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  3. A which B where C when D whyA which B where C when D why

A which B where C when D whyA which B where C when D why

admin2020-12-24  13
问题
选项 A which
B where
C when
D why
答案A
解析本句考查的是定语从句。从句中缺少主语成分修饰名词“锻炼”，所以只有A项符合。
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