练习材料：
Lesson 18-1 Porpoises
There has longbeen a superstition among mariners that porpoises will save drowning men bypushing them to the surface, or protect them from sharks by surrounding them indefensive formation. Marine Studio biologists have pointed out that, howeverintelligent they may be, it is probably a mistake to credit dolphins with anymotive of lifesaving. On the occasions when they have pushed to shore anunconscious human being they have much more likely done it out of curiosity orfor sport, as in riding the bow waves of a ship. In 1928 some porpoises werephotographed working like beavers to push ashore a waterlogged mattress. If, ashas been reported, they have protected humans from sharks, it may have beenbecause curiosity attracted them and because the scent of a possible mealattracted the sharks.
ˈpɔːpəsɪz
ðeə hæz lɒŋ biːn ə
ˌsjuːpəˈstɪʃən əˈmʌŋ ˈmærɪnəz ðæt ˈpɔːpəsɪz wɪl seɪv ˈdraʊnɪŋ mɛn baɪ ˈpʊʃɪŋ ðɛm
tuː ðə ˈsɜːfɪs, ɔː prəˈtɛkt ðɛm frɒm ʃɑːks baɪ səˈraʊndɪŋ ðɛm ɪn dɪˈfɛnsɪv fɔːˈmeɪʃən. məˈriːn
ˈstjuːdɪəʊ baɪˈɒləʤɪsts hæv ˈpɔɪntɪd aʊt ðæt, haʊˈɛvər ɪnˈtɛlɪʤənt ðeɪ meɪ biː,
ɪt ɪz ˈprɒbəbli ə mɪsˈteɪk tuː ˈkrɛdɪt ˈdɒlfɪnz wɪð ˈɛni ˈməʊtɪv ɒv ˈlaɪfˈseɪvɪŋ.
ɒn ði əˈkeɪʒənz wɛn ðeɪ hæv pʊʃt tuː ʃɔːr ən ʌnˈkɒnʃəs ˈhjuːmən ˈbiːɪŋ ðeɪ hæv
mʌʧ mɔː ˈlaɪkli dʌn ɪt aʊt ɒv ˌkjʊərɪˈɒsɪti ɔː fɔː spɔːt, æz ɪn ˈraɪdɪŋ ðə baʊ
weɪvz ɒv ə ʃɪp. ɪn 1928 sʌm ˈpɔːpəsɪz wɜː ˈfəʊtəgrɑːft ˈwɜːkɪŋ laɪk ˈbiːvəz tuː pʊʃ əˈʃɔːr ə
ˈwɔːtəlɒgd ˈmætrɪs. ɪf, æz hæz biːn rɪˈpɔːtɪd, ðeɪ hæv prəˈtɛktɪd ˈhjuːmənz frɒm
ʃɑːks, ɪt meɪ hæv biːn bɪˈkɒz ˌkjʊərɪˈɒsɪti əˈtræktɪd
ðɛm ænd bɪˈkɒz ðə sɛnt ɒv ə ˈpɒsəbl miːl əˈtræktɪd ðə ʃɑːks.
任务配置：L0 + L4
知识笔记：
单词：1、porpoises：江豚，2、superstition：迷信，3、mariner：水手，海员，4、drowning：溺水，5、defensive：防守，防御性，6、formation：形成，编队，构成，7、marine：海洋，舰队，8、studio：工作室，9、biologist：生物学家，10、curiosity：好奇心，11、bow：弓，鞠躬，12、beaver：海狸，河狸，13、ashore：岸上，14、waterlogged：淹水，15、mattress：床垫，16、scent：香味
音标：
练习感悟：前几天，因为有点事情处理，所以匆匆忙忙就出门，没有带东西，完全没办法读，所以就中断了几天。今天发现，才中断了几天而已，再重新捡起来读，那种语感就消失了非常多，所以说，这真的就是赢者通吃的事情，一旦不持续，就全完了，之前学的就都白费了。
