题目

“纷繁世事多元应，击鼓催征稳驭舟”，习.平总书记曾经指出，要善于运用底线思维的方法，凡事从坏处准备，努力争取最好的结果，做到有备无患、遇事不慌，牢牢把握主动权。这启示我们要①未雨绸缪，不打无准备之仗②统筹兼顾，牵牛要牵牛鼻子③居安思危，把危机转为机遇④见微知著，善于从细处着眼A. ①③ B. ①② C. ②④ D. ③④(2016·江苏高考)Dashan，who ________ crosstalk，the Chinese comedic tradition，for decades，wants to mix it up with the Western standup tradition.A. will be learning B. is learningC. had been learning D. has been learning