As for my experience last night, I was in a nightclub then and a fight between two young men broke in.____
常温时,下列溶液中各粒子的浓度关系正确的是( )
在等差数列{an}中,a1+a2+a3=9,a6=11,则该数列的前7项的和是( )
在海边看远处驶来的轮船, 出现下图所示的现象,它反映的地理事实是 ( )