如何在AngularJS的所有范围中使用相同的属性值

The following is my view

以下是我的观点

  <div ng-if="isMultiChoiceQuestion()">
                <li class="displayAnswer" ng-repeat="choice in getMultiChoice() track by $index" ng-if="isNotEmpty(choice.text.length)">
                            <input type="checkbox" ng-checked="checkForSelection(choice.id)"
                            value="choice.text" disabled="true">
                      <span ng-class="getCSSClass($index, choice.id)">{{choice.text}}</span>
                </li>
              </div>

            <a class="weiter-link" ng-click="flipBack()">Zur Frage</a>

                <div ng-if="isMultiChoiceQuestion()">
                  <!--Changed ng-bind getScore() -> score -->
                      <h4>Bewertung speichern: <span ng-bind="getScore()"></span></h4>
                  <br />
                      <a class="weiter-link" ng-click="incrementOne()">Zur nächsten Frage</a>
                </div>
                  <div ng-if="!isMultiChoiceQuestion()">
                        <h3>Eigene Bewertung: {{score}}</h3>
                        <div class="ranger">
                          <input type="range" max="10" min="0" step="1" id="selfRanger" ng-model="score">
                        </div>
                        <a class="weiter-link" ng-click="submitScore(score)">Bewertung speichern</a>
                            <a class="weiter-link" ng-click="incrementOne()">Zur nächsten Frage</a>
            </div>
  <div ng-