应用: 饿了么
任务: 打开饿了么，进入首页，查看“低脂饮食”
操作步骤:
step_id: 0
action: CLICK
step_id: 1
action: CLICK
step_id: 2
action: TYPE
type_text: 低脂饮食
step_id: 3
action: CLICK
step_id: 4
action: STOP