is a breathtaking activity, very popular nationwide among young people, ______ cooperation as well as courage plays an important roleA.whoB.whichC.whereD.of which
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C解析试题分析:考查定语从句。从结构判断_____ cooperation as well as courage plays an important role.是间隔性定语从句，修饰先行词activity，因为定语从句中主谓宾全，所以缺少状语，选项中只有where 是关系副词可以做状语，所以正确