diff --git a/app/views/exercise/_edit_MC.html.erb b/app/views/exercise/_edit_MC.html.erb
index fee35824b..f4ececf8f 100644
--- a/app/views/exercise/_edit_MC.html.erb
+++ b/app/views/exercise/_edit_MC.html.erb
@@ -8,7 +8,6 @@
             $("#poll_question_standard_answer_<%=exercise_question.id %>").val("<%= convert_to_char(exercise_question.exercise_standard_answers.first.exercise_choice_id.to_s)%>")
             $("#poll_answers_<%=exercise_question.id%>").html("<% exercise_question.exercise_choices.reorder("choice_position").each_with_index do |exercise_choice,index| %>" +
                     "<li class='ur_item'>" +
-                    "<input type='radio' style='width: 15px;' />"+
                     "<label>选项<%=convert_to_char (index+1).to_s %><span class='ur_index'></span>：&nbsp;&nbsp;&nbsp;</label>" +
                     "<input maxlength='200' type='text' name='question_answer[<%=exercise_choice.id %>]' placeholder='输入选项内容' value='<%=exercise_choice.choice_text %>'/>" +
                     "<a class='icon_add' title='向下插入选项' onclick='add_single_answer($(this));'></a>" +
@@ -30,14 +29,12 @@
           <li class="ur_item">
             <label>分数<span class="ur_index"></span>：&nbsp;&nbsp;&nbsp;</label>
             <input type="text" id="poll_question_score_<%=exercise_question.id %>" name="question_score" style="width:40px; text-align:center; padding-left:0px;" value="<%= exercise_question.question_score %>">分
-            <span class="ml10">标准答案：请选择</span>
           </li>
           <div class="cl"></div>
           <div id="poll_answers_<%=exercise_question.id%>">
               <% exercise_question.exercise_choices.reorder("choice_position").each_with_index do |exercise_choice,index| %>
                   <li class="ur_item">
                     <label>选项<%=convert_to_char (index+1).to_s %><span class="ur_index"></span>：&nbsp;&nbsp;&nbsp;</label>
-                    <input type="radio" style="width: 15px;" />
                     <input maxlength="200" type='text' name='question_answer[<%=exercise_choice.id %>]' placeholder='输入选项内容' value="<%=exercise_choice.choice_text %>">
                     <a class="icon_add" title="向下插入选项" onclick="add_single_answer($(this));"></a>
                     <a class="icon_remove" title="删除" onclick="remove_single_answer($(this))"></a>
@@ -45,6 +42,10 @@
                   <div class="cl"></div>
               <% end %>
           </div>
+          <li class="ur_item">
+            <label>标准答案<span class="ur_index"></span>：&nbsp;&nbsp;&nbsp;</label>
+            <input id="poll_question_standard_answer_<%=exercise_question.id %>" name="exercise_choice" placeholder="若标准答案为A，在此输入A即可" type="text" value="<%=convert_to_char(exercise_question.exercise_standard_answers.first.exercise_choice_id.to_s) %>">
+          </li>
           <div class="cl"></div>
         </ul>
       </div>
diff --git a/app/views/exercise/_edit_MCQ.html.erb b/app/views/exercise/_edit_MCQ.html.erb
index 66bbe8a6f..18ae79d1c 100644
--- a/app/views/exercise/_edit_MCQ.html.erb
+++ b/app/views/exercise/_edit_MCQ.html.erb
@@ -29,14 +29,12 @@
           <li class="ur_item">
             <label>分数<span class="ur_index"></span>：&nbsp;&nbsp;&nbsp;</label>
             <input type="text" id="poll_question_score_<%=exercise_question.id %>" name="question_score" style="width:40px; text-align:center; padding-left:0px;" value="<%= exercise_question.question_score %>">分
-            <span class="ml10">标准答案：请选择</span>
           </li>
           <div class="cl"></div>
           <div id="poll_answers_<%=exercise_question.id%>">
             <% exercise_question.exercise_choices.reorder("choice_position").each_with_index do |exercise_choice,index| %>
                 <li class="ur_item">
                   <label>选项<%=convert_to_char (index+1).to_s %><span class="ur_index"></span>：&nbsp;&nbsp;&nbsp;</label>
-                  <input type="checkbox" style="width: 15px;" />
                   <input maxlength="200" type='text' name='question_answer[<%= exercise_choice.id %>]' placeholder='输入选项内容' value="<%=exercise_choice.choice_text %>">
