人力资源培训开发计划的长度依赖于( )。
A．形式 B．时间C．地点 D．内容
参考答案：D
The family were enjoying their dinner, so I was wondering if I had arrived at a/an ________ time.[ ]
A. awkward
B. prosperous
C. flexible
D. particular
简述紫露草微核试验早期四分体的特性。
