应用: 浏览器
任务: 启动浏览器，进入主页，选择‘新闻’分类
操作步骤:
step_id: 0
action: CLICK
step_id: 1
action: CLICK
step_id: 2
action: CLICK
step_id: 3
action: CLICK
step_id: 4
action: STOP