                   <a class="icon_add" title="向下插入选项" onclick="add_single_answer($(this));"></a>
                   <a class="icon_remove" title="删除" onclick="remove_single_answer($(this))"></a>
@@ -44,6 +42,11 @@
                 <div class="cl"></div>
             <% end %>
           </div>
+          <li class="ur_item">
+            <label>标准答案<span class="ur_index"></span>：&nbsp;&nbsp;&nbsp;</label>
+            <input id="poll_question_standard_answer_<%=exercise_question.id %>" name="exercise_choice" placeholder="若标准答案为A,B,C，在答案输入框填入ABC即可" type="text" value="<%=convert_to_char(exercise_question.exercise_standard_answers.first.exercise_choice_id.to_s) %>">
+          </li>
+          <div class="cl"></div>
         </ul>
       </div>
       <div class="ur_editor_footer">
diff --git a/app/views/exercise/_exercise_form.html.erb b/app/views/exercise/_exercise_form.html.erb
index 40e68ad61..8de4dac38 100644
--- a/app/views/exercise/_exercise_form.html.erb
+++ b/app/views/exercise/_exercise_form.html.erb
@@ -162,7 +162,7 @@
     //单选题
     function add_single_answer(doc)
     {
-        doc.parent().after("<li class='ur_item'><label>选项<span class='ur_index'></span>：&nbsp;&nbsp;&nbsp;</label><input type='radio' style='width: 15px;' /><input maxlength='200' type='text' name='question_answer["+new Date().getTime()+"]' placeholder='输入选项内容'/>" +
+        doc.parent().after("<li class='ur_item'><label>选项<span class='ur_index'></span>：&nbsp;&nbsp;&nbsp;</label><input maxlength='200' type='text' name='question_answer["+new Date().getTime()+"]' placeholder='输入选项内容'/>" +
                 "<a class='icon_add' title='向下插入选项' onclick='add_single_answer($(this));'></a><a class='icon_remove'  title='删除' onclick='remove_single_answer($(this))'></a>"+
                 "</li><div class='cl'></div>");
     }
diff --git a/app/views/exercise/_new_MC.html.erb b/app/views/exercise/_new_MC.html.erb
index c0a53b2e9..0d7350570 100644
--- a/app/views/exercise/_new_MC.html.erb
+++ b/app/views/exercise/_new_MC.html.erb
@@ -14,13 +14,11 @@
         <% score = exercise.exercise_questions.where("question_type=1").last.nil? ? "": exercise.exercise_questions.where("question_type=1").last.question_score %>
          <label>分数<span class="ur_index"></span>：&nbsp;&nbsp;&nbsp;</label>
          <input id="question_score" value="<%=score %>" type="text" name="question_score" style="width:40px; text-align:center; padding-left:0px;">分
-         <span class="ml15">标准答案：请选择</span>
       </li>
       <div class="cl"></div>
       <div>
           <li class="ur_item">
             <label>选项A<span class="ur_index"></span>：&nbsp;&nbsp;&nbsp;</label>
-            <input type="radio" style="width: 15px;" />
             <input maxlength="200" type='text' name='question_answer[0]' placeholder='输入选项内容'>
             <a class="icon_add" title="向下插入选项" onclick="add_single_answer($(this));"></a>
             <a class="icon_remove" title="删除" onclick="remove_single_answer($(this))"></a>
@@ -28,7 +26,6 @@
           <div class="cl"></div>
           <li class="ur_item">
             <label>选项B<span class="ur_index"></span>：&nbsp;&nbsp;&nbsp;</label>
-            <input type="radio" style="width: 15px;" />
             <input maxlength="200" type='text' name='question_answer[1]' placeholder='输入选项内容'>
             <a class="icon_add" title="向下插入选项" onclick="add_single_answer($(this));"></a>
             <a class="icon_remove" title="删除" onclick="remove_single_answer($(this))"></a>
@@ -36,7 +33,6 @@
           <div class="cl"></div>
           <li class="ur_item">
             <label>选项C<span class="ur_index"></span>：&nbsp;&nbsp;&nbsp;</label>
-            <input type="radio" style="width: 15px;" />
             <input maxlength="200" type='text' name='question_answer[2]' placeholder='输入选项内容'/>
             <a class="icon_add" title="向下插入选项" onclick="add_single_answer($(this));"></a>
             <a class="icon_remove" title="删除" onclick="remove_single_answer($(this))"></a>
@@ -44,13 +40,17 @@
           <div class="cl"></div>
           <li class="ur_item">
             <label>选项D<span class="ur_index"></span>：&nbsp;&nbsp;&nbsp;</label>
