缩写这篇英语课文,100词左右

缩写这篇英语课文,100词左右
缩写这篇英语课文,100词左右
 

缩写这篇英语课文,100词左右
In recent years,there has been great progress in the study of genetics.While many people are excited about these new technologiies,others are frightened by them.This is especially true of the genetically modified (GM)food.There are two ways in which a olant or an animal can be genetically modified,inserting new material into its DNA or taking material from it.
The aim of GM research is to produce healthier food.But many questions have been raised about GM food because people can not make sure if it is safe to eat or if it is safe for the environment.Thus many countries have hesitated to give permission for the production of GM foods.