练习材料：

Lesson53    Hot snake

At last firemenhave put out a big forest fire in California. Since then, they have been tryingto find out how the fire began. Forest fires are often caused by broken glassor by cigarette ends which people carelessly throw away. Yesterday the firemenexamined the ground carefully, but were not able to find any broken glass. Theywere also quite sure that a cigarette end did not start the fire. This morning,however, a fireman accidentally discovered the cause. He noticed the remains ofa snake which was wound round the electric wires of a 16,000-volt power line.In this way, he was able to solve the mystery. The explanation was simple butvery unusual. A bird had snatched up the snake from the ground and thendropped it on to thewires. The snake then wound itself round the wires. When it did so, it sentsparks down to the ground and these immediately started a fire.

æt lɑːst ˈfaɪəmən hæv pʊt aʊt ə bɪg ˈfɒrɪst ˈfaɪər ɪn ˌkæləˈfɔːniə. sɪns ðɛn, ðeɪ hæv biːn ˈtraɪɪŋ tuː faɪnd aʊt haʊ ðə ˈfaɪə bɪˈgæn. ˈfɒrɪst ˈfaɪəz ɑːr ˈɒf(ə)n kɔːzd baɪ ˈbrəʊkən glɑːs ɔː baɪ ˌsɪgəˈrɛt ɛndz wɪʧ ˈpiːpl ˈkeəlɪsli θrəʊ əˈweɪ. ˈjɛstədeɪ ðə ˈfaɪəmən ɪgˈzæmɪnd ðə graʊnd ˈkeəfli, bʌt wɜː nɒt ˈeɪbl tuː faɪnd ˈɛni ˈbrəʊkən glɑːs. ðeɪ wɜːr ˈɔːlsəʊ kwaɪt ʃʊə ðæt ə ˌsɪgəˈrɛt ɛnd dɪd nɒt stɑːt ðə ˈfaɪə. ðɪs ˈmɔːnɪŋ, haʊˈɛvə, ə ˈfaɪəmən ˌæksɪˈdɛntəli dɪsˈkʌvəd ðə kɔːz. hiː ˈnəʊtɪst ðə rɪˈmeɪnz ɒv ə sneɪk wɪʧ wɒz wuːnd raʊnd ði ɪˈlɛktrɪk ˈwaɪəz ɒv eɪ 16,000-vəʊlt ˈpaʊə laɪn. ɪn ðɪs weɪ, hiː wɒz ˈeɪbl tuː sɒlv ðə ˈmɪstəri. ði ˌɛkspləˈneɪʃən wɒz ˈsɪmpl bʌt ˈvɛri ʌnˈjuːʒʊəl.ə  bɜːd hæd snæʧt ʌp ðə sneɪk frɒm ðə graʊnd ænd ðɛn drɒpt ɪt ɒn tuː ðə ˈwaɪəz. ðə sneɪk ðɛn wuːnd ɪtˈsɛlf raʊnd ðə ˈwaɪəz. wɛn ɪt dɪd səʊ, ɪt sɛnt spɑːks daʊn tuː ðə graʊnd ænd ðiːz ɪ miːdiətli ˈstɑːtɪd ə ˈfaɪə.

任务配置：L0+L1+L4

知识笔记：

单词：1、put out：扑灭，2、examined：检查、审核、考验，3、accidentally：偶然地，4、remains of a snake：蛇的遗骸，5、wound round：缠绕，6、wires：电线，7、snatched：抓取，夺取，8、sparks：火花

音标：/dr/ 舌尖抵住上齿，作好发“d”的姿势，气流冲破阻碍，发出短促的“d”音后，紧接着就发“r”这摩擦音

练习感悟： 今天这个语速，好快，练习跟读的时候要跟上都很难。