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20作业: (1)观看1.12课件,了解几种现代通讯方式,并注意其中的重点短语 (2)回答下列问题:What are the four modern modes of communication?(中英文对照) (3)Write an Email to your best friend about the situation of NCP ( Novel coronavirus pneumonia ) in Full Format . You can say somthing about how you are contributed into the national fighting against the NCP.