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[00:00.00]Lesson 4第四課
[00:04.74]Listen and number聽錄音，看看自己能聽懂幾個新單詞（聽力練習）
[00:09.22].....
[00:27.71]Let's sing一起來唱英文歌
[00:29.87]HELLO你好
[00:36.01]Hello! Hello! Hello! 
[00:38.61]How are you?
[00:39.89]I'm fine.I'm fine.
[00:41.82]I hope that you are, too.