Is the text of the paper argumentative or expository? What style should it be?
Papers are generally argumentative. You can also judge the style of the article from the content, whether it is mainly discussion and demonstration or descriptive description (such as explaining the function, use, characteristics and appearance of things) ~ just judging from the definitions of the two styles, sometimes there is overlap, and the discussion and explanation are equally divided. You can say either one at this time ~ think for yourself!