答案抄袭的调整

app/views/exercise/_exercise_student_result.html.erb

@@ -295,7 +295,7 @@
                     <a href="javascript:void(0)" onclick="toggle_comment_block(<%= exercise_question.id %>, <%= exercise_shixun_answer.id %>)" data-remote="true" class="mr15 color-blue">调分</a>
                   <% end %>
 
-                  <% if game.present? && game.status == 2 && !is_answer_correct && game.answer_open %>
+                  <% if game.present? && game.status == 2 && @exercise_user.end_at && game.end_time < @exercise_user.end_at && !is_answer_correct && game.answer_open %>
                     <span class="color-red mr5">（答案抄袭）</span>
                   <% end %>
                   <% score = exercise_shixun_answer.present? ? exercise_shixun_answer.try(:score) : 0 %>