下列哪项属于成本观念的最低层次()。
A、从制造环节入手控制成本
B、从预算环节入手控制成本
C、从战略环节入手规划成本
D、从流程重组环节入手优化成本
参考答案:A
—Did Alan enjoy seeing his old friends yesterday —Yes, he did. He()his old friends for a long time.
A. didn't see
B. wouldn't see
C. hasn't seen
D. hadn't seen
简述幼儿社会学习的指导要点。