如何在angularJS应用中为ng-options设置默认值？

Question

我是AngularJS的新手，正在尝试为SELECT ng-options设置默认值。

vm.surveyAll = [
        { SurveyID: 160, SurveyName: 'VIP Tour Request', ShowYear: 2019 },
        { SurveyID: 159, SurveyName: 'CalfScramble Survey', ShowYear: 2019 },
        { SurveyID: 158, SurveyName: 'Marketing Survey', ShowYear: 2019 },

选择显示年份= 2019（下拉选择） 选择Survey =（要设置默认值vm.surveyAll [0]

<select ng-model="admin.SurveyID"
class="form-control" id="surveyName" 
name="surveyName" style="width:1000px;" 
ng-options="item.SurveyID as item.SurveyName for item in 
admin.surveyLists track by item.SurveyID" </select> 

In the controller, vm.ShowYear = 2019

I would like to set the default SurveyID = 160 and SurveyName=VIP Tour 
Request

请帮助我解决该问题的方法。

谢谢。