练习材料：
Who's who Part-1
huːz huː pɑːt-1
It has never been explained why university students seem to enjoy practical jokes more than else. Students specialize in a particular type of practical joke: the hoax. Inviting the fire brigade to put out a nonexistent fire is a crude form of deception which no self-respecting student would ever indulge in. Students often create amusing situations which are funny to everyone except the victims.
When a student recently saw two workmen using a pneumatic drill outside his university, he immediately telephoned the police and informed them that two students dressed up as workmen were tearing up the road with a pneumatic drill. As soon as he had hung up, he went over to the workmen and told them that if a policeman ordered them to go away, they were not take him seriously. He added that a student had dressed up as a policeman and was playing all sorts of silly jokes on people. Both the police and the workmen were grateful to the student for this piece of advance information.
ɪt hæz ˈnɛvə biːn ɪksˈpleɪnd waɪ ˌjuːnɪˈvɜːsɪti ˈstjuːdənts siːm tuː ɪnˈʤɔɪ ˈpræktɪkəl ʤəʊks mɔː ðæn ɛls. ˈstjuːdənts ˈspɛʃəlaɪz ɪn ə pəˈtɪkjʊlə taɪp ɒv ˈpræktɪkəl ʤəʊk: ðə həʊks. ɪnˈvaɪtɪŋ ðə ˈfaɪə brɪˈgeɪd tuː pʊt aʊt ə nonexistent ˈfaɪər ɪz ə kruːd fɔːm ɒv dɪˈsɛpʃən wɪʧ nəʊ sɛlf-rɪsˈpɛktɪŋ ˈstjuːdənt wʊd ˈɛvər ɪnˈdʌlʤ ɪn. ˈstjuːdənts ˈɒf(ə)n kri(ː)ˈeɪt əˈmjuːzɪŋ ˌsɪtjʊˈeɪʃənz wɪʧ ɑː ˈfʌni tuː ˈɛvrɪwʌn ɪkˈsɛpt ðə ˈvɪktɪmz.
wɛn ə ˈstjuːdənt ˈriːsntli sɔː tuː ˈwɜːkmən ˈjuːzɪŋ ə nju(ː)ˈmætɪk drɪl ˌaʊtˈsaɪd hɪz ˌjuːnɪˈvɜːsɪti, hiː ɪˈmiːdiətli ˈtɛlɪfəʊnd ðə pəˈliːs ænd ɪnˈfɔːmd ðɛm ðæt tuː ˈstjuːdənts drɛst ʌp æz ˈwɜːkmən wɜː ˈteərɪŋ ʌp ðə rəʊd wɪð ə nju(ː)ˈmætɪk drɪl. æz suːn æz hiː hæd hʌŋ ʌp, hiː wɛnt ˈəʊvə tuː ðə ˈwɜːkmən ænd təʊld ðɛm ðæt ɪf ə pəˈliːsmən ˈɔːdəd ðɛm tuː gəʊ əˈweɪ, ðeɪ wɜː nɒt teɪk hɪm ˈsɪərɪəsli. hiː ˈædɪd ðæt ə ˈstjuːdənt hæd drɛst ʌp æz ə pəˈliːsmən ænd wɒz ˈpleɪɪŋ ɔːl sɔːts ɒv ˈsɪli ʤəʊks ɒn ˈpiːpl. bəʊθ ðə pəˈliːs ænd ðə ˈwɜːkmən wɜː ˈgreɪtfʊl tuː ðə ˈstjuːdənt fɔː ðɪs piːs ɒv ədˈvɑːns ˌɪnfəˈmeɪʃən.
谁也弄不清为什么大学生好像比任何人都更喜欢恶作剧。大学生擅长一种特殊的恶作剧——戏弄人。请消防队来扑灭一场根本没有的大火是一种低级骗局，有自尊心的大学生决不会去做。大学生们常常做的是制造一种可笑的局面，使大家笑上一场，当然受害者是笑不出来的。
最近有个学生看见两个工人在学校门外用风钻干活，马上打电话报告警察，说有两个学生装扮成工人，正在用风钻破坏路面。挂上电话后，他又马上来到工人那儿，告诉他们若有个警察来让他们走开，不要把他当回事，还对工人说，有个学生常装扮成警察无聊地同别人开玩笑。警察与工人都对那个学生事先通报情况表示感谢。
任务配置：L0、L3、L4
知识笔记：
单词与短语
It has never been explained why谁也弄不清楚为什么
specialize in擅长
nonexistent/ˌnɒnɪɡˈzɪstənt/：not having being or existence
a crude form of deception低级骗局
indulge in去做
pneumatic/ nju(ː)ˈmætɪk/operated by air or by the pressure or exhaustion of air:
dress up as装扮
be take sth/sb seriously不把某物/人当回事
play all sorts silly jokes on people无聊地同别人开玩笑
be grateful to sb for sth对某人做某事表示感激
advance information事先通报
练习感悟：一天未完成新概念作业，就感觉整个人都不好了。