问如何使用随机选择的图片创建Google表单？

EN

// create an array of images from a google drive folder
// you'll need the id of the folder
var imageFolder = DriveApp.getFolderById(imageFolderId);
var imageFiles = imageFolder.getFiles();
var imageArray = [];
while (imageFiles.hasNext()) {
  var image = imageFiles.next();
  imageArray.push(image);
}

// when creating your form, use the imageArray created in the previous step
// you'll index the imageArray with a random number from 0 to the number of images - 1
var randomImageIndex = Math.floor(Math.random() * imageArray.length);
var img = imageArray[randomImageIndex]
form.addImageItem()
    .setTitle('My Random Image title')
    .setHelpText('My Random Image text') // The help text is the image description
    .setImage(img);