1、练习材料：Lesson27 A wet night（49s）
Late in the afternoon, the boys put up their tent in the middle of a field. As soon as this was done, they cooked a meal over an open fire. They were all hungry and the food smelt good. After a wonderful meal, they told stories and sang songs by the camp fire. But some time later it began to rain. The boys felt tired so they put out the fire and crept into their tent. Their sleeping-bags were warm and comfortable, so they all slept soundly. In the middle of the night, two boys woke up and began shouting. The tent was full of water! They all leapt out of their sleeping-bags and hurried outside. It was raining heavily and they found that a stream had formed in the field. The stream wound its way across the field and then flowed right under their tent!
音标翻译：
ˈlɛsən27 ə wɛt naɪt
leɪt ɪn ði ˌæftərˈnun, ðə bɔɪz pʊt ʌp ðɛr tɛnt ɪn ðə ˈmɪdəl ʌv ə fild. æz sun æz ðɪs wʌz dʌn, ðeɪ kʊkt ə mil ˈoʊvər ən ˈoʊpən ˈfaɪər. ðeɪ wɜr ɔl ˈhʌŋgri ænd ðə fud smɛlt gʊd. ˈæftər ə ˈwʌndərfəl mil, ðeɪ toʊld ˈstɔriz ænd sæŋ sɔŋz baɪ ðə kæmp ˈfaɪər. bʌt sʌm taɪm ˈleɪtər ɪt bɪˈgæn tu reɪn. ðə bɔɪz fɛlt ˈtaɪərd soʊ ðeɪ pʊt aʊt ðə ˈfaɪər ænd krɛpt ˈɪntu ðɛr tɛnt. ðɛr ˈslipɪŋ-bægz wɜr wɔrm ænd ˈkʌmfərtəbəl, soʊ ðeɪ ɔl slɛpt ˈsaʊndli. ɪn ðə ˈmɪdəl ʌv ðə naɪt, tu bɔɪz woʊk ʌp ænd bɪˈgæn ˈʃaʊtɪŋ. ðə tɛnt wʌz fʊl ʌv ˈwɔtər! ðeɪ ɔl lɛpt aʊt ʌv ðɛr ˈslipɪŋ-bægz ænd ˈhɜrid ˈaʊtˈsaɪd. ɪt wʌz ˈreɪnɪŋ ˈhɛvəli ænd ðeɪ faʊnd ðæt ə strim hæd fɔrmd ɪn ðə fild. ðə strim wund ɪts weɪ əˈkrɔs ðə fild ænd ðɛn floʊd raɪt ˈʌndər ðɛr tɛnt!
2、任务配置：L0+L1
