{"ok":true,"question":{"id":21046,"question_uuid":"59368b21-4a41-4a4e-97e1-adacfc5a4119","job_id":3,"source_file":"人教版/七下/2026江苏七年级期末数学试卷+答案385.pdf","source_page_start":4,"source_page_end":4,"source_bbox":"[30.0, 381.97, 203.69, 403.58]","subject_code":"math","grade_level":"SENIOR","tree_code":"KT_SENIOR_MATH_STANDARD","question_type":"fill_blank","canonical_json":"{\"year\": null, \"blocks\": [{\"text\": \"计算−√_{64}的立方根是____．1\", \"type\": \"text\"}], \"source\": {\"bbox\": [30.0, 381.97, 203.69, 403.58], \"file\": \"人教版/七下/2026江苏七年级期末数学试卷+答案385.pdf\", \"regions\": [{\"bbox\": [30.0, 381.97, 203.69, 403.58], \"page\": 4}], \"section\": \"match\", \"page_end\": 4, \"page_start\": 4, \"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\": \"SENIOR\", \"number_label\": \"5\", \"subject_code\": \"math\", \"question_type\": \"fill_blank\", \"content_sha256\": 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