(共16张PPT)
Biodiversity
Activity 5
Listen to the podcast and choose the statements that are made.
1 Biodiversity is important.
2 Bacteria are always harmful to humans.
3 Some species of bacteria are used in food production.
4 Many species of bacteria recycle dead organic matter.
5 Our immune systems are able to fight off all germs.
be harmful to对...有害
fight off 击退
Activity 6 Listen again and complete the fact sheet.
thirty trillion
thirty-nine trillion
made up of cells
bricks that are used to build houses
help with digestion
break down
Using language
听力原文
Using language
Do you know about......
Have you heard of ......
Activity 7 Complete the boxes with the expressions from the podcast.
By the way......
Actually......
In fact,......
Speaking of which,…
Checking background knowledge
Adding information
What species are mentioned and what is special about them
Two species are mentioned: the blue whale and the water bear.
The blue whale is the largest animal species on Earth, which can grow up to almost 30 metres in length and weigh over 130,000 kilos.
The water bear is probably the toughest species, which can survive temperatures from 150 C to a below freezing -272 C.
Activity 8 Read the passage and answer the questions
The Galapagos Islands are renowned worldwide for their unique biodiversity. The Giant Tortoise Reserve on Santa Cruz 1_________ several species of giant tortoise that 2__________ the Galapagos Islands. The island is also home to the Charles Darwin Research Station, where 3____________ studies are carried out.
is home to
are native to
scientific
Complete the paragraphs with the correct form of the words and expressions in the box.
ancestor scientific be native to primitive habitat appearance be home to ecosystem
Mangroves are one of the coastal plants that grow on Isabela. They serve as the 4________________ for various birds and fish, and are very important to the 5________________.
habitats
ecosystem
Iguanas can be found on San Cristobal. They have a very special 6___________, with comb-like spines on their back.
appearance
primitive
ancestor
There is evidence that all the different iguanas have developed from more 7_____________ ones and share a common 8____________.
Activity 10 Look at the pictures of the species native to different regions of China. Talk about biodiversity in China using the words and expressions in this section.
重点词汇:
1.____________________n.特征,特性
2.___________________________v.减少
3.___________v.责怪,指责;把……归咎于
4.goat n._________ 5.primitive adj.________
6.giant adj.___________7. tortoise n.__________ 8. 遍及全世界 adv._____________
characteristic
decline/ decrease/ reduce
blame
山羊
原始的
巨大的
陆龟
worldwide
II.重点短语:
1.be native to ___________________
2.in the end_________________
3.be home to __________________
4.by contrast_______________
5.up to __________
6.do research on________________
源于...的;原产于
最后,终于
是...的栖息地;是...的家园
相比之下
多达,忙于,胜任,由...决定
研究
II.重点短语:
7. be harmful to _______________
8. fight off_______
9.carry out________________
10.be blamed on ______________
11. in particular______
对...有害
击退
实施,执行
被归咎于
尤其,特别
反馈达标:
1. The old man was badly injured but was saved _______
the end.
2. He promised to us that he will carry________the plan
in spite of the difficulties.
3. In autumn and spring ,_______ contrast , stocks usually
rise.
4. Such water would not be native_______ the moon.
5. The surrounding forests are home_______ many birds
and animals.
in
out
by
to
to
反馈达标:
6.Scientists are confident that this climate change can be
blamed ________ human activities.
7. She likes fruit and lemons ______ particular.
8. Smoking is harmful ________ our health.
9. It is important to do research____________ the theory.
on
in
to
on