<html><script src="https://cdn.staticfile.net/angular.js/1.6.9/angular.min.js"></script><body ng-app="">点击此处选择BMW作为您的最爱车型：<input type="checkbox" ng-model="mySel"><p>我最爱的车型：</p><select> <option>Volvo</option> <option ng-selected="mySel">BMW</option> <option>Ford</option> </select></body></html>