伊卡莱姆的ScalersTalk第四轮新概念朗读持续力训练Day

练习材料：

Lesson20-1  Snake poison

How it came about that snakes manufactured poison is a mystery. Over the periods their saliva,a mild, digestive juice like our own, was converted into a poison that defies analysis even today. It was not forced upon them by the survival competition; they could have caught and lived on prey without using poison, just as the thousands of non-poisonous snakes still do. Poison to a snake is merely a luxury; it enables it to get its food with very little effort, no more effort than one bite. And why only snakes? Cats, for instance, would be greatly helped; no running fights with large, fierce rats or tussles with grown rabbits -- just a bite and no more effort needed.

应用配置：L0+L4

知识笔记： saliva/səˈlaɪvə    digestive/daɪˈʤɛstɪv    converted/kənˈvɜrtɪd    analysis/əˈnæləsəs

练习感悟：用时48分。卡在几个单词上面，重复多遍，最终完成。得心平气和，不能操之过急。