-            <input type="radio" style="width: 15px;" />
             <input maxlength="200" type='text' name='question_answer[3]' placeholder='输入选项内容'/>
             <a class="icon_add" title="向下插入选项" onclick="add_single_answer($(this));"></a>
             <a class="icon_remove" title="删除" onclick="remove_single_answer($(this))"></a>
           </li>
       </div>
       <div class="cl"></div>
+      <li class="ur_item">
+        <label>标准答案<span class="ur_index"></span>：&nbsp;&nbsp;&nbsp;</label>
+        <input id="question_standard_ans" name="exercise_choice" placeholder="若标准答案为A，在此输入A即可" type="text">
+      </li>
+      <div class="cl"></div>
     </ul>
   </div>
   <div class="ur_editor_footer">
diff --git a/app/views/exercise/_new_MCQ.html.erb b/app/views/exercise/_new_MCQ.html.erb
index eaf618c56..3ea198d8f 100644
--- a/app/views/exercise/_new_MCQ.html.erb
+++ b/app/views/exercise/_new_MCQ.html.erb
@@ -14,13 +14,11 @@
         <% score = exercise.exercise_questions.where("question_type=2").last.nil? ? "": exercise.exercise_questions.where("question_type=2").last.question_score %>
         <label>分数<span class="ur_index"></span>：&nbsp;&nbsp;&nbsp;</label>
         <input id="question_score" value="<%=score %>" type="text" name="question_score" style="width:40px; text-align:center; padding-left:0px;">分
-        <span class="ml10">标准答案：请选择</span>
       </li>
       <div class="cl"></div>
       <div>
           <li class="ur_item">
             <label>选项A<span class="ur_index"></span>：&nbsp;&nbsp;&nbsp;</label>
-            <input type="checkbox" style="width: 15px;" />
             <input maxlength="200" type='text' name='question_answer[0]' placeholder='输入选项内容'>
             <a class="icon_add" title="向下插入选项" onclick="add_single_answer($(this));"></a>
             <a class="icon_remove" title="删除" onclick="remove_single_answer($(this))"></a>
@@ -28,7 +26,6 @@
           <div class="cl"></div>
           <li class="ur_item">
             <label>选项B<span class="ur_index"></span>：&nbsp;&nbsp;&nbsp;</label>
-            <input type="checkbox" style="width: 15px;" />
             <input maxlength="200" type='text' name='question_answer[1]' placeholder='输入选项内容'>
             <a class="icon_add" title="向下插入选项" onclick="add_single_answer($(this));"></a>
             <a class="icon_remove" title="删除" onclick="remove_single_answer($(this))"></a>
@@ -36,7 +33,6 @@
           <div class="cl"></div>
           <li class="ur_item">
             <label>选项C<span class="ur_index"></span>：&nbsp;&nbsp;&nbsp;</label>
-            <input type="checkbox" style="width: 15px;" />
             <input maxlength="200" type='text' name='question_answer[2]' placeholder='输入选项内容'>
             <a class="icon_add" title="向下插入选项" onclick="add_single_answer($(this));"></a>
             <a class="icon_remove" title="删除" onclick="remove_single_answer($(this))"></a>
@@ -44,13 +40,17 @@
           <div class="cl"></div>
           <li class="ur_item">
             <label>选项D<span class="ur_index"></span>：&nbsp;&nbsp;&nbsp;</label>
-            <input type="checkbox" style="width: 15px;" />
             <input maxlength="200" type='text' name='question_answer[3]' placeholder='输入选项内容'>
             <a class="icon_add" title="向下插入选项" onclick="add_single_answer($(this));"></a>
             <a class="icon_remove" title="删除" onclick="remove_single_answer($(this))"></a>
           </li>
       </div>
       <div class="cl"></div>
+      <li class="ur_item">
+        <label>标准答案<span class="ur_index"></span>：&nbsp;&nbsp;&nbsp;</label>
+        <input id="question_standard_ans" name="exercise_choice" placeholder="若标准答案为A,B,C，在答案输入框填入ABC即可" type="text">
+      </li>
+      <div class="cl"></div>
     </ul>
   </div>
   <div class="ur_editor_footer">
diff --git a/app/views/exercise/_show_MC.html.erb b/app/views/exercise/_show_MC.html.erb
index 4c382deb9..d052bd6da 100644
--- a/app/views/exercise/_show_MC.html.erb
+++ b/app/views/exercise/_show_MC.html.erb
@@ -5,8 +5,7 @@
   </div>
 
   <%= link_to("", delete_exercise_question_exercise_index_path(:exercise_question => exercise_question.id, :quest_num => exercise_question.question_number),
