Unit 5 Look into Science Lesson 29 DNA — The Story of You 课件 （共27张PPT）

课件27张PPT。Lesson 29DNA---The story of youLet’ s enjoy some photos!Let’s talk!1.Why do you look like this?
Because of DNA.
2.What is DNA?
DNA is the blueprint of life.
3.What is a blueprint?
(Paragraph 1)
4.Which is more complex, building a living thing or building a house?
(Paragraph 2)
DNA is fantastic! Do you know them? ---They are twins.They are twins, too.Except for some twins, every living thing has its own unique DNA. Some health problems can be cause by problems in your DNA. Scientists can look for these problems and , sometimes , help you before you become sick . In the future , scientists might be able to change your DNA. There are copies of your DNA in every part of your body.For example, your finger has the same DNA as your hair.
Who is related to you ?Read and Know! Your DNA comes from your parents.
You have your own unique DNA, but it repeats patterns from your parents’ DNA. From your DNA, scientists can identify not only you ,but also people who are related to you , Your parents and grandparents are related to you , and you have their DNA. When you have a grandson or granddaughter, he or she will have your DNA.
In a word. You DNA has billions of instructions that explain that why you are the way you are. It’s one of the most amazing things on the earth!
-----This is the story of you
It’s time to practice!完成句子。（中考链接） 1. 一般来说，女人比男人活得更长。
____________, women are live longer than men.
2. 你的作文相当好，除了一些拼写错误外。
Your composition is quite good ____________ a
few spelling mistakes.
3.现如今，不管是年轻人还是老年人都喜欢流行音乐。
____________ the young ____________ the old
like pop music nowadays.
4.我认为财富与幸福没关系。
I don’t think wealth ____________ happiness.
5.尽管还留下许多困难，我们可以克服的。
_______________ many difficulties remain, we can overcome them. In generalexcept forNot onlybut alsois related toEven if/thoughIs it a good idea to change the DNA of the food we eat?good/badkinddeliciousproductionfeed price…healthy
natural or
notbe good for…
be bad for…
more kinds of…
more delicious than beforeincrease the production
feed more peoplecheaper
unnatural
do harm to… Is it a good idea to change the DNA of the food we eat? On one hand, it is good to change the DNA
of the food we eat. First, ________________ _______________________ Second,______ ______________ Third,_________________ _____________________________.
On the other hand, it also has some disadvantages.________________________.
In my opinion,______________________ ___________________________________ .

Scientific discoveries are making our lives better and better.
Inventions and discoveries have changed the modern world.
Everything has two sides.
It’s never too late to learn.
Nothing is too difficult, if you put your heart into it.
Teacher Motto11.Write the
composition
down in your
book.
2Read this article
at least three
times. 3Finish “Let’s do it” NO.3.Doing the tasksHomeworkTHANKS