Delete row item_mock_m2_003 from assignment_items

id item_mock_m2_003
assignment_id asgn_math_mock
child_id child_5b46b9f7
item_type fill_blank
parent_id item_mock_m2_000
sort_order 103
title 7/12 的分数单位是[ ]，它有[ ]个这样的分数单位。
content
status pending
created_at 2026-06-14 14:23:29
updated_at 2026-06-14 14:23:29
major_index
ocr_major_title
major_score 0.0
subject 数学
section tiankong
options []
correct_answer
image_idx 0
page_number 2
score 4.0
extra_content []
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