练习材料：

Lesson 42-3     Recording an earthquake

Why does a personstanding in a bus or train tend to fall when a sudden start is made? It isbecause his feet move on , but his head stays still. A simple experiment willhelp us a little further. Tie a heavy weight at the end of a long piece ofstring. With the hand held high in the air, hold the string so that the weightnearly touches the ground. Now move the hand to and fro and around but not upand down. It will be found that the weight moves but slightly or not at all.Imagine a pen attached to the weight in such a way that its points rests upon apiece of paper on the floor. Imagine an earthquake shock shaking the floor, thepaper, you and your hand. In the midst of all this movement, the weight and thepen would be still.

rɪˈkɔːdɪŋ ən ˈɜːθkweɪk

waɪ dʌz ə ˈpɜːsᵊn

ˈstændɪŋ ɪn ə bʌs ɔː treɪn tɛnd tuː fɔːl wɛn ə ˈsʌdᵊn stɑːt ɪz meɪd? ɪt ɪz bɪˈkɒz hɪz fiːt muːv ɒn ,

bʌt hɪz hɛd steɪz stɪl. ə ˈsɪmpᵊl ɪkˈspɛrɪmənt wɪl hɛlp ʌs ə ˈlɪtᵊl ˈfɜːðə. taɪ

ə ˈhɛvi weɪt æt ði ɛnd ɒv ə lɒŋ piːs ɒv strɪŋ. wɪð ðə hænd hɛld haɪ ɪn ði eə,həʊld

ðə strɪŋ səʊ ðæt ðə weɪt ˈnɪəli ˈtʌʧɪz ðə ɡraʊnd. naʊ muːv ðə hænd tuː ænd frəʊ ænd əˈraʊnd bʌt nɒtʌp ænd daʊn. ɪt wɪl biː faʊnd ðæt ðə weɪt muːvz bʌt ˈslaɪtli ɔː nɒt æt ɔːl. ɪˈmæʤɪnə pɛn əˈtæʧt tuː ðə weɪt ɪn sʌʧ ə weɪ ðæt ɪts pɔɪnts rɛsts əˈpɒn ə piːs ɒv ˈpeɪpərɒn ðə flɔː. ɪˈmæʤɪn ən ˈɜːθkweɪk ʃɒk ˈʃeɪkɪŋ ðə flɔː, ðə ˈpeɪpə, juː ænd jɔːhænd. ɪn ðə mɪdst ɒv ɔːl ðɪs ˈmuːvmənt, ðə weɪt ænd ðə pɛn wʊd biː stɪl.

任务配置：L0 + L4

知识笔记：

单词：1、to and fro：来回地，往复地，2、把……固定，和……在一起，3、midst：中间，4、still：仍然，静止，还是

音标：

练习感悟：居然再次录一遍就达标了，特别爽。虽然这篇文章生词不多，但是要读得流畅，还是没那么容易的。