练习材料:
Lesson26-1 The past life of the earth
It is animals and plants which lived in or near water whose remains are most likely to be preserved, for one of the necessary conditions of preservationis quick burial, and it is only in the seas and rivers, and sometimes lakes, where mud andsilthave been continuously deposited, that bodies and the like can be rapidly covered over and preserved.
But even in the most favourable circumstances only a small fraction of the creatures that die are preserved in this way before decaysets in or, even more likely, before scavengers eat them. After all, all living creatures live by feeding on something else, whether it be plant or animal, dead or alive, and it is only by chance that such a fate is avoided.
应用配置:L0+L4
知识笔记:preservation/ burial/ silt/ deposited/ circumstances/ decay/ scavengers/
练习感悟:用时21分。段落不长,只录制了完成一遍,没有再调整错误的地方。
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