1．We don't need magic to change the world ______ we carry all the power we need inside ourselves already：the power to imagine better，said J．K.Rowling.
A．though B．unless
C．before D．when
D [考查状语从句的用法。句意：J.K.Rowling说，当我们运用了我们需要的所有内部的全部力量时，我们不需要魔法来改变世界：想象的力量更好。though尽管，引导让步状语从句；unless除非，引导条件状语从句；before在……之前，引导时间状语从句；when当……时候，引导时间状语从句。故选D。]
