老师
同学们大家好，欢迎来到北京市中小学空中课堂。我是北京市第十七中学的侯文丽老师。今天我们将要学习的课程是外研版英语九年级上册 revision MODULE b 的第三课时。下面让我们开始今天的学习。
老师
first， please turn to page one hundred and seven look at the pictures and describe them， what can you see in the pictures？ we can see some children what electronic devices are they using yes， they are using a mobile phone， a radio and a computer what are the children probably doing please make your prediction are the two girls talking with their friends on the mobile phone is the girl listening to music over the radio， is the boy having a lesson on the computer now， please turn to page one hundred and eight read the passage and check your prediction okay， have you finished the title tells us that the children are probably the students of the school and from the keywords，radio， computer and telephone we can easily find out the key sentences so we have air license over the radio or on the computer。 when we get there we turn on the radio or computer and listen to what we should do t