PPT365 内容较多时如何选取对象？

[[{"txt": "\u5f53\u5bf9\u9875\u9762\u8bbe\u7f6e\u65f6\uff0c\u7531\u4e8e\u5c42\u7ea7\u5173\u7cfb\u6709\u7684\u5728\u5e95\u5c42\u4e0d\u597d\u9009\u53d6\u3002\u6b64\u65f6\uff0c\u5229\u7528\u9009\u62e9\u7a97\u683c\u5c31\u4f1a\u987a\u5229\u89e3\u51b3\u3002\u00a0"}, {"img": ["https://exp-picture.cdn.bcebos.com/906dbbcadce8904813929845130e5f20427192c0.m2m?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_500%2Climit_1"]}], [{"txt": ["\u5de5\u5177/\u539f\u6599"]}, {"txt": "PPT 365"}], [{"txt": ["\u65b9\u6cd5/\u6b65\u9aa4"]}, {"txt": "\u6253\u5f00PPT365.\u5982\u56fe\uff1a"}, {"img": ["https://exp-picture.cdn.bcebos.com/cf6d451b1edef4dc3949fcad45ecd3d968750cc7.m2m?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_500%2Climit_1"]}, {"txt": "\u70b9\u51fb\u5f00\u59cb\u3002\u5982\u56fe\uff1a\u00a0"}, {"img": ["https://exp-picture.cdn.bcebos.com/d400248ca608a50fbc8cbf3e10cec7f88b77ffc6.m2m?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_500%2Climit_1"]}, {"txt": "\u5728\u6700\u53f3\u4fa7\u70b9\u51fb\u201c\u9009\u62e9\u6309\u94ae\u201d\u3002\u5982\u56fe\uff1a"}, {"img": ["https://exp-picture.cdn.bcebos.com/3931cb413a8ca608827f7b4edb8c9bcec6f8fec6.m2m?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_500%2Climit_1"]}, {"txt": "\u9009\u62e9\u201c\u9009\u62e9\u7a97\u683c\u201d\u3002\u5982\u56fe\uff1a"}, {"img": ["https://exp-picture.cdn.bcebos.com/444696013870d5411ffc49ba2e0f94fc518c80c6.m2m?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_500%2Climit_1"]}, {"txt": "\u6b64\u65f6\uff0c\u5728\u53f3\u4fa7\u9009\u62e9\u7a97\u683c\u5c06\u6253\u5f00\u3002\u5982\u56fe\uff1a"}, {"img": ["https://exp-picture.cdn.bcebos.com/589f5b0788013870f131d53e2d08a50f95fc83c6.m2m?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_500%2Climit_1"]}, {"txt": "\u9009\u4e2d\u5bf9\u8c61\u3002\u5982\u56fe\uff1a"}, {"img": ["https://exp-picture.cdn.bcebos.com/89402670d5413a8c80784abd1ffc508c9ace81c6.m2m?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_500%2Climit_1"]}], [{"txt": ["\u603b\u7ed3"]}, {"txt": "1.\u6253\u5f00\u9009\u62e9\u7a97\u683c\u30022.\u9009\u53d6\u5bf9\u8c61\u5373\u53ef\u3002"}]]