【单选题】_____ they may not succeed, they will try their best.
【简答题】设递增等差数列 的前n项和为 ,已知 , 是 和 的等比中项. (l)求数列 的通项公式; (2)求数列 的前n项和 .
【单选题】选用连续标注时,如果起点是对齐标注,则连续标注的结果是( )
D.
可以在标注的过程中设置是线性标注还是对齐标注
【单选题】-They say that they will try their best _their dreams.
【单选题】______ they may not succeed, they will try their best.