问题
选择题
In order to have _____ better understanding of the accident, the three witnesses were called for _____ second meeting．
A．a; a
B．the; a
C．a; 不填
D．不填; the
答案
答案：A
have a better understanding of“对…有很好的了解”；序数词前用不定冠词表示“再一次、又一次”不表顺序。所以答案为A。