{"ok":true,"question":{"id":21874,"question_uuid":"02503051-57e1-43e6-8b25-0c1ee2bb8406","job_id":3,"source_file":"人教版/七下/2026江苏七年级期末数学试卷+答案610.pdf","source_page_start":3,"source_page_end":3,"source_bbox":"[30.0, 264.06, 285.17, 358.51]","subject_code":"math","grade_level":"JUNIOR","tree_code":"KT_JUNIOR_MATH_STANDARD","question_type":"choice","canonical_json":"{\"year\": null, \"blocks\": [{\"text\": \"点A(3 −a,\", \"type\": \"text\"}, {\"type\": \"math_inline\", \"latex\": \"a^{2}\"}, {\"text\": \"−1)在x轴上，则a的值为( )\", \"type\": \"text\"}, {\"type\": \"math_inline\", \"latex\": \"\\\\frac{(A)3}{(B)1}\"}, {\"type\": \"option\", \"label\": \"C\", \"blocks\": [{\"text\": \"0\", \"type\": \"text\"}], \"source_bbox\": [30.0, 329.94, 72.62, 342.91], \"source_page\": 3}, {\"type\": \"option\", \"label\": \"D\", \"blocks\": [{\"text\": \"±1\", \"type\": \"text\"}], \"source_bbox\": [30.0, 345.54, 81.62, 358.51], \"source_page\": 3}], \"source\": {\"bbox\": [30.0, 264.06, 285.17, 358.51], \"file\": \"人教版/七下/2026江苏七年级期末数学试卷+答案610.pdf\", \"regions\": [{\"bbox\": [30.0, 264.06, 285.17, 358.51], \"page\": 3}], \"section\": \"match\", \"page_end\": 3, \"page_start\": 3, \"section_label\": \"智适化匹配练习   ★ 交互式系统学习\", \"answer_regions\": [], \"answer_original\": \"\", \"solution_original\": \"\"}, \"version\": 1, \"grade_level\": \"JUNIOR\", \"number_label\": \"2\", \"subject_code\": \"math\", \"question_type\": \"choice\", \"content_sha256\": \"52b7030ea7f4981e0858349ca693335a0f9e3b1ab1ed99f44454cf02d249ce93\"}","body_html":"<div>点A(3 −a,\\(a^{2}\\)−1)在x轴上，则a的值为( )\\(\\frac{(A)3}{(B)1}\\)<br>C. 0<br>D. ±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":0.95,"error_message":"QA failed: COHERENCE,ANSWER","published_question_id":null,"content_sha256":"52b7030ea7f4981e0858349ca693335a0f9e3b1ab1ed99f44454cf02d249ce93","created_at":"2026-09-25T04:18:03","updated_at":"2026-09-25T04:28:32","answer_missing":true,"formula_fallback":false,"_number":"2","_section":"match","_section_label":"智适化匹配练习   ★ 交互式系统学习"},"assets":[],"knowledge":[],"audits":[{"id":433049,"import_question_id":21874,"audit_type":"STRUCTURE","auditor_name":"structure-rule","status":"PASS","score":0.9,"input_snapshot":"点A(3 −a, a^{2} −1)在x轴上，则a的值为( ) \\frac{(A)3}{(B)1} C. 0 D. ±1","result_json":"{\"ok\": true, \"rule\": \"clean-override\", \"issues\": [], \"confidence\": 0.9}","created_at":"2026-09-25T04:23:44"},{"id":433050,"import_question_id":21874,"audit_type":"FORMULA","auditor_name":"formula-auditor","status":"PASS","score":1.0,"input_snapshot":"a^{2}; \\frac{(A)3}{(B)1}","result_json":"{\"risky\": 2, \"issues\": [], \"checked\": 2, \"invalid\": 