计划的特征包括（）。
A.目的性
B.首位性
C.普遍性
D.效率性
E.创造性
参考答案：A, B, C, D, E
Not until his father died _______ what his father really meant.
A．do they realize
B．did they realize
C．realized they
D．had they realized
彩色反转片在冲洗前必须对冲洗药液进行监控，需要使用试条进行冲洗后的密度测量，与标准试条的数据进行对照，偏差符合要求后才能进行反转片的批量冲洗。( )
