練習材料：

NCE--第四冊

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;

[b?t] [?z] [e?] [?pe?p?] [mu?vd] [fr?m] [sa?d] [tu?] [sa?d] [??nd?] [e?] [p?n] [p??nt], [?ts] [?mu?vm?nt] [w?d] [bi?] [r??k??d?d] [?n] [??k] [??p?n] [?ts] [?s??f?s]. [?t] [w?z] [??p?n] [e?s] [?pr?ns?pl] [e?t] [e?] [f??st] [??nstr?m?nts] [w??] [me?d], [b?t] [e?] [?pe?p?] [w?z] [r?pt] [ra?nd] [?] [dr?m] [w??] [r???te?t?d] [?sl??li]. [?z] [l??] [?z] [??l] [w?z] [st?l], [e?] [p?n] [dru?] [?] [stre?t] [la?n], [b?t] [wa?l] [e?] [dr?m] [w?z] [?bi???] [??e?k?n], [e?] [la?n] [e?t] [e?] [p?n] [w?z] [?dr????] [?r?gld] [fr?m] [sa?d] [tu?] [sa?d]. [ei] [??p??re?t?s] [e?s] [d?s?kra?bd], [ha???v?], [?r?k??dz] [???nli] [e?] [?h?r??z?ntl] [k?m?p??n?nt] [?v] [e?] [we?v] [?mu?vm?nt], [w??] [?z], [?n] [f?kt], [m??] [m??] [?k?mpl?ke?t?d]. [?f] [wi?] [k?d] [??k???li] [si?] [e?] [pɑ?θ] [d?s?kra?bd] [ba?] [?] [?pɑ?t?kl], [s??] [?z] [?] [s?nd] [gre?n] [?n] [e?] [r?k], [?t] [w?d] [bi?] [m??] [la?k] [e?t] [?v] [?] [?blu??b?tl] [?b?z??] [ra?nd] [e?] [ru?m];

任務配置：

L0+L4

知識筆記 ：

練習感悟：

9.15

今天是課文第四部分，比較短。要注意課文中的連詞和介詞。注意thus，在文中作副詞，表示“如此，這樣，以此方式”。

簡書到9.28才能恢復更新，這是后來補的。