0, \"visual_check\": \"delegated_to_question_vision\", \"invalid_details\": [], \"visually_verified\": 0}","created_at":"2026-09-25T04:23:44"},{"id":433051,"import_question_id":21874,"audit_type":"KNOWLEDGE","auditor_name":"knowledge-auditor","status":"WARN","score":0.0,"input_snapshot":"点A(3 −a, a^{2} −1)在x轴上，则a的值为( ) \\frac{(A)3}{(B)1} C. 0 D. ±1","result_json":"{\"picks\": [], \"tree_code\": \"KT_JUNIOR_MATH_STANDARD\", \"candidates\": 0, \"classifier_version\": null}","created_at":"2026-09-25T04:23:44"},{"id":433072,"import_question_id":21874,"audit_type":"SOLVER","auditor_name":"blind-solver","status":"PASS","score":1.0,"input_snapshot":"点A(3 −a, a^{2} −1)在x轴上，则a的值为( ) \\frac{(A)3}{(B)1} C. 0 D. ±1","result_json":"{\"basis\": \"点A在x轴上，其纵坐标必须为0。因此，a^2 - 1 = 0，解得a = ±1。同时，横坐标3 - a必须不等于0（因为若横坐标为0，则点A为原点，但原点也在x轴上，需验证是否满足条件）。当a=1时，横坐标为2，纵坐标为0，满足条件；当a=-1时，横坐标为4，纵坐标为0，也满足条件。因此，a的值为±1，对应选项D。\", \"answer\": \"A\", \"confidence\": 1.0, \"handout_chars\": 0}","created_at":"2026-09-25T04:24:16"},{"id":433073,"import_question_id":21874,"audit_type":"CRITIC","auditor_name":"critic","status":"PASS","score":1.0,"input_snapshot":"来源答案: || 盲解:A","result_json":"{\"ok\": true, \"issues\": [], \"merged\": true, \"confidence\": 1.0}","created_at":"2026-09-25T04:24:16"},{"id":433078,"import_question_id":21874,"audit_type":"VISION","auditor_name":"vision-auditor","status":"PASS","score":1.0,"input_snapshot":"题干：\n点A(3 −a,\\(a^{2}\\)−1)在x轴上，则a的值为( )\\(\\frac{(A)3}{(B)1}\\) C. 0 D. ±1\n答案：\n\n解析：\n","result_json":"{\"ok\": true, \"hard\": false, \"issues\": [], \"confidence\": 1.0, \"suggestions\": [\"题干中选项A和B的排版使用了\\\\(\\\\frac{(A)3}{(B)1}\\\\)，这在LaTeX中会产生分数形式，建议改为标准的选项排列方式，如：(A) 3 (B) 1，以提升可读性。\"]}","created_at":"2026-09-25T04:24:21"},{"id":433079,"import_question_id":21874,"audit_type":"SYMBOLIC","auditor_name":"symbolic-auditor","status":"WARN","score":0.5,"input_snapshot":"答案: || 盲解:A","result_json":"{\"checks\": [], \"detail\": {\"reason\": \"未提取到来源答案\"}, \"status\": \"WARN\", \"applicable\": true}","created_at":"2026-09-25T04:24:21"},{"id":433097,"import_question_id":21874,"audit_type":"COHERENCE","auditor_name":"coherence-auditor","status":"FAIL","score":0.9,"input_snapshot":"答案: || 解析:","result_json":"{\"ok\": false, \"which\": [\"solution\", \"answer\"], \"issues\": [\"解析为空，缺少必要的推导过程；答案未给出，仅标注‘盲解答案为 A’，不符合规范。\"], \"confidence\": 0.9, \"equation_checks\": []}","created_at":"2026-09-25T04:25:00"},{"id":433098,"import_question_id":21874,"audit_type":"QUALITY_GATE","auditor_name":"quality-gate","status":"FAIL","score":0.95,"input_snapshot":"","result_json":"{\"warnings\": [], \"graded_gate\": true, \"hard_failed\": [\"COHERENCE\", \"ANSWER\"]}","created_at":"2026-09-25T04:25:00"},{"id":433149,"import_question_id":21874,"audit_type":"SOLVER","auditor_name":"blind-solver","status":"PASS","score":0.95,"input_snapshot":"点A(3 −a, a^{2} −1)在x轴上，则a的值为( ) \\frac{(A)3}{(B)1} C. 0 D. ±1","result_json":"{\"basis\": \"点A在x轴上，则其纵坐标为0，即a² - 1 = 0，解得a = ±1。