A. If a publication agrees to reprint a published manuscript, it shall clearly require the publication to indicate the word "reprint" and publicly state the original place of publication.

B academic papers that enrich the data of 50% or more of the first published content can be published again.

C manuscripts published in unpublished academic conference minutes may be published in other official journals again.

D after the same paper is published in internal materials, it shall not be published in public publications. (correct answer)