0:00 1:30
            [00:00.00]
            [00:18.32]Unit 4 Fun with numbers
[00:23.80]一、听一听,根据所听到的内容排序。只读两遍哟!
[00:34.90]1.No.6 
[00:51.57]2.No.10 
[01:07.24]3.No.9 
[01:24.25]4.No.7 
[01:41.10]5.No.8
[01:56.45]二、听一听,选出你所听到的句子。只读两遍哟!
[02:07.39] 1.How many bags can you see?
[02:27.58] 2.Let me show you.
[02:44.95] 3.How many ropes?
[03:03.79] 4.How do you make it?
[03:20.45] 5.This is a Chinese knot.