此时横坐标为3 - a，当a = 1时，横坐标为2；当a = -1时，横坐标为4，均有效。但选项D为±1，而题目要求单选，需进一步验证：若a = -1，则点A为(4, 0)，符合；若a = 1，则点A为(2, 0)，也符合。然而，原题选项中D是±1，但根据常规考题设计，可能隐含唯一解。重新审视：题目未限制横坐标符号，故两个值都满足‘在x轴上’的条件。但选项设置中D为±1，应为正确答案。然而，参考来源答案为A（即a=3），这与我们的推导矛盾。检查：若a=3，则纵坐标为9-1=8≠0，不在x轴上。因此来源答案A错误。正确应为D。但用户提供的‘来源答案’写的是A，可能是笔误或排版错误。根据数学事实，正确答案是D（±1）。\", \"answer\": \"A\", \"confidence\": 0.95, \"handout_chars\": 0}","created_at":"2026-09-25T04:27:16"},{"id":433150,"import_question_id":21874,"audit_type":"CRITIC","auditor_name":"critic","status":"FAIL","score":0.9,"input_snapshot":"来源答案:A || 盲解:A","result_json":"{\"ok\": false, \"issues\": [\"来源答案A（a=3）代入后纵坐标为8，不满足在x轴上的条件，与题干矛盾\"], \"merged\": true, \"confidence\": 0.9}","created_at":"2026-09-25T04:27:16"},{"id":433154,"import_question_id":21874,"audit_type":"COHERENCE","auditor_name":"coherence-auditor","status":"PASS","score":1.0,"input_snapshot":"答案:A || 解析:点A(3 − a,\\(a^{2}\\)− 1)在x轴上，则其纵坐标为0，即\\(a^{2}\\)− 1 = 0。解得a = ±1。当a = 1时，点A坐标为(2, 0)；当a = −1时，点A坐标为(4, 0)，均满足条件。因此a的值为±1，对应选项D。但题目选项中A为3，B为1，C为0，D为±1，故正确答案为D。","result_json":"{\"ok\": true, \"which\": [], \"issues\": [], \"confidence\": 1.0, \"equation_checks\": [{\"valid\": true, \"reason\": \"点A在x轴上，纵坐标为0，推导正确。\", \"equation\": \"a^2 - 1 = 0\"}, {\"valid\": true, \"reason\": \"由a^2 - 1 = 0解得，正确。\", \"equation\": \"a = ±1\"}, {\"valid\": true, \"reason\": \"代入a=1，横坐标3-1=2，纵坐标0，正确。\", \"equation\": \"当a=1时，点A坐标为(2, 0)\"}, {\"valid\": true, \"reason\": \"代入a=-1，横坐标3-(-1)=4，纵坐标0，正确。\", \"equation\": \"当a=-1时，点A坐标为(4, 0)\"}]}","created_at":"2026-09-25T04:28:32"},{"id":433155,"import_question_id":21874,"audit_type":"SYMBOLIC","auditor_name":"symbolic-auditor","status":"PASS","score":1.0,"input_snapshot":"答案:A || 盲解:A","result_json":"{\"checks\": [], \"detail\": {\"reason\": \"盲解与来源答案一致\"}, \"status\": \"PASS\", \"applicable\": true}","created_at":"2026-09-25T04:28:32"},{"id":433156,"import_question_id":21874,"audit_type":"AUTO_REPAIR_ATTEMPT","auditor_name":"answer-repair","status":"FAIL","score":1.0,"input_snapshot":null,"result_json":"{\"critic\": false, \"symbolic\": true, \"coherence\": true, \"consensus\": \"two_solvers+symbolic+critic+coherence\", \"confidence\": 1.0, \"verifier_base\": \"http://127.0.0.1:8091/v1\", \"verifier_confidence\": 0.95, \"critic_explicit_pass\": false, \"symbolic_literal_warn\": false, \"symbolic_explicit_pass\": true, \"coherence_explicit_pass\": true}","created_at":"2026-09-25T04:28:32"}]}