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最难的问题我居住的大楼里都是些学富五车的老师。有一回,这里举办了一次社区活动,其中有一个节目是:看谁能提出一个最难的问题,难倒所有的参与者(当然必
The hardest problems I had in my building were teachers of five cars. At one point, a community event was held here. One of the programs was: to see who could ask the most difficult problem and to baffle all the participants (of course,