Unit 3 Science and nature Reading课件 2020-2021学年牛津高中英语必修五

M5 U3 Science and nature Warming up Science Great inventions… Achievements in biotechnology Hybrid(杂交） rice GM technology Gene recombination Cloning Achievements in biotechnology Cloning is one of the more forward-looking technologies. Welcome to the unit How much do you know about Dolly? 1. What else can cloning technology be used for? 2.What are the potential problems of cloning? 3. What are the procedures of cloning Dolly? Cloning technology helps make drugs for human use, and increases the reproductive capacity of livestock as well as helps repopulate endangered species. It may have a tendency to age faster than natural born animals. 1.provide 2. take out of 4. divide and grow into 5. put into 6. deliver Cloning remove 3.combine More cloned animals Cc was created using a cell from an adult cat in Dec. 2002 in USA. She was not the exact copy of her clone-mother because they grew up in different surroundings, though they shared the same genes. These cloned pigs were born on Christm