研究生英语演讲比赛_研究生英语演讲比赛稿

演讲稿 时间:2020-02-28 08:56:14 收藏本文下载本文
【www.daodoc.com - 演讲稿】

研究生英语演讲比赛由刀豆文库小编整理,希望给你工作、学习、生活带来方便,猜你可能喜欢“研究生英语演讲比赛稿”。

GMO

GMO is to modify, to fix, to splice, to recombine the genes for new organisms or much adoptable species.The technology of GMO is mainly applied in food supplies, such as vegetables, crops and animals, and medical care.The positive side of GMO is evident.In the agriculture field, GMO foods can increase crop production, food quality and the diversity of species, for instance, more drought-resistant plants.And in the medical field, it could produce special elements, as some proteins, and even organs to treat some certain diseases.However, the negative side of GMO is uncertain.It may do harm to some insects and human body.It may also affect the growth of the surrounding plants and animals, and even may cause biological pollution and destroy the local ecosystem.By the end of 2013, the GMO plantation areas were expanded to 170 million hectares in the world and there are about 4 million hectares in China.And whether GMO is safe, there is no certain evidence.The maturity and benefits of genetic technology can never be justifiable for its wide application.So in my part, we can never be too careful in the spreading of GMO.

下载研究生英语演讲比赛word格式文档
下载研究生英语演讲比赛.doc
将本文档下载到自己电脑,方便修改和收藏。
点此处下载文档

文档为doc格式

    热门文章
      整站推荐
        点击下载本文