-
-              method: :delete, :confirm => l(:text_are_you_sure), :remote => true, :class => "ur_icon_de",:title => "删除")  %>
+              method: :delete, :confirm => l(:text_are_you_sure), :remote => true, :class => "ur_icon_de")  %>
   <a class="ur_icon_edit" title="编辑" onclick="pollQuestionEdit(<%= exercise_question.id%>);"></a>
   <a class='ur_icon_add' title='向下插入' id="add_mc_<%=exercise_question.id%>" onclick="dismiss('mc',<%=exercise_question.id%>);insert_MC('mc',<%=exercise_question.question_number%>,<%=exercise_question.id%>);"></a>
   <div class="cl"></div>
@@ -54,11 +53,9 @@
                                 '<li class="ur_item">'+
                                 '<label>分数<span class="ur_index"></span>：&nbsp;&nbsp;&nbsp;</label>'+
                                 '<input value="<%=score %>" id="question_score" type="text" name="question_score" style="width:40px; text-align:center; padding-left:0px;"/>分'+
-                                '<span class="ml15">标准答案：请选择</span>'+
                                 '</li><div>'+
                                 '<li class="ur_item">'+
                                 '<label>选项A<span class="ur_index"></span>：&nbsp;&nbsp;&nbsp;</label>'+
-                                '<input type="radio" style="width: 15px;" />'+
                                 '<input maxlength="200" type="text" name="question_answer[0]" placeholder="输入选项内容"/>'+
                                 '<a class="icon_add" title="向下插入选项" onclick="add_single_answer($(this));"></a>'+
                                 '<a class="icon_remove"  title="删除" onclick="remove_single_answer($(this))"></a>'+
@@ -66,7 +63,6 @@
                                 '<div class="cl"></div>'+
                                 '<li class="ur_item">'+
                                 '<label>选项B<span class="ur_index"></span>：&nbsp;&nbsp;&nbsp;</label>'+
-                                '<input type="radio" style="width: 15px;" />'+
                                 '<input maxlength="200" type="text" name="question_answer[1]" placeholder="输入选项内容"/>'+
                                 '<a class="icon_add" title="向下插入选项" onclick="add_single_answer($(this));"></a>'+
                                 '<a class="icon_remove"  title="删除" onclick="remove_single_answer($(this))"></a>'+
@@ -74,7 +70,6 @@
                                 '<div class="cl"></div>'+
                                 '<li class="ur_item">'+
                                 '<label>选项C<span class="ur_index"></span>：&nbsp;&nbsp;&nbsp;</label>'+
-                                '<input type="radio" style="width: 15px;" />'+
                                 '<input maxlength="200" type="text" name="question_answer[2]" placeholder="输入选项内容"/>'+
                                 '<a class="icon_add" title="向下插入选项" onclick="add_single_answer($(this));"></a>'+
                                 '<a class="icon_remove" title="删除" onclick="remove_single_answer($(this))"></a>'+
@@ -82,12 +77,16 @@
                                 '<div class="cl"></div>'+
                                 '<li class="ur_item">'+
                                 '<label>选项D<span class="ur_index"></span>：&nbsp;&nbsp;&nbsp;</label>'+
-                                '<input type="radio" style="width: 15px;" />'+
                                 '<input maxlength="200" type="text" name="question_answer[3]" placeholder="输入选项内容"/>'+
                                 '<a class="icon_add" title="向下插入选项" onclick="add_single_answer($(this));"></a>'+
                                 '<a class="icon_remove" title="删除" onclick="remove_single_answer($(this))"></a>'+
                                 '</li></div>'+
                                 '<div class="cl"></div>'+
+                                '<li class="ur_item">'+
+                                '<label>标准答案<span class="ur_index"></span>：&nbsp;&nbsp;&nbsp;</label>'+
+                                '<input name="exercise_choice" id="question_standard_ans" placeholder="若标准答案为A，在此输入A即可" type="text">'+
+                                '</li>'+
