练习材料：
NCE--第四册
Lesson 42-5 Recording an earthquake
it would be up and down, to and fro and from side to side. Instruments have been devised and can be so placed that all three elements can be recorded in different graphs. When the instrument is situated at more than 700 miles from the earthquake centre,
the graphic record shows three waves arriving one after the other at short intervals. The first records the arrival of longitudinal vibrations. The second marks the arrival of transverse vibrations which travel more slowly and arrive several minutes after the first. These two have travelled through the earth. It was from the study of these that so much was learnt about the interior of the earth. The third, or main wave, is the slowest and has travelled round the earth through the surface rocks.
[ɪt] [wʊd] [biː] [ʌp] [ænd] [daʊn], [tuː] [ænd] [frəʊ] [ænd] [frɒm] [saɪd] [tuː] [saɪd]. [ˈɪnstrʊmənts] [hæv] [biːn] [dɪˈvaɪzd] [ænd] [kæn] [biː] [səʊ] [pleɪst] [ðæt] [ɔːl] [θriː] [ˈɛlɪmənts] [kæn] [biː] [rɪˈkɔːdɪd] [ɪn] [ˈdɪfrənt] [grɑːfs]. [wɛn] [ði] [ˈɪnstrʊmənt] [ɪz] [ˈsɪtjʊeɪtɪd] [æt] [mɔː] [ðæn] 700 [maɪlz] [frɒm] [ði] [ˈɜːθkweɪk] [ˈsɛntə],
[ðə] [ˈgræfɪk] [ˈrɛkɔːd] [ʃəʊz] [θriː] [weɪvz] [əˈraɪvɪŋ] [wʌn] [ˈɑːftə] [ði] [ˈʌðər] [æt] [ʃɔːt] [ˈɪntəvəlz]. [ðə] [fɜːst] [ˈrɛkɔːdz] [ði] [əˈraɪvəl] [ɒv] [ˌlɒnʤɪˈtjuːdɪnl] [vaɪˈbreɪʃənz]. [ðə] [ˈsɛkənd] [mɑːks] [ði] [əˈraɪvəl] [ɒv] [ˈtrænzvɜːs] [vaɪˈbreɪʃənz] [wɪʧ] [ˈtrævl] [mɔː] [ˈsləʊli] [ænd] [əˈraɪv] [ˈsɛvrəl] [ˈmɪnɪts] [ˈɑːftə] [ðə] [fɜːst]. [ðiːz] [tuː] [hæv] [ˈtrævld] [θruː] [ði] [ɜːθ]. [ɪt] [wɒz] [frɒm] [ðə] [ˈstʌdi] [ɒv] [ðiːz] [ðæt] [səʊ] [mʌʧ] [wɒz] [lɜːnt] [əˈbaʊt] [ði] [ɪnˈtɪərɪər] [ɒv] [ði] [ɜːθ]. [ðə] [θɜːd], [ɔː] [meɪn] [weɪv], [ɪz] [ðə] [ˈsləʊɪst] [ænd] [hæz] [ˈtrævld] [raʊnd] [ði] [ɜːθ] [θruː] [ðə] [ˈsɜːfɪs] [rɒks].
任务配置：
L0+L4
知识笔记 ：
练习感悟：
9.16
今天是课文最后一部分，比较短。今天的单词主要注意英美音的区别。特别注意record，在作名词和动词时，元音的发音和单词重音位置区别比较大。
简书到9.28才能恢复更新，这是后来补的。
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