我们知道雅思阅读的文章主要是从国外知名报刊杂志上获取的,然后经过一系列的改编,最终成为考题。那前程百利雅思考试小编就在这些相关网站上给大家找了本文编辑人类胚胎基因,大家可以轻松随意浏览一番。
Editing human embryos is genetics' new battleground
新战场-编辑人类胚胎基因
文章题材:科技类
我们先来学习一些有关这个话题的词汇:
1. embryo:n.胚胎,初期
2. nucleus:n.核心,细胞核
3. moratorium:n.暂停,中止
4. disruptive:混乱的,分裂的
5. manipulate:vt.操纵,操作,篡改
6. controversy:争论;辩论
7. genome:基因组
8. heritable:可继承的,可遗传的
9. submit:v.递交,主张
10. blastocyst:囊胚;胚包
11. sequence:n.序列,排序
12. germline:n.种系
13. mutation:突变,变化
14. dementia:n.痴呆症
15. fitter:胜任的 ,适当的
16. tweak:v.捏,扭,对……稍作调整
文章重点段落摘要:红色字体部分是长难句,有相应的句子结构分析和译文哦。黄色背景表示重点词汇哦。
1. Replacing faulty genes in early human embryos and germ cells is within our grasp. Such changes affect DNA in the nucleus and so would be heritable; ultimately, they could be used to make a genetically modified baby.
译文:在人类胚胎早期替换有缺陷的基因,这样生殖细胞就在我们掌握之中。这些变化影响核DNA,所以会被遗传。最终,他们可以用来制造基因改造了的婴儿。
2. But based on what's been done in monkeys, the work probably involved fertilising donated human eggs by injecting a sperm and then, while the fertilised eggs were still at the one-cell stage, injecting various RNAs. These RNAs cut DNA at specific sites, tricking our natural DNA repair system into destroying or replacing one or more genes – a technique known as gene editing. The embryos would then have been allowed to develop for a few days until they reached the blastocyst stage – containing a few hundred cells – before being destroyed.
我们先来认识一些单词:
1. fertilising:vt.使受精
2. human eggs:人类卵子
3. sperm:精子
4. RNA:核糖核酸
句子结构分析:这个句子的主语是the work,谓语是involved,宾语是fertilising donated human eggs和and then, injecting various RNAs. While引导条件状语从句,based on做状语,后面的what引导宾语从句。
译文:但是根据对猴子的试验过程,这个基因编辑工作可能包括通过对捐赠的人类卵子注入精子使其受精,然后,在这个受精卵还是一个细胞的阶段,注入各种各样的核糖核酸。
3. We could probably modify people to make them resistant to all kinds of infections and diseases, and stronger and fitter. But when it comes to the brain, it is hard to see how we could go beyond what evolution has created. We're nowhere near to being able to predict how tweaking various genes would affect intelligence – in fact, the brain is so complex that this may never be possible. And it would obviously be totally unethical to experiment by creating mutants.
我们先来认识一些单词:
1. predict:v.预测
2. tweak:vt. 扭曲
3. intelligence:n. 智力,情报工作
句子结构分析:本句是主系表结构,主语是We,系动词时are,表语是nowhere,
being able to作状语,how引导宾语从句,破折号表示转折,so…that…结构,如此……以至于……。
译文:我们还远远没有能力预测如何调整各种基因影响智力——事实上,大脑是如此复杂,这可能永远不会成为可能。
怎么样,亲爱的烤鸭们,是不是对非常先进的人类胚胎基因改造有了更多的了解,看完这篇小素材,你记住这些背景知识及背景词汇了么,还没记住的话,就在复习一遍吧。
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