测验题目的删除按钮增加title

app/views/exercise/_show_MC.html.erb

@@ -5,7 +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")  %>
+              method: :delete, :confirm => l(:text_are_you_sure), :remote => true, :class => "ur_icon_de",:title => "删除")  %>
   <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>

app/views/exercise/_show_MCQ.html.erb

@@ -4,7 +4,7 @@
     <span class="ml10">(<%= convert_to_char(exercise_question.exercise_standard_answers.first.exercise_choice_id.to_s) %>)</span>
   </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")  %>
+              method: :delete, :confirm => l(:text_are_you_sure), :remote => true, :class => "ur_icon_de",:title => "删除")  %>
   <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_mcq_<%=exercise_question.id%>" onclick="dismiss('mcq',<%=exercise_question.id%>);insert_MCQ('mcq',<%=exercise_question.question_number%>,<%=exercise_question.id%>);"></a>
   <div class="cl"></div>

app/views/exercise/_show_single.html.erb

@@ -3,7 +3,7 @@
     <%= exercise_question.question_title %>
   </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") %>
+              method: :delete, :confirm => l(:text_are_you_sure), :remote => true,  :class => "ur_icon_de",:title => "删除") %>
   <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_single_<%=exercise_question.id%>" onclick="dismiss('single',<%=exercise_question.id%>);insert_SINGLE('single',<%=exercise_question.question_number%>,<%=exercise_question.id%>);"></a>
   <div class="cl"></div>