题目内容

13. This outdoor training is an exercise    , as we know, teenagers' confidence can be built.

A. which     B. what

C. that     D. where

13.   D考査定语从句的关系词。句意:众所周知,户外训练是一种增强,少年自信的锻炼方式。先行词是an exercise, where在定语从句teenagers' confidence can be built中作地点状语,where可用in which代替。故选D项。

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