22. The voluminous personal papers of Thomas Alva Edison reveal that his inventions typically sprang to life not in a flash of inspiration but evolved slowly from previous works. A. sprang to life not in a flash of inspiration but evolved slowly B. sprang to life not in a flash of inspiration but were slowly evolved C. did not spring to life in a flash of inspiration but evolved slowly D. did not spring to life in a flash of inspiration but had slowly evolved E. did not spring to life in a flash of inspiration but they were slowly evolved
1． 并列结构 （一级排除 A,B,D） not … but 结构 ， 前后的形式，时态都要绝对平行 并列结构的时态要一致才是并列!!!è互相并列的成分是不能作为时间参照点的
2． 被动语态(二级排除 E ) 被动语态在GMAT中必须有理由才能出现。(使用被动态一定要由根据)è出现by