{
  "topic": "example-topic",
  "type": "multiple_choice",
  "schema_version": "1.0.0",
  "generated": "2026-01-01T00:00:00Z",
  "questions": [
    {
      "id": "dom-sub-top-mc-001",
      "type": "multiple_choice",
      "difficulty": 3,
      "tags": ["example", "template"],
      "question": "以下哪些选项是正确的？（多选）",
      "options": {
        "A": "正确选项一",
        "B": "错误选项",
        "C": "正确选项二",
        "D": "错误选项",
        "E": "正确选项三"
      },
      "answer": ["A", "C", "E"],
      "explanation": "A、C、E 是正确答案。B 和 D 是错误选项，需要考生具备全面的知识理解才能准确作答。",
      "source": null,
      "related": []
    }
  ]
}