1.练高考
1. 【2014浙江卷第5题】I didn't become a serious climber until the fifth grade，________ I went up to rescue a kite that was stuck in the branches of a tree.
A．when B．where C．which D．why
2. 【2014天津卷第12题】] English is a language shared by several diverse cultures, ________ uses it differently.
A. all of which B. each of which
C. all of them D. each of them
3. 【2014四川卷第4题】] Until now, we have raised 50，000 pounds for the poor children, ________ is quite u nexpected.
A．that B．which
C．who D．it
