公共关系是企业以消费者利益为出发点，通过有效的双向信息沟通，在公众面前树立起良好的形象和声誉，从而实现企业的既定目标。
参考答案：错
The good situation came at last ____ we had been expecting in the past two years. [ ]
A. where
B. that
C. when
D. in which
动脉导管未闭的治疗原则。
