练习材料：
NCE--第四册
esson 18-1 Porpoises
There has long been a superstition among mariners that porpoises will save drowning men by pushing them to the surface, or protect them from sharks by surrounding them in defensive formation. Marine Studio biologists have pointed out that, however intelligent they may be, it is probably a mistake to credit dolphins with any motive of lifesaving. On the occasions when they have pushed to shore an unconscious human being they have much more likely done it out of curiosity or for sport, as in riding the bow waves of a ship. In 1928 some porpoises were photographed working like beavers to push ashore a waterlogged mattress. If, as has been reported, they have protected humans from sharks, it may have been because curiosity attracted them and because the scent of a possible meal attracted the sharks.
[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 ：
练习感悟：
今天是课文前半部分，生词多，语法现象也多。感觉最近的文章读起来都比较费力，句子中代词的指代关系比较难，各种从句混在一起，或者嵌套经常分不清。
