练习材料：

NCE--第四册

Lesson 42-4   Recording an earthquake

But as the paper moved from side to side under the pen point, its movement would be recorded in ink upon its surface. It was upon this principle that the first instruments were made, but the paper was wrapped round a drum which rotated slowly. As long as all was still, the pen drew a straight line, but while the drum was being shaken, the line that the pen was drawing wriggled from side to side. The apparatus thus described, however, records only the horizontal component of the wave movement, which is, in fact, much more complicated. If we could actually see the path described by a particle, such as a sand grain in the rock, it would be more like that of a bluebottle buzzing round the room;

[bʌt] [æz] [ðə] [ˈpeɪpə] [muːvd] [frɒm] [saɪd] [tuː] [saɪd] [ˈʌndə] [ðə] [pɛn] [pɔɪnt], [ɪts] [ˈmuːvmənt] [wʊd] [biː] [rɪˈkɔːdɪd] [ɪn] [ɪŋk] [əˈpɒn] [ɪts] [ˈsɜːfɪs]. [ɪt] [wɒz] [əˈpɒn] [ðɪs] [ˈprɪnsəpl] [ðæt] [ðə] [fɜːst] [ˈɪnstrʊmənts] [wɜː] [meɪd], [bʌt] [ðə] [ˈpeɪpə] [wɒz] [ræpt] [raʊnd] [ə] [drʌm] [wɪʧ] [rəʊˈteɪtɪd] [ˈsləʊli]. [æz] [lɒŋ] [æz] [ɔːl] [wɒz] [stɪl], [ðə] [pɛn] [druː] [ə] [streɪt] [laɪn], [bʌt] [waɪl] [ðə] [drʌm] [wɒz] [ˈbiːɪŋ] [ˈʃeɪkən], [ðə] [laɪn] [ðæt] [ðə] [pɛn] [wɒz] [ˈdrɔːɪŋ] [ˈrɪgld] [frɒm] [saɪd] [tuː] [saɪd]. [ði] [ˌæpəˈreɪtəs] [ðʌs] [dɪsˈkraɪbd], [haʊˈɛvə], [ˈrɛkɔːdz] [ˈəʊnli] [ðə] [ˌhɒrɪˈzɒntl] [kəmˈpəʊnənt] [ɒv] [ðə] [weɪv] [ˈmuːvmənt], [wɪʧ] [ɪz], [ɪn] [fækt], [mʌʧ] [mɔː] [ˈkɒmplɪkeɪtɪd]. [ɪf] [wiː] [kʊd] [ˈækʧʊəli] [siː] [ðə] [pɑːθ] [dɪsˈkraɪbd] [baɪ] [ə] [ˈpɑːtɪkl], [sʌʧ] [æz] [ə] [sænd] [greɪn] [ɪn] [ðə] [rɒk], [ɪt] [wʊd] [biː] [mɔː] [laɪk] [ðæt] [ɒv] [ə] [ˈbluːˌbɒtl] [ˈbʌzɪŋ] [raʊnd] [ðə] [ruːm];

任务配置：

L0+L4

知识笔记 ：

练习感悟：

9.15

今天是课文第四部分，比较短。要注意课文中的连词和介词。注意thus，在文中作副词，表示“如此，这样，以此方式”。

简书到9.28才能恢复更新，这是后来补的。