diff --git a/public/react/src/modules/courses/exercise/new/SingleDisplay.js b/public/react/src/modules/courses/exercise/new/SingleDisplay.js
index 453cce229..4018fcbbe 100644
--- a/public/react/src/modules/courses/exercise/new/SingleDisplay.js
+++ b/public/react/src/modules/courses/exercise/new/SingleDisplay.js
@@ -54,7 +54,7 @@ class SingleDisplay extends Component{
   }
   render() {
     let { question_title, question_score, question_type, question_choices, standard_answer,
-        question_id, question_number, index, displayCount
+        question_id, question_number, index, displayCount, showActionButton
      } = this.props;
     
     // const { getFieldDecorator } = this.props.form;
@@ -70,6 +70,9 @@ class SingleDisplay extends Component{
     // const answerTagArray = standard_answer.map((item, index) => { return item == true ? tagArray[index] : -1 }).filter(item => item != -1);
     let length = 5;
     const qName = qNameArray[question_type]
+
+    const isPreviewPage = showActionButton == false
+   
     return(
         <div className="bor-bottom-greyE padding20-30 singleDisplay" id={qNumber} _id={question_id}>
             <style>{`
@@ -89,20 +92,24 @@ class SingleDisplay extends Component{
             {/* 单选 or 多选 */}
             <div className="options">
                 { question_choices.map((item, optionIndex) => {
+                  let prefix = ''
+                  if (!isPreviewPage) {
+                    prefix = `${tagArray[optionIndex]}.`
+                  }
                   if (question_type == 0) { // 单选
                     return (
                         <div className="mb10 clearfix" key={optionIndex}>
-                            <Radio disabled className="fl lineh-20" checked={item.standard_boolean}></Radio>
+                            <Radio disabled className="fl lineh-20" checked={item.standard_boolean}>{prefix}</Radio>
                             <span style={{ display: 'inline-block'}} className="markdown-body fl"
-                                    dangerouslySetInnerHTML={{__html: markdownToHTML(item.choice_text)}}></span>
+                                    dangerouslySetInnerHTML={{__html:  markdownToHTML(item.choice_text)}}></span>
                         </div>)
                   } else {
 
                     return (
                         <div className="mb10 clearfix" key={optionIndex}>
-                            <Checkbox  disabled className="fl lineh-20" checked={item.standard_boolean}></Checkbox>
+                            <Checkbox  disabled className="fl lineh-20" checked={item.standard_boolean}>{prefix}</Checkbox>
                             <span style={{ display: 'inline-block'}} className="markdown-body fl"
-                                    dangerouslySetInnerHTML={{__html: markdownToHTML(item.choice_text)}}></span>
+                                    dangerouslySetInnerHTML={{__html:  markdownToHTML(item.choice_text)}}></span>
                         </div>)
                   }
                 })}