【题目】Finding a partner and settling down has long been convention in many countries.New data，however，suggest that the trend .
A. change B. be changing
C. be changed D. is changing
在线课程【答案】D
【解析】句意为：在许多国家，“成家立业”是约定俗成的传统。然而，一组全新数据表明该趋势正在发生改变。此处suggest为“表明”之意，故后面的宾语从句应用陈述性语气。