Test analysis: This question examines the discrimination of calligraphy style. A belongs to cursive script, B belongs to regular script, C belongs to official script and D belongs to running script, so D fits the meaning of the question.
Comments: Pay attention to the characteristics of calligraphy works. Regular script strokes are well prepared, and the structure and shape are rigorous; The cursive strokes are simple and the lines are smooth and indulgent; Running script rules and indulgence coexist; The official script is flat and smooth, and the strokes are smooth and stretched.