HTML文件中删除选择题的错误选项

问题遇到的现象和发生背景
问题相关代码，请勿粘贴截图
运行结果及报错内容
我的解答思路和尝试过的方法
我想要达到的结果

<div>
<span style="background-image:url('../../App_Themes/Default/images/icon/correct.gif')">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span>1. <div>&nbsp;<span style="font-size: 12pt">一个完整的计算机系统应该包括(&nbsp;)。</span></div><br><span disabled="disabled"><input disabled="disabled" id="ctl00_CPHMain_ctl05" name="ctl00$CPHMain$ctl05" type="radio" value="ctl05"><label for="ctl00_CPHMain_ctl05">A&nbsp;&nbsp;</label></span><div style="line-height: 150%; text-indent: 21.25pt"><span style="font-size: 12pt">系统软件和应用软件</span></div><br><span disabled="disabled"><input disabled="disabled" id="ctl00_CPHMain_ctl07" name="ctl00$CPHMain$ctl07" type="radio" value="ctl07"><label for="ctl00_CPHMain_ctl07">B&nbsp;&nbsp;</label></span><div style="line-height: 150%; text-indent: 21.25pt"><span style="font-size: 12pt">计算机及其外部设备</span></div><br><span disabled="disabled"><input checked="checked" disabled="disabled" id="ctl00_CPHMain_ctl09" name="ctl00$CPHMain$ctl09" type="radio" value="ctl09"><label for="ctl00_CPHMain_ctl09">C&nbsp;&nbsp;</label></span><div><span style="font-size: 12pt">硬件系统和软件系统</span></div><br><span disabled="disabled"><input disabled="disabled" id="ctl00_CPHMain_ctl11" name="ctl00$CPHMain$ctl11" type="radio" value="ctl11"><label for="ctl00_CPHMain_ctl11">D&nbsp;&nbsp;</label></span><div><span style="font-size: 12pt">系统硬件和系统软件</span></div><br><span style="color:Red">参考答案：C</span>
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<!DOCTYPE html>
<html>

    <head>
        <meta charset="UTF-8">
        <link rel="stylesheet" type="text/css" href="css1.css" />
        <title></title>

    <body>

        <div>
            <span style="background-image:url('../../App_Themes/Default/images/icon/correct.gif')">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span>1.
            <div>
                <span style="font-size: 12pt">一个完整的计算机系统应该包括(&nbsp;)。</span>
            </div>
            <div disabled="disabled">
                <input disabled="disabled" id="ctl00_CPHMain_ctl05" name="ctl00$CPHMain$ctl05" type="radio" value="ctl05">
                <label for="ctl00_CPHMain_ctl05">A&nbsp;&nbsp;</label>
                <span style="font-size: 12pt">系统软件和应用软件</span>
            </div>
            <div disabled="disabled">
                <input disabled="disabled" id="ctl00_CPHMain_ctl07" name="ctl00$CPHMain$ctl07" type="radio" value="ctl07">
                <label for="ctl00_CPHMain_ctl07">B&nbsp;&nbsp;</label>
                <span style="font-size: 12pt">计算机及其外部设备</span>
            </div>
            <div disabled="disabled">
                <input checked="checked" disabled="disabled" id="ctl00_CPHMain_ctl09" name="ctl00$CPHMain$ctl09" type="radio" value="ctl09">
                <label for="ctl00_CPHMain_ctl09">C&nbsp;&nbsp;</label>
                <span style="font-size: 12pt">硬件系统和软件系统</span>
            </div>
            <div disabled="disabled">
                <input disabled="disabled" id="ctl00_CPHMain_ctl11" name="ctl00$CPHMain$ctl11" type="radio" value="ctl11">
                <label for="ctl00_CPHMain_ctl11">D&nbsp;&nbsp;</label>
                <span style="font-size: 12pt">系统硬件和系统软件</span>
            </div>
            <div style="color:Red">参考答案：C</div>
        </div>
        <script>
            window.onload = function() {
                var radioDom = document.getElementsByTagName('input')
                for(var i = 0; i < radioDom.length; i++) {
                    console.log(radioDom[i].checked)
                    if(!radioDom[i].checked) {
                        radioDom[i].parentNode.style.display = 'none'
                    }
                }
                console.log(radioDom)
            }
        </script>
    </body>

</html>

你是说只留 正确答案 。
那你需要 隐藏 错误的， 首先 你这个 选项列表 要是 动态渲染 的 。然后 判断 一下 给 不对的答案加上 display:none .或者干脆不渲染