{"ok":true,"question":{"id":21100,"question_uuid":"42e57c14-9f6d-4fe6-8d38-d3954bb03ab2","job_id":4,"source_file":"A中考/2026江苏中考期末数学试卷+答案830.pdf","source_page_start":6,"source_page_end":6,"source_bbox":"[30.0, 465.92, 557.04, 796.15]","subject_code":"math","grade_level":"JUNIOR","tree_code":"KT_JUNIOR_MATH_STANDARD","question_type":"comprehensive","canonical_json":"{\"year\": null, \"blocks\": [{\"text\": \"如图,AB为⊙O的直径, 过圆上一点D作⊙O的切线CD交BA的延长线于点C, 过点O作OE ∥ AD交CD于点E, 连接BE. 2026-06-22\", \"type\": \"text\"}, {\"kind\": \"embedded_image\", \"type\": \"figure\", \"width\": 708, \"height\": 675, \"sha256\": \"a0359e8047144f8be2998eb9c002c7b773e9f01e5a9a9835c0275a3514a9db1b\", \"caption\": \"\", \"asset_key\": \"math/2026/09/16de2e24-a616-456b-83c5-3364ab6bd928/42e57c14-9f6d-4fe6-8d38-d3954bb03ab2/a0359e804714.png\", \"public_url\": \"http://tikupdfpng.mtwlkj.net:5129/qbank/math/2026/09/16de2e24-a616-456b-83c5-3364ab6bd928/42e57c14-9f6d-4fe6-8d38-d3954bb03ab2/a0359e804714.png\", \"source_bbox\": [30.0, 533.3200073242188, 171.69000244140625, 675.52001953125], \"source_page\": 6}, {\"type\": \"subquestion\", \"index\": 1, \"blocks\": [{\"text\": \"证明: 直线BE与⊙O相切;\", \"type\": \"text\"}]}, {\"type\": \"subquestion\", \"index\": 2, \"blocks\": [{\"text\": \"若OA = 3, CD = 4, 求DE的长．\", \"type\": \"text\"}]}], \"source\": {\"bbox\": [30.0, 465.92, 557.04, 796.15], \"file\": \"A中考/2026江苏中考期末数学试卷+答案830.pdf\", \"regions\": [{\"bbox\": [30.0, 465.92, 557.04, 796.15], \"page\": 6}], \"section\": \"match\", \"page_end\": 6, \"page_start\": 6, \"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\": \"2\", \"subject_code\": \"math\", \"question_type\": \"comprehensive\", \"content_sha256\": \"6b634421b7f41f60c4ca063e21ea9de50f88e7b7f8ddd45a5058cdb918abf3b8\"}","body_html":"<div>如图,AB为⊙O的直径, 过圆上一点D作⊙O的切线CD交BA的延长线于点C, 过点O作OE ∥ AD交CD于点E, 连接BE. 2026-06-22<img class=\"question-figure\" src=\"http://tikupdfpng.mtwlkj.net:5129/qbank/math/2026/09/16de2e24-a616-456b-83c5-3364ab6bd928/42e57c14-9f6d-4fe6-8d38-d3954bb03ab2/a0359e804714.png\" style=\"width:188.9px!important;max-width:100%;height:auto\" alt=\"\" title=\"点击查看原图\"><br>（1）证明: 直线BE与⊙O相切;<br>（2）若OA = 3, CD = 4, 求DE的长．</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. 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