https://online2.tingclass.net/lesson/shi0529/0008/8662/106w.mp3
https://image.tingclass.net/statics/js/2012
[00:00.00] Point point to the board
[00:21.80]指，指向 指向 这（那）个 （黑、白）板
[00:43.60]door window look look at
[01:01.28]门 窗户 看，观看 （仔细）检查，查看
[01:18.97]sit sit down stand stand up
[01:37.71]坐 坐下 站立 起立
[01:56.45]open children Mr please
[02:47.78]开，打开 （复杂）孩子，儿童 先生 请
