练习材料：
Lesson 18-1 Porpoises
There has longbeen a superstition among mariners that porpoises will save drowning men by pushingthem 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
ˈsuːpəˈstɪʃᵊn 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
ˈstjuːdiəʊ 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 ˌkjʊəriˈɒsəti ɔː fɔː spɔːt, æz ɪn ˈraɪdɪŋ ðə bəʊ
weɪvz ɒv ə ʃɪp. ɪn 1928 sʌm ˈpɔːpəsɪz wɜː ˈfəʊtəɡrɑːft ˈwɜːkɪŋ laɪk ˈbiːvəz tuː pʊʃ əˈʃɔːr ə ˈwɔːtəlɒɡd ˈmætrɪs. ɪf, æz hæz biːn rɪˈpɔːtɪd, ðeɪ
hæv prəˈtɛktɪd ˈhjuːmənz frɒm ʃɑːks, ɪt meɪ hæv biːn bɪˈkɒz ˌkjʊəriˈɒsəti əˈtræktɪd ðɛm ænd bɪˈkɒz ðə sɛnt
ɒv ə ˈpɒsəbᵊl miːl əˈtræktɪd ðə ʃɑːks.
任务配置：L0 + L4
知识笔记：
单词：1、porpoises：海豚，2、superstition：迷信，3、mariner：水手，海员，4、drowning：溺水，溺死，5、defensive：防御性的，防卫，6、formation：形成，编队，构成，构造，7、marine：海洋，舰队，海产的，8、biologist：生物学家，9、dolphin：海豚，10、motive：动机，目的，发动的，11、unconscious：无意识，昏迷，失去意识，12、curiosity：好奇心，13、bow：弓，鞠躬，哈腰，14、beaver：海狸，河狸，15、ashore：岸上，向岸地，16、waterlogged：浸水的，17、mattress：床垫，空气垫，18、scent：香味，香水
音标：
练习感悟：新概念4的文章，难度确实比较大，生词也比较多，不过今天这篇还是录了两遍就达标，还可以。
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