Delete row 104 from pager_reading_materials

id 104
material_id mat_48ee47b9
assignment_id asgn_4479fc1b
title 长征中的炊事班
author
content 草地的天气变化得快极了：一会儿是狂风，吹得人睁不开眼；一会儿又是暴雨，淋得人直起鸡皮疙瘩。正午，雨下 ...
word_count 464
create_time 2026-06-16 11:19:51
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