1.（2011•四川卷•T4）Frank insisted that he was not asleep I had great difficulty in waking him up.
A. whether B. although C. for D. so
【解析】选B 考查让步状语从句。句意为：尽管我费了好大劲才叫醒弗兰克,但是他坚持说没有睡觉。语意上构成了一种让步，故选B。
2.（2011•四川卷•T6）As is reported, it is 100 years _____ Qinghua University was founded.
A. when B. before C. after D. since
【解析】选C 考查时间状语从句。句意为:据报道，清华大学建校100年了。 It’s +时间段+since 从句意为“自从……以来……“。故选C。
