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[00:00.00]Unit 2  It's a black dog.                   
[00:05.67]一、Listen and number. 听一听，排排序。 
[00:12.88]1.M:cat                                    
[00:20.24]2.W:dog                                   
[00:26.00]3.M:cap                                 
[00:32.68]4.W:panda                               
[00:38.41]二、Listen and colour. 听一听，涂一涂。 
[00:44.95]1.M:Look! It's a black cap.              
[00:56.52]2.W:A green cat.                   
[01:08.00]3.M:It's a red bird.                        
[01:17.58]4.W:It's a blue desk.                     
[01:27.66]5.M:Look!Look! Yellow.                    
[01:37.41]6.W:Look!A purple dog.