+                                '<div class="cl"></div>'+
                                 '</ul>'+
                                 '</div>'+
                                 '<div class="ur_editor_footer">'+
diff --git a/app/views/exercise/_show_MCQ.html.erb b/app/views/exercise/_show_MCQ.html.erb
index 3413007ae..a477303d7 100644
--- a/app/views/exercise/_show_MCQ.html.erb
+++ b/app/views/exercise/_show_MCQ.html.erb
@@ -52,11 +52,9 @@
                                 '<li class="ur_item">'+
                                 '<label>分数<span class="ur_index"></span>：&nbsp;&nbsp;&nbsp;</label>'+
                                 '<input value="<%= score %>" id="question_score" type="text" name="question_score" style="width:40px; text-align:center; padding-left:0px;"/>分'+
-                                '<span class="ml10">标准答案：请选择</span>'+
                                 '</li><div>'+
                                 '<li class="ur_item">'+
                                 '<label>选项A<span class="ur_index"></span>：&nbsp;&nbsp;&nbsp;</label>'+
-                                '<input type="checkbox" style="width: 15px;" />'+
                                 '<input maxlength="200" type="text" name="question_answer[0]" placeholder="输入选项内容"/>'+
                                 '<a class="icon_add" title="向下插入选项" onclick="add_single_answer($(this));"></a>'+
                                 '<a class="icon_remove"  title="删除" onclick="remove_single_answer($(this))"></a>'+
@@ -64,7 +62,6 @@
                                 '<div class="cl"></div>'+
                                 '<li class="ur_item">'+
                                 '<label>选项B<span class="ur_index"></span>：&nbsp;&nbsp;&nbsp;</label>'+
-                                '<input type="checkbox" style="width: 15px;" />'+
                                 '<input maxlength="200" type="text" name="question_answer[1]" placeholder="输入选项内容"/>'+
                                 '<a class="icon_add" title="向下插入选项" onclick="add_single_answer($(this));"></a>'+
                                 '<a class="icon_remove"  title="删除" onclick="remove_single_answer($(this))"></a>'+
@@ -72,7 +69,6 @@
                                 '<div class="cl"></div>'+
                                 '<li class="ur_item">'+
                                 '<label>选项C<span class="ur_index"></span>：&nbsp;&nbsp;&nbsp;</label>'+
-                                '<input type="checkbox" style="width: 15px;" />'+
                                 '<input maxlength="200" type="text" name="question_answer[2]" placeholder="输入选项内容"/>'+
                                 '<a class="icon_add" title="向下插入选项" onclick="add_single_answer($(this));"></a>'+
                                 '<a class="icon_remove" title="删除" onclick="remove_single_answer($(this))"></a>'+
@@ -80,12 +76,16 @@
                                 '<div class="cl"></div>'+
                                 '<li class="ur_item">'+
                                 '<label>选项D<span class="ur_index"></span>：&nbsp;&nbsp;&nbsp;</label>'+
-                                '<input type="checkbox" style="width: 15px;" />'+
                                 '<input maxlength="200" type="text" name="question_answer[3]" placeholder="输入选项内容"/>'+
                                 '<a class="icon_add" title="向下插入选项" onclick="add_single_answer($(this));"></a>'+
                                 '<a class="icon_remove" title="删除" onclick="remove_single_answer($(this))"></a>'+
                                 '</li></div>'+
                                 '<div class="cl"></div>'+
+                                '<li class="ur_item">'+
+                                '<label>标准答案<span class="ur_index"></span>：&nbsp;&nbsp;&nbsp;</label>'+
+                                '<input name="exercise_choice" id="question_standard_ans" placeholder="若标准答案为A,B,C，在答案输入框填入ABC即可" type="text">'+
+                                '</li>'+
+                                '<div class="cl"></div>'+
                                 '</ul>'+
                                 '</div>'+
                                 '<div class="ur_editor_footer">'+