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

课件29张PPT。英语冀教版九年级上Lesson 29DNA---The Story of YouChina’s Most Famous “Farmer”Professor Sir Ian Wilmut DNA DNA deoxyribonucleic acid? [di:'?ksi,raib?unju:'kli:ik]
What do you know about DNA?
What can scientists do with DNA?Task 1 Skim and Answer（略读 跳读）DNA is the blueprint of life.
What’s the topic sentence of this passage?Task 2 Scan , answer and translate 1. What is a blueprint?
A blueprint is a drawing that shows how to put
a house together with many different parts.
2. Which is more complex, building a living thing or
building a house?
Building a living thing.
3. Does every living thing have its own unique DNA?
No, except for some twins.
4. Whose DNA is related to you?
People who are related to us. For example, our
parents , grandparents , grandsons and granddaughters.
5. Your DNA has billions of instructions that explain
why you are the way you are.(翻译)


['blu?pr?nt]['k?mpleks] [ju?'ni?k] [tw?n] [?n'str?k?(?)n]
DNA
(fantastic) Read aloud and then use the key words to
describe DNA.DNA (fantastic) uniqueExcept for some twins, every living thing
has its own unique DNA.1.Your homework is quite good except
for a few spelling mistakes.
2.Everyone is here except Tom.
DNA (fantastic)health uniqueSome health problems can be caused by problems in your DNA.DNA
(fantastic)changehealth uniqueIn the future, scientists might be able to change your DNA.DNA
(fantastic) uniquehealth changecopyThere are copies of your DNA in every part of your
body.
DNA (fantastic) health uniquerelatedchangecopyFrom your DNA, scientists can identify not only you, but also people who are related to you. The matter relates to Jack.
Jack _________ the matter.
Jack is the person________
the matter.
Not only I but also Tom ______(enjoy)fishing.
is related torelated toenjoys1. Your composition is quite good ____________ a
few spelling mistakes.
2. ____________ the young ____________ the old
like pop music.
3 . You can have any of the cakes ____________
this one, for it’s for Cindy.
4. ____________, women live longer than men.
5. He is the person ____________ to my family.
6. I don’t think wealth ____________ happinessFill in the blanks with the phrases in the box. in general， except for， not only… but also
related to， except， be related toexcept forNot onlybut alsoexcept In general related tois related to One student reads the sentence, the other student tells us true or false as soon as possible.Let's play a game in pairs!3211. Your hair has the same DNA as your blood.
2. Twins have the same DNA.
3. Everyone has his own unique DNA.
4. You have the same DNA as your parents.
5. It’s impossible to change your DNA.
6. Some problems in your DNA can cause
some health problems.
7. You have part of your grandparents’ DNA.
Let's enjoy!“blue tomato” GM cornGolden Rice grains GM Food Think about it!Is 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, …(kind/delicious)…
Second, …(production/ feed)…
Third,…(price)…
On the other hand, it also has some disadvantages….(not natural…/do harm to)..
In my opinion,…
Is it good or bad to clone people? Why?
1.Scientific discoveries are making
our lives better and better.
2.Everything in the world are amazing.
Love science, love animals, love all
the people around you, love nature.
3.Study hard and make a contribution
to our society. As the saying goes,
Roses given, fragrance in hand.What can we learn from the text?11.Write a
composition.
Topic:
Is it good or bad to change the DNA of food? 23Doing the tasksHomeworkFinish the activity books.Retell the article.Thanks!