朗文英语听说教程一(2)

听说考试

Unit 2 New kind of food

P: china is doing research on genetically modified foods and is considering it.

S：I heard that US is for using G.M. foods, but Europe is against it .

P：I see, oh right,

S：So what do you think?

P：I think it`s a great ideal have GM foods.

S：oh,Do you think human can benefit from GM foods?

P：1 may fewer pesticide than normal food example corn will kill the insects that eat the plant

2 grow better than normal plants example strawberry grow in cold weather

3.stay fresh longer after they are harvest example tomato stays fresh for two months S：I don`t think so，I am worried more that there haven't been enough tests on genetically modified foods, that there might be side effects that could lead to cancer, or could ruin the naturally life cycle of the plants.

1dominate other wild plants in the environment causing other plants to die 2hurt the insects and animal in the environment corn kill the butterflies

3harmful to the people who consume the food put the genes from animals into plant such as that scientists took a gene from a kind of fish – a gene help the fish live in cold water

P：Uh,definitely,I think there is lots of resons to be concerened.

S：then scientists are going to have to continue with the research.

P：the fact is the population is growing and these people are going to have to eat food,so if GM foods can help people to eat and survive and for the human population to survive.As we know, in biology, cloning is the process of producing similar population of genetically identical individuals that occurs unnaturally.

S：when organism such as bacteria insects or plants reproduce asexually, cloning in biotechnology refers to processes to create copies of DNA fragments, cell or organisms. 1pros reproductive cloning 、 organ replacement 、genetic research 2cons lack of diversity 、 faster aging 、security

P： In short, there are both advantages and disadvantages about GM food