Javascript angularjs <select>的默认值是0，而它应该是1

<div ng-app="myApp" ng-controller="myCtrl">
  <select ng-model="selectedValue">
    <option ng-selected="selectedValue == 1" value="0">0</option>
    <option ng-selected="selectedValue == 1" value="1">1</option>
    <option ng-selected="selectedValue == 1" value="2">2</option>
  </select>
</div>

<script>
  var app = angular.module('myApp', []);
  app.controller('myCtrl', function($scope) {
    $scope.selectedValue = 1;
  });
</script>