{"ok":true,"question":{"id":21228,"question_uuid":"3606f4e6-7d02-4751-b534-31815b704356","job_id":4,"source_file":"A中考/2026江苏中考期末数学试卷+答案85.pdf","source_page_start":5,"source_page_end":5,"source_bbox":"[30.0, 248.74, 480.84, 321.69]","subject_code":"math","grade_level":"JUNIOR","tree_code":"KT_JUNIOR_MATH_STANDARD","question_type":"subjective","canonical_json":"{\"year\": null, \"blocks\": [{\"text\": \"先化简,再求值: a2−4 ÷ _{a−2}− _{a2}_{+a}, 然后从0,1,2,3中选一个合适的a值代入求解． a2+4a+4 a2+2a 1\", \"type\": \"text\"}], \"source\": {\"bbox\": [30.0, 248.74, 480.84, 321.69], \"file\": \"A中考/2026江苏中考期末数学试卷+答案85.pdf\", \"regions\": [{\"bbox\": [30.0, 248.74, 480.84, 321.69], \"page\": 5}], \"section\": \"match\", \"page_end\": 5, \"page_start\": 5, \"section_label\": \"智适化匹配练习 ★ 交互式系统学习\", \"answer_regions\": []}, \"version\": 1, \"grade_level\": \"JUNIOR\", \"number_label\": \"5\", \"subject_code\": \"math\", \"question_type\": \"subjective\", \"content_sha256\": \"088f0eae98458cd5eae94d4fcf42a47a7680e9d12f3fe5760e6b72a56c63c34a\"}","body_html":"<div>先化简,再求值: a2−4 ÷ _{a−2}− _{a2}_{+a}, 然后从0,1,2,3中选一个合适的a值代入求解． a2+4a+4 a2+2a 1</div>","answer_html":"","ways_html":"","explain_html":null,"difficulty":2,"score":null,"year":null,"parse_status":"PARSED","qa_status":"QUARANTINED","retry_count":0,"final_score":null,"error_message":"处理异常: LLM call failed after retries: HTTPConnectionPool(host='127.0.0.1', port=8092): Read timed out. (read timeout=120) [endpoints: http://127.0.0.1:8091/v1 -> http://127.0.0.1:8092/v1]","published_question_id":null,"content_sha256":"088f0eae98458cd5eae94d4fcf42a47a7680e9d12f3fe5760e6b72a56c63c34a","created_at":"2026-09-24T23:22:50","updated_at":"2026-09-25T00:04:01","answer_missing":true,"formula_fallback":false,"_number":"5","_section":"match","_section_label":"智适化匹配练习 ★ 交互式系统学习"},"assets":[],"knowledge":[],"audits":[{"id":418723,"import_question_id":21228,"audit_type":"STRUCTURE","auditor_name":"structure-auditor","status":"PASS","score":0.95,"input_snapshot":"先化简,再求值: a2−4 ÷ _{a−2}− _{a2}_{+a}, 然后从0,1,2,3中选一个合适的a值代入求解． a2+4a+4 a2+2a 1","result_json":"{\"ok\": true, \"issues\": [], \"confidence\": 0.95}","created_at":"2026-09-25T00:00:00"},{"id":418724,"import_question_id":21228,"audit_type":"FORMULA","auditor_name":"formula-auditor","status":"PASS","score":1.0,"input_snapshot":"","result_json":"{\"note\": \"无公式块\", \"checked\": 0}","created_at":"2026-09-25T00:00:00"},{"id":418725,"import_question_id":21228,"audit_type":"KNOWLEDGE","auditor_name":"knowledge-auditor","status":"WARN","score":0.0,"input_snapshot":"先化简,再求值: a2−4 ÷ _{a−2}− _{a2}_{+a}, 然后从0,1,2,3中选一个合适的a值代入求解． a2+4a+4 a2+2a 1","result_json":"{\"picks\": [], \"tree_code\": \"KT_JUNIOR_MATH_STANDARD\", \"candidates\": 0, \"classifier_version\": null}","created_at":"2026-09-25T00:00:00"},{"id":418731,"import_question_id":21228,"audit_type":"VISION","auditor_name":"vision-auditor","status":"PASS","score":0.95,"input_snapshot":"题干：\n先化简,再求值: a2−4 ÷ _{a−2}− _{a2}_{+a}, 然后从0,1,2,3中选一个合适的a值代入求解． a2+4a+4 a2+2a 1\n答案：\n\n解析：\n","result_json":"{\"ok\": true, \"hard\": false, \"issues\": [], \"confidence\": 0.95, \"suggestions\": [\"题干中的表达式排版可以优化，例如将分式写得更清晰，避免下标误用（如 _{a−2} 应表示为 \\\\frac{1}{a-2} 或类似形式）。\", \"建议在‘代入求解’后明确说明所选 a 值的合理性（如排除使分母为零的值），以增强严谨性。\"]}","created_at":"2026-09-25T00:00:20"}]}