Translation
raise questions Production 问题, 疑问, 怀疑, 问问题, 表示怀疑
raise the question Production 问题, 疑问, 怀疑, 问问题, 表示怀疑
remains to be asked Production 问, 请求, 询问
research question is
research questions
rhetorical questions Production 问题, 疑问, 怀疑, 问问题, 表示怀疑