绩效考评效果的评估，一般分为两类，即（）

A、效益评估和效率评估

B、员工效果和管理人员效果评估

C、年度效果和半年度效果评估

D、短期效果和长期效果的评估

People today spend a () portion of their time conferring on the proper way to bring up children.

A. considerable

B. significant

C. substantial

D. surplus