By asking questions constantly , students can be familiar with the passage . Obviouly ,they can also practice their oral English and play an active in the class activities.

阅读课，读中活动

If you have the answer, please raise you hands.

You please, how do you know that? Ss answer.

Paula is a little girl, and Sally's a champanzee. How are they different from this article?Ss answer.

But do you know other differences? Do champanzees go to school?No, but people go. Other differences?  Ss answer.

We know some differences, but in this article, Paula and Sally have the same, do you think?Let's read and tell me in which para you can got it.Ss answer.How do you know that?read the sentence.Ss answer.

So we know Paula and Sally are similar? How are they simiar? Read para1and2 and match the sentence from the article, clear? Have you finished? No?Ok,go on. Ss answer.Which sentence,would you please read it.     5mins

Actually we know, S and P are similar in many ways. So what's the next question do you want to ask.Ss answer.Let's have a look,why are they similar? Please read the last para carefully and get the answer. Ss answer. Is she right? Because they have almost the same DNA, right?But what percent DNA is the same? Ss answer.But what is DNA?Ss answer. We are similar because we've got a similar DNA.

Which are actually decided by DNA?Open the file,and take out the paper, you're going to talk in groups, and use the sticker to tell you answer, clear? Would you please show your answer? Do you agree? Ss answer. 

We know these things are decided by DNA? But there's another thing, where do we get DNA? Ss answer. We get DNA from our parents,that's why we look so similar with our father and mother.