A:﹣C5H9NO4
B:﹣C3H5NO2
C:﹣C5H7O2
D:﹣C3H5O2
选出你所听到的词语( )
— I _______________ at 6:00, but I arrived at 8:00.
《秦王破阵乐》歌颂的是( )