&& item.question.min_choices && item.question.max_choice

public/react/src/modules/courses/poll/PollDetailTabSecond.js

@@ -66,7 +66,7 @@ class PollDetailTabSecond extends Component{
                 <span className="font-16 clearfix">
                   <span className="color-blue fl">{parseInt(page-1)*parseInt(limit)+(key+1)}、{map[item.question.question_type]}</span>
                   { item.question.is_necessary==1 ? <span className="mustAnswer fl ml10 mr10 mt6">必答</span>:"" }
-                  { item.question.question_type == 2 ? 
+                  { item.question.question_type == 2 && item.question.min_choices && item.question.max_choice ? 
                   <span className="color-grey-9">
                     {
                       item.question.min_choices == item.question.max_choices ? "可选"+item.question.max_choices+"项" :