ning the word ‘high-speed maglev train’ 2. let Ss work in pairs, and discuss the advantages and disadvantages of the cloning, nuclear energy , computers, space flights. 2. That information can help students get ideas for advantages and disadvantages. Cloning: people that look the same; making people and animals which are in danger in the world; help people who lost an ear/ eye/leg… Nuclear energy: doesn’t pollute the environment; very dangerous waste; make all the electricity society needs. Space flights: understand the outer space; very expensive; shows how far a country has developed. Step IV Practice Finish the exercises “Listening” “Talking” in Workbook Homework Finish off the exercise “Practising” in the Workbook.（教案和教学设计）课件高一英语下：Unit 16 Scientists at work教案1教育资源 第22课时：用计算器进行数的简单运算
