Delete row mock_seq_0040 from assignment_items

id mock_seq_0040
assignment_id asgn_cn_mock
child_id child_5b46b9f7
item_type major
parent_id
sort_order 40
title
content
status pending
created_at 2026-06-14 08:07:16
updated_at 2026-06-14 08:07:16
major_index 七
ocr_major_title 七、判断下面说法的正误
major_score 4.0
subject chinese
section
options
correct_answer
image_idx 0
page_number 18
score 0.0
extra_content
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