fix: 修复作业多选题

src/components/question/Question.vue

@@ -56,37 +56,7 @@ const isCompositeStem = computed(() => {
   return props.data.stem.includes('qml-sq') && props.data.stem.includes('qml-op')
 })
 
-function getAnswerCountFromAnswerHtml(answerHtml: unknown) {
-  if (!answerHtml) return 0
-  if (Array.isArray(answerHtml)) return answerHtml.filter(Boolean).length
-
-  if (typeof answerHtml === 'string') {
-    const raw = answerHtml.trim()
-    if (!raw) return 0
-
-    try {
-      const parsed = JSON.parse(raw)
-      if (Array.isArray(parsed)) return parsed.filter(Boolean).length
-    } catch {
-      /* ignore */
-    }
-
-    const plainText = raw
-      .replace(/<[^>]*>/g, '')
-      .replace(/&nbsp;/gi, ' ')
-      .trim()
-    if (!plainText) return 0
-    return plainText.split(/[，,\s]+/).filter(Boolean).length
-  }
-
-  return 0
-}
-
-const isSingleChoiceByAnswerHtml = computed(() => {
-  return props.data?.stemType === 2 && getAnswerCountFromAnswerHtml(props.data?.answerHtml) === 1
-})
-
-// 从 answerHtml 中提取选择题答案字母 (如 "A" 或 "A,B,C")
+// 从 answerHtml 中提取选择题答案字母 (如 "A"、"BCD" 或 "A,B,C")
 function extractChoiceLettersFromAnswerHtml(answerHtml: unknown): string {
   if (!answerHtml) return ''
   if (Array.isArray(answerHtml)) {
@@ -125,6 +95,40 @@ function extractChoiceLettersFromAnswerHtml(answerHtml: unknown): string {
   return ''
 }
 
+// 以 answerHtml 为准：如 "BCD" 为 3 个答案，"A" 或 "A,B" 按逗号/字母解析
+function getAnswerCountFromAnswerHtml(answerHtml: unknown) {
+  const normalized = extractChoiceLettersFromAnswerHtml(answerHtml)
+  if (normalized) return normalized.split(',').filter(Boolean).length
+
+  if (!answerHtml) return 0
+  if (Array.isArray(answerHtml)) return answerHtml.filter(Boolean).length
+
+  if (typeof answerHtml === 'string') {
+    const raw = answerHtml.trim()
+    if (!raw) return 0
+
+    try {
+      const parsed = JSON.parse(raw)
+      if (Array.isArray(parsed)) return parsed.filter(Boolean).length
+    } catch {
+      /* ignore */
+    }
+
+    const plainText = raw
+      .replace(/<[^>]*>/g, '')
+      .replace(/&nbsp;/gi, ' ')
+      .trim()
+    if (!plainText) return 0
+    return plainText.split(/[，,\s]+/).filter(Boolean).length
+  }
+
+  return 0
+}
+
+const isSingleChoiceByAnswerHtml = computed(() => {
+  return props.data?.stemType === 2 && getAnswerCountFromAnswerHtml(props.data?.answerHtml) === 1
+})
+
 // 选择题（单选/多选）的正确答案，优先使用 answerHtml
 const choiceAnswer = computed(() => {
   const stemType = props.data?.stemType

src/components/question/answer/MultipleChoice.vue

@@ -65,12 +65,12 @@ const content = computed(() => {
           'multiple-choice-item': true,
           pointer: true,
           active: selectChoice.includes(choiceEnum[idx]),
-          success:
+          success: isDeadline && reportFlag && answerArray?.includes(choiceEnum[idx]),
+          fail:
             isDeadline &&
             reportFlag &&
-            answerArray?.includes(choiceEnum[idx]) &&
-            stuAnswerArray?.includes(choiceEnum[idx]),
-          fail: isDeadline && reportFlag && stuAnswerArray?.includes(choiceEnum[idx]),
+            stuAnswerArray?.includes(choiceEnum[idx]) &&
+            !answerArray?.includes(choiceEnum[idx]),
         }"
         @click="handleSelect(idx)"
       >