英语学习20170627
慢速 大声 夸张
小处： 卷舌,d/t ,s/z,w/v不可懈怠
课文原文(dictated on 20170623)
Lesson Twenty Part one Snake poison
What are the two differnt ways in which snake posion acts?
In fact, it would be an assistance to all carnivores, though it would be two-edged weapon when they fought each other. But of the vertebrates, unpredictable nature selected only snakes, and one lizard. One wonders also why nature, with some snakes concoted poison of such an extreme potency. In the conversion of saliva into poison, one may supposed a fixed process took place , it did not. Some snakes manufactured a poison different in every respect from that of others, as different as arsenic from strcychnine and having diferent effects. One poison acts on the nerves, the other on the blood. The makers of the nerve poison included the mambas and the cobras and their venom is called neurotoxic.
生词记录
| 单词/词组 | 释义 |
|---|---|
| carnivore | 食肉动物 |
| vertebrate | 脊椎动物 |
| lizard | 蜥蜴 |
| concoted | 调制的 |
| arsenic | 砒霜 |
| strcychnine | 马钱子碱 |
| mambas | 树眼镜蛇 |
| cobra | 眼镜蛇 |
| venom | 毒液 |
| neurotoxic | 神经毒素 |
练习记录
- arsenic is 连读
- venom is 连读
点评记录
None
自我总结
- 无他，唯熟尔.
时长累计
9.48