1、练习材料：
Lesson 7 Too late
The plane was late and detectives were waiting at the airport all morning. They were expecting a valuable parcel of diamondsfrom 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!
ðə pleɪn wəz leɪt ənd dɪˈtɛktɪvz wər ˈweɪtɪŋ ət ði ˈɛrˌpɔrt ɔl ˈmɔrnɪŋ. ðeɪ wər ɪkˈspɛktɪŋ ə ˈvæljəbəl ˈpɑrsəl əv ˈdaɪməndz frəm saʊθˈæfrəkə.
ə fju ˈaʊərz ˈɜrliər, ˈsʌmˌwʌn həd toʊld ðə pəˈlis ðət θivz wəd traɪ tə stil ðə ˈdaɪməndz. wɛn ðə pleɪn əˈraɪvd, səm əv ðədɪˈtɛktɪvz wər ˈweɪtɪŋ ɪnˈsaɪd ðə meɪn ˈbɪldɪŋ waɪl ˈʌðərz wər ˈweɪtɪŋ ɑn ði ˈɛrˌfild.
tu mɛn tʊk ðə ˈpɑrsəl ɔf ðə pleɪn ənd ˈkærid ɪtˈɪntə ðə ˈkʌstəmz haʊs. waɪl tu dɪˈtɛktɪvz wər ˈkipɪŋ gɑrd ət ðə dɔr, tu ˈʌðərz ˈoʊpənd ðə ˈpɑrsəl. tə ðɛr sərˈpraɪz, ðə ˈprɛʃəsˈpɑrsəl wəz fʊl əv stoʊnz ənd sænd!
2、任务配置：
L0+L4
3、知识笔记：
4、身边有人加入喽，娃也在挑战21天，第二轮快完成了。
