练习材料：
Lesson 5 No wrong numbers
Mr. James Scott has a garage in Silbury and now he has just bought another garage in Pinhurst. Pinhurst is only five miles from Silbury, but Mr. Scott cannot get a telephone for his new garage, so he has just bought twelve pigeons. Yesterday, a pigeon carried the first message from Pinhurst to Silbury. The bird covered the distance in three minutes. Up to now, Mr. Scott has sent a great many requests for spare parts and other urgent messages from one garage to the other. In this way, he has begun his own private telephone service.
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音标学习：元音[i]
任务配置：L0++L1+L4
自从开始练新概念就天天地咳嗽，仿佛又回到了几年前，半夜咳醒的滋味很难受，今天早上早起了，结果突发事件早上又没看成书，继续努力吧，加油
