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Step 4 Summary (PPT17) Briefly summarize what has been taught and what is going to be taught next period. [Explanation] 考慮到本節(jié)課涉及的內(nèi)容雖然相對(duì)集中但是形式比較散,因此在課堂結(jié)束前作個(gè)小結(jié)幫助學(xué)生整理一下思路是很有必要的。 Step 2 Information about cloned food (PPT913) 1. Introduce the concept of cloned food by displaying some pictures: food from cloned animals. 2. Quiz about cloning. Listen and check. 3. Have you ever tried any cloned food? Do they taste better? Do they look better? If not, or if you are not very clear about that, we may do some reading for related information. 3. Ask s