{"ok":true,"question":{"id":21121,"question_uuid":"752296cd-6346-462f-9a28-992814237ce0","job_id":4,"source_file":"A中考/2026江苏中考期末数学试卷+答案835.pdf","source_page_start":1,"source_page_end":1,"source_bbox":"[45.0, 273.54, 517.96, 331.99]","subject_code":"math","grade_level":"SENIOR","tree_code":"KT_SENIOR_MATH_STANDARD","question_type":"comprehensive","canonical_json":"{\"year\": null, \"blocks\": [{\"text\": \"如图,△ABC内接于⊙O, AB为⊙O的直径, 点D在AB的延长线上, 连接CD, ∠BCD = ∠A, 过点B作BE ⊥AD, 交CD于点E．\", \"type\": \"text\"}, {\"kind\": \"embedded_image\", \"type\": \"figure\", \"width\": 708, \"height\": 337, \"sha256\": \"2d565f8b218f3ae24561abe3a5d81ff7a6aeaaf5e1474465e840a5205eff9d3a\", \"caption\": \"\", \"asset_key\": \"math/2026/09/16de2e24-a616-456b-83c5-3364ab6bd928/752296cd-6346-462f-9a28-992814237ce0/2d565f8b218f.png\", \"public_url\": \"http://tikupdfpng.mtwlkj.net:5129/qbank/math/2026/09/16de2e24-a616-456b-83c5-3364ab6bd928/752296cd-6346-462f-9a28-992814237ce0/2d565f8b218f.png\", \"source_bbox\": [45.0, 332.7099914550781, 186.6699981689453, 400.6099853515625], \"source_page\": 1}, {\"type\": \"subquestion\", \"index\": 1, \"blocks\": [{\"text\": \"求证: CD是⊙O的切线;\", \"type\": \"text\"}]}, {\"type\": \"subquestion\", \"index\": 2, \"blocks\": [{\"text\": \"若点\", \"type\": \"text\"}, {\"type\": \"math_inline\", \"latex\": \"B\"}, {\"text\": \"是\", \"type\": \"text\"}, {\"type\": \"math_inline\", \"latex\": \"AD\"}, {\"text\": \"的中点，且\", \"type\": \"text\"}, {\"type\": \"math_inline\", \"latex\": \"BE = 3\"}, {\"text\": \"，求\", \"type\": \"text\"}, {\"type\": \"math_inline\", \"latex\": \"\\\\odot O\"}, {\"text\": \"的半径.\", \"type\": \"text\"}]}], \"source\": {\"bbox\": [45.0, 273.54, 517.96, 331.99], \"file\": \"A中考/2026江苏中考期末数学试卷+答案835.pdf\", \"regions\": [{\"bbox\": [45.0, 273.54, 517.96, 331.99], \"page\": 1}], \"section\": \"generic\", \"page_end\": 1, \"page_start\": 1, \"section_label\": \"\", \"answer_regions\": []}, \"version\": 1, \"grade_level\": \"SENIOR\", \"number_label\": \"2\", \"subject_code\": \"math\", \"question_type\": \"comprehensive\", \"content_sha256\": \"40b0e7089460752ebb790f2ce9e2658ae5544bca0f625ace58661699ffffebc4\"}","body_html":"<div>如图,△ABC内接于⊙O, AB为⊙O的直径, 点D在AB的延长线上, 连接CD, ∠BCD = ∠A, 过点B作BE ⊥AD, 交CD于点E．<img class=\"question-figure\" src=\"http://tikupdfpng.mtwlkj.net:5129/qbank/math/2026/09/16de2e24-a616-456b-83c5-3364ab6bd928/752296cd-6346-462f-9a28-992814237ce0/2d565f8b218f.png\" style=\"width:188.9px!important;max-width:100%;height:auto\" alt=\"\" title=\"点击查看原图\"><br>（1）求证: CD是⊙O的切线;<br>（2）若点\\(B\\)是\\(AD\\)的中点，且\\(BE = 3\\)，求\\(\\odot O\\)的半径.</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=8091): Read timed out. 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