Unit 8 Is biotechnology our friend or enemy?

Lead in    

Task1   c a f d g b e 

Task2     GM crops stem cell genetic map cloning              

Basic listening    BCDAC 

Listening in Task 1  BAAAD 

Task 2 

1.Research    2.genes    3.journal    4.warn    5.productivity         6.grow     7.survival  

8.Plant breeders have already used preliminary information from the rice genome to create experimental strains of rice that better resist cold and pests  

9.The new map could better explain more than just rice. Rice shares a common ancestor with other cereal crops  

10.While significant progress has been made in the analysis of the rice genome, the mapping of the human genes is also making headway  

Task 3  CBDAD 

Let’s talk 

kitchens     opposed     labeled     completely     law      no way  

GM ingredients       choice       Tougher             any content  the public       fear        safer      naturally          cheap      decide  

Further listening  

Task 1    biotechnology       rejected         special labels  

  73 percent to 27 percent / 73% to 27%          a new type of tomato     against      save lives          improve the human condition  

  medicines       conventional foods   

Task 2    AABBA 

Task 3    DBACC

trees     native genes     black     onion     taste     poisonous       tested     toxic     fish     popular     bigger     food     normally     larger     threefold     genes     originally  

  different     risks     laboratory     environment

Unit test 8

CBDBD

yield    identify     central      abnormal      how    to                                       

signals

The most important potential application of human stem cells is perhaps the generation of cells and tissues

Stem cells, directed to differentiate into specific cell types, will offer a source of replacement cells and tissu

it may become possible to generate healthy heart muscle cells in the laboratory and then transplant those cells into patients with chronic heart disease

BDCAC

BDCAC  ABBAD