练习材料：
NCE--第四册
Lesson 7-2 Bats
Every solid object will reflect a sound, varying according to the size and nature of the object. A shoal of fish will do this. So it is a comparatively simple step from locating the sea bottom to locating a shoal of fish. With experience, and with improved apparatus, it is now possible not only to locate a shoal but to tell if it is herring, cod, or other well-known fish, by the pattern of its echo.
It has been found that certain bats emit squeaks and by receiving the echoes, they can locate and steer clear of obstacles -- or locate flying insects on which they feed. This echo-location in bats is often compared with radar, the principle of which is similar.
[ˈɛvri] [ˈsɒlɪd] [ˈɒbʤɪkt] [wɪl] [rɪˈflɛkt] [ə] [saʊnd], [ˈveəriɪŋ] [əˈkɔːdɪŋ] [tuː] [ðə] [saɪz] [ænd] [ˈneɪʧər] [ɒv] [ði] [ˈɒbʤɪkt]. [ə] [ʃəʊl] [ɒv] [fɪʃ] [wɪl] [duː] [ðɪs]. [səʊ] [ɪt] [ɪz] [ə] [kəmˈpærətɪvli] [ˈsɪmpl] [stɛp] [frɒm] [ləʊˈkeɪtɪŋ] [ðə] [siː] [ˈbɒtəm] [tuː] [ləʊˈkeɪtɪŋ] [ə] [ʃəʊl] [ɒv] [fɪʃ]. [wɪð] [ɪksˈpɪərɪəns], [ænd] [wɪð] [ɪmˈpruːvd] [ˌæpəˈreɪtəs], [ɪt] [ɪz] [naʊ] [ˈpɒsəbl] [nɒt] [ˈəʊnli] [tuː] [ləʊˈkeɪt] [ə] [ʃəʊl] [bʌt] [tuː] [tɛl] [ɪf] [ɪt] [ɪz] [ˈhɛrɪŋ], [kɒd], [ɔːr] [ˈʌðə] [wɛl]-[nəʊn] [fɪʃ], [baɪ] [ðə] [ˈpætən] [ɒv] [ɪts] [ˈɛkəʊ].
[ɪt] [hæz] [biːn] [faʊnd] [ðæt] [ˈsɜːtn] [bæts] [ɪˈmɪt] [skwiːks] [ænd] [baɪ] [rɪˈsiːvɪŋ] [ði] [ˈɛkəʊz], [ðeɪ] [kæn] [ləʊˈkeɪt] [ænd] [stɪə] [klɪər] [ɒv] [ˈɒbstəklz] -- [ɔː] [ləʊˈkeɪt] [ˈflaɪɪŋ] [ˈɪnsɛkts] [ɒn] [wɪʧ] [ðeɪ] [fiːd]. [ðɪs] [ˈɛkəʊ]-[ləʊˈkeɪʃən] [ɪn] [bæts] [ɪz] [ˈɒf(ə)n] [kəmˈpeəd] [wɪð] [ˈreɪdə], [ðə] [ˈprɪnsəpl] [ɒv] [wɪʧ] [ɪz] [ˈsɪmɪlə].
任务配置：
L0+L4
知识笔记 ：
练习感悟：
今天是课文后半段，生词不多，依旧是复杂句要理解。现在除了读音还有一个明显的问题就是连读，不会连读速度就会慢很多，尽量模仿，回想以前S早读讲过的东西。
