5．请听一段独白，完成第12至第13小题． 12．What is the topic of the programme today？ A．The types of music． B．The language of music． C．The instruments of music． 13．What will the listeners enjoy first？ A．Western pop music． B．A famous piano piece． C．Songs by African Americans．
4．71．We teenagers must learnto protect ourselves to keep safe． 72．If we cookby ourselvesat home，we should be more careful． 73．We must remember not to letstrangers in when we stay at home alone． 74．When we walkacross the crossings，we should follow the traffic lights． 75．We should listen to our teachers and not dodangerous things at school．
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