高中英语外研版 (2019)选择性必修 第二册Unit 6 Survival图片课件ppt

这是一份高中英语外研版 (2019)选择性必修 第二册Unit 6 Survival图片课件ppt，共36页。PPT课件主要包含了Predicting，Summary，Clues ， Summary等内容，欢迎下载使用。

Develping ideasPlan B: Life n Mars?Reading
At the end f the class, yu will be able t:1. find ut the reasns fr humans t live n Mars2. make crrect inferences and get the evidences3. retell the passage simply4. share pinins abut Mars after learning the passage
Talk abut smething abut Mars.
Mars is slightly mre than half the size f Earth, with crrespnding lwer gravity. The atmsphere there is really thin, 100 times thinner than n Earth and it’s nt breathable. It’s 96 percent carbn dixide. It’s really cld there and there is quite a range f temperature. A day n Mars is abut as lng as a day n Earth, plus abut 39 minutes.
Seasns and years are twice as lng as they are n Earth. Since the 1960s, Mars has been the subject f several unmanned explratin missins. Hwever, many f early missins failed. Mars is a lng way away, 1000 times farther away frm us than the mn.
Cmplete the quiz abut Mars.1) Mars is the ____ smallest planet in slar system. a. secnd b. third c. furth2) The surface f Mars is cvered in _____. a. rcks b. water c. grass
3) The average recrded temperature n Mars is___. a. 40℃ b. 2℃ c. -63℃4) One day n Mars is abut ___ lng. a. 18 hurs b. 24 hurs c. 37 hurs
Predict the main idea accrding t the title and the pictures.
Reading fr general idea
Read the passage t answer the questins.1. Why d peple make Plan B?2. What is Plan B?3. Is it easy fr us t live n Mars?4. What shuld we d nw?
Checking the answers
1. Why d peple make Plan B?2. What is Plan B?
Envirnmental prblems have taken ver as the greatest risk t life n Earth (paragraph 1).
One ptin is t explre ther planets t see if we culd live n them. The mst likely chice is Mars (paragraph 2).
3. Is it easy fr us t live n Mars?
It is nt easy because it wuld take mnths t reach Mars, travelling thrugh dangerus slar radiatin. Even if the first settlers d reach Mars safely, they may nt be able t return t Earth. Staying alive will be a daily challenge (paragraph 4).
4. What shuld we d nw?
We need t take much better care f ur wn planet until we are finally able t live n anther planet (paragraph 5).
Frm the predictin and the infrmatin abve, we knw that Plan B is t explre Mars t see if we might live n it ne day.
Reading fr specific infrmatin
Read t find ut the detailed infrmatin abut the reasns why peple might live n Mars.
1. Mars is relatively clse t Earth.
2. Mars has an envirnment less hstile than that f ther planets.
The pssible answers:
3. Our interest in Martian explratin is greater than befre.
4. Since 1960s, we have been sending unmanned spacecraft t Mars. Our prbes have rbited the planet, sending back valuable data and stunning images. Our rbts have explred the Martian surface, testing the sil and searching fr resurces, water and signs f life.
5. Encuraged by discveries ver the years, space agencies f varius cuntries are planning manned missins t Mars that culd take place within the next 25 years.
6. Mre recently, scientists have succeeded in grwing a variety f plants in an envirnment similar t that n Mars.
The evidences that the natural gegraphical cnditins f Mars and ur interest, effrts and gain abut Mars are clear t us that ne day humans might live n Mars, which wuld be the mst inspiring.
Chse the magazine in which yu wuld mst likely find the passage and give yur reasns.
1. The Traveller2. All Abut Space3. Envirnmental Cncerns4. Bilgy fr Fun
1. The Traveller: fcuses n the persn wh travels, what he sees, what he des r hw he feels.
The characteristic f each magazine:
2. All Abut Space: fcuses n the secret f the uter space, shwing varius fascinating natural phenmena.
3. Envirnmental Cncerns: fcuses n varius envirnmental prblems, which usually draws peple’s great cncern.
4. Bilgy fr Fun: fcuses n studies abut life and living rganisms fr fun, including their physical structure and chemical prcesses.
By reading the passage, we knw that tday envirnmental prblems have taken ver as the greatest risk t life n Earth (paragraph 1). Scientific research shws that the planet Earth is getting warmer (paragraph 5). All the clues tell us the passage is mst likely t be fund in the magazine — Envirnmental Cncerns.
Chse the statements that can be inferred frm the passage.
1. Humans have yet nt visited Mars.2. Peple want t g t Mars n hliday.3. There are plants grwing n Mars.
4. The greatest risk t life n Earth used t be nuclear missiles.5. One day, humans will have t g and live n anther planet.6. Our Plan A includes develping renewable energy resurces.7. The Bisphere 2 experiment ended in failure.
What is the inferred infrmatin?
Inferred infrmatin refers t the pinins r cnclusins that are nt directly stated within the given infrmatin. Instead, the cntext, the headings and pictures ften help us make educated guesses abut a text.
Space agencies f varius cuntries are planning manned missins t Mars that culd take place within the next 25 years (paragraph 2).
S number 1 “Humans have yet nt visited Mars” can be inferred.
In the 1960s and 1970s, the greatest fear was that the human race, and pssibly all advanced life frms n the planet, culd be wiped ut by nuclear missiles, just at the push f a buttn (paragraph 1).
S number 4 “The greatest risk t life n Earth used t be nuclear missiles” can be inferred.
Scientists are thinking f ways t lwer this risk, such as replacing cal and il with frms f renewable energy (paragraph 1).
S number 6 “Our Plan A includes develping renewable energy resurces” can be inferred.
As early as the 1980s, scientists were building Bisphere 2 in the Arizna desert. Althugh the tw-year experiment was nt a success (paragraph 4).
S number 7 “The Bisphere 2 experiment ended in failure” can be inferred.
Retell the text accrding t the clues f why humans might live n Mars.Yu can add mre infrmatin frm the passage if necessary.
Retelling
Think abut the fllwing questins and share yur pinins.1) Which is better, t live n Mars r t slve Earth’s prblems?2) Wuld yu like t be ne f the first peple t live n Mars? Why r why nt?
Thinking and Sharing
In my pinin, t slve Earth’s prblems is better. On the ne hand, right nw, it’s the nly ne we have. On the ther hand, the Earth’s change is being caused by human activity and is having a terrible effect n the bisphere, s it’s ur duty t prtect it and slve the prblems.
1) Which is better, t live n Mars r t slve Earth’s prblems?
I wuld like t be ne f the first peple t live n Mars, which is a great challenge fr me. I am willing t explre better and mre suitable place fr ur humans.
2) Wuld yu like t be ne f the first peple t live n Mars? Why r why nt?
The passage mainly tells us that the planet Earth is getting warmer and warmer, and nw ur envirnmental prblems have taken ver as the greatest risk t life n Earth. Explring Mars is the mst likely chice due t its natural gegraphical cnditins. Althugh we have been making effrts, fr nw, human settlement f Mars is still decades away. We need t take much better care f the planet Earth.We als need t make greater effrts t realize ur dream.