book.json

{
   "introduction": {
        "path": "README.md",
        "title": "介绍" },
    "plugins": ["quiz","mcqx","fbqx","duoshuo","-lunr", "-search", "search-pro"],

    "pluginsConfig": {
        "quiz": {
            "labels": {
                "check"             : "Check my answers",
                "showExplanation"   : "Explain", 
                "showCorrect"       : "Show all",   
                "explanationHeader" : "Explanation"
            },
            "text": {
                "noChosen"    : "Choose at least one answer",  
                "incomplete"  : "Some correct answers are missing" 
            },
            "buttons": {
                "showCorrect"       : true, 
                "showExplanation"   : true 
            }
        }, 
        "duoshuo": {
            "short_name": "mytest",
            "theme": "default"
        }
    }
}