正文材料：
Lesson 7 Too late
The plane was late and detectives were waiting at the airport all morning. They were expecting a valuable parcel of diamonds from South Africa. A few hours earlier, someone had told the police that thieves would try to steal the diamonds. When the plane arrived, some of the detectives were waiting inside the main building while others were waiting on the airfield. Two men took the parcel off the plane and carried it into the Customs House. While two detectives were keeping guard at the door, two others opened the parcel. To their surprise, the precious parcel was full of stones and sand!
任务设置：L0+L1+L4
L0:
/ðə /pleɪn /wəz/ leɪt /ənd/ dɪˈtɛktɪvz/ wər/ ˈweɪtɪŋ /ət /ði /ˈɛrˌpɔrt /ɔl /ˈmɔrnɪŋ/. ðeɪ /wər/ ɪkˈspɛktɪŋ /ə /ˈvæljəbəl /ˈprsəl/ əv/ ˈdaɪməndz /frəm/saʊθ /ˈæfrəkə/. ə /fju /ˈaʊərz/ ˈɜrliər/, ˈsʌmˌwʌn/ həd/ toʊld /ðə /pəˈlis /ðət /θivz /wəd /traɪ /tə /stil /ðə /ˈdaɪməndz/. wɛn /ðə/ pleɪn/ əˈraɪvd/, səm/əv /ðə /dɪˈtɛktɪvz/ wər /ˈweɪtɪŋ /ɪnˈsaɪd/ ðə /meɪn /ˈbɪldɪŋ /waɪl/ ˈʌðərz/ wər /ˈweɪtɪŋ/ ɑn /ði /ˈɛrˌfild/. tu /mɛn/ tʊk /ðə /ˈpɑrsəl /ɔf /ðə /pleɪn/ ənd/ˈkærid/ ɪt /ˈɪntə/ ðə /ˈkʌstəmz/ haʊs/. waɪl /tu /dɪˈtɛktɪvz /wər/ ˈkipɪŋ /gɑrd /ət /ðə /dɔr/, tu /ˈʌðərz/ ˈoʊpənd /ðə /ˈpɑrsəl/. tə /ðɛr /sərˈpraɪz/, ðə/ˈprɛʃəs /ˈpɑrsəl /wəz// fʊl /əv /stoʊnz /ənd /sænd/.
L1：/ʌ/
1）嘴巴张开一半左百，牙齿分开，下嘴唇略向下。
2）舌中部向硬颚抬起，不要接触到硬颚，舌尖和舌端两侧贴在下。
3）双唇向两边平展形成扁平状，震动声带，短促有力推出气流发出/ʌ/音。
注意：/ʌ/个短元音，要诀是发音时收小腹，注意与/æ/的区别。
本课例词：someone/others/customs/
L4：练习感悟：
写完了，竟然忘记发表了。
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