We finally arrived at a(n) that the work must be pleted within 3 days.
A. impression
B. approach
C. permission
D. conclusion
网友回答
A. impression
B. approach
C. permission
(答案→)D. conclusion
解析：名词辨析。A印象；B方法；C允许；D结论；句意：我们最终得出一个结论，这份工作一定要在3天以内完成。根据句意说明D正确。