Click the right mouse button in the blank space of this line-Table Properties-Line-and check Allow line breaks across pages, and it will be OK.

There may be things like section break or page breaks (these things may be hidden). Click "All" in Tools-Options-View-Format to see if there is a delimiter.

Before writing the opening report, you should first understand the definition of the opening report. The opening report refers to the author's comments on scientific research topics, and it is also the basis for the graduation thesis defense Committee to examine the students' defense qualifications. Presented to relevant experts, scholars and scientific and technological personnel, who will comment on scientific research topics. Many people have misunderstandings about the opening report.