Unit 6 Survival Developing ideas 课件（共27张，内嵌视频） 外研版(2019)选择性必修第二册
文档属性
| 名称 | Unit 6 Survival Developing ideas 课件（共27张，内嵌视频） 外研版(2019)选择性必修第二册 |  | |
| 格式 | pptx | ||
| 文件大小 | 80.3MB | ||
| 资源类型 | 教案 | ||
| 版本资源 | 外研版（2019） | ||
| 科目 | 英语 | ||
| 更新时间 | 2025-10-08 07:40:26 | ||
图片预览
文档简介
(共27张PPT)
Unit 6 Survival
Plan B: Life on Mars
Learning objectives
In this class, you will
complete a quiz about Mars;
figure out the structure of the passage;
find out the detailed information in the passage;
Where is Mars How much do you know about Mars
1) Mars is the _____ smallest planet in the solar system.
a. second b. third c. fourth
2) The surface of Mars is covered in _____.
a. rocks b. water c. grass
a
a
3) The average recorded temperature on Mars is ______.
a. 40 ℃ b. 2 ℃ c. -63 ℃
4) One day on Mars is about ______ long.
a. 18 hours b. 24 hours c. 37 hours
c
b
Try to guess if you are not sure of the answers.
木土天海地金火水
minus sixty-three degrees Celsius
Why do we have Plan B for Earth
One option— Mars. Why
Difficulties of exploring Mars
Humans’ exploration related to Mars
Right now, Earth is the only home we have!
Paragraph 1
Paragraph 2
Paragraph 3
Paragraph 4
Paragraph 5
Activity 1 Work out the main idea of each paragraph.
Read for details.
Para. 1
In the 1960s and 1970s, the greatest fear was that the human race, and possibly all advanced life forms on the planet, could be wiped out by nuclear missiles, just at the push of a button. Today, however, environmental problems have taken over as the greatest risk to life on Earth. Scientists are thinking of ways to lower this risk, such as replacing coal and oil with forms of renewable energy. But they are also preparing for the worst: what can we do if the terrifying scenes in films such as The Day After Tomorrow happen in real life What is our Plan B for Earth
advance n. 前进，进步，进展 v. 前进，促进，提前
advanced adj. 高等的，先进的，高级的
make great advances in 在...取得巨大进步/进展
wipe out彻底摧毁；消灭
renewable energy 可再生能源
lower this risk 降低这种风险
at the push of a button 按下一个按钮 引申为”轻易地”
Read for details.
Para. 1
In the 1960s and 1970s, the greatest fear was that the human race, and possibly all advanced life forms on the planet, could be wiped out by nuclear missiles, just at the push of a button. Today, however, environmental problems have taken over as the greatest risk to life on Earth. Scientists are thinking of ways to lower this risk, such as replacing coal and oil with forms of renewable energy. But they are also preparing for the worst: what can we do if the terrifying scenes in films such as The Day After Tomorrow happen in real life What is our Plan B for Earth
在20世纪60年代和70年代，最大的恐惧是人类，可能还有地球上所有先进的生命形式，只要按一下按钮，就会被核导弹消灭。然而，今天，环境问题已经成为地球上生命的最大威胁。科学家们正在考虑降低这种风险的方法，比如用可再生能源取代煤炭和石油。但他们也在为最坏的情况做准备：如果《后天》等电影中的恐怖场景发生在现实生活中，我们该怎么办？我们对地球的B计划是什么？
Read for details.
Para. 1
Considering great risks to life on Earth, human's Plan B for Earth is put forward.
In the 1960s and 1970s, the greatest fear was that the human race, and possibly all advanced life forms on the planet, could be wiped out by nuclear missiles, just at the push of a button. Today, however, environmental problems have taken over as the greatest risk to life on Earth. Scientists are thinking of ways to lower this risk, such as replacing coal and oil with forms of renewable energy. But they are also preparing for the worst: what can we do if the terrifying scenes in films such as The Day After Tomorrow happen in real life What is our Plan B for Earth
Why do we have Plan B for Earth
fear
solution
Plan B
Let’s enjoy the film The Day After Tomorrow mentioned in para 1.
Para. 2
One option is to explore other planets to see if we could live on them. The most likely choice is Mars, which is relatively close to Earth and has an environment less hostile than that of other planets. Mars has fascinated people since ancient times, and today our interest in Martian exploration is greater than ever before. Films such as The Martian enjoy worldwide popularity. More governments and organisations are making efforts to educate the public on the Red Planet, for example, the Mars Desert Research Station in the Utah desert of the US and the Mars Village in North-west China’s Qinghai Province.
that用作替代词， 指代上文提到的名词
Martian exploration 火星探测 make efforts to do sth. 努力做某事
Para. 2
One option is to explore other planets to see if we could live on them. The most likely choice is Mars, which is relatively close to Earth and has an environment less hostile than that of other planets. Mars has fascinated people since ancient times, and today our interest in Martian exploration is greater than ever before. Films such as The Martian enjoy worldwide popularity. More governments and organisations are making efforts to educate the public on the Red Planet, for example, the Mars Desert Research Station in the Utah desert of the US and the Mars Village in North-west China’s Qinghai Province.
一种选择是探索其他行星，看看我们是否可以在它们上生活。最有可能的选择是火星，它离地球相对较近，环境也不像其他行星那么恶劣。自古以来，火星就吸引着人们，今天我们对火星探索的兴趣比以往任何时候都大。像《火星救援》这样的电影在全世界都很受欢迎。越来越多的政府和组织正在努力教育公众了解这颗红色星球，例如，美国犹他州沙漠的火星沙漠研究站和中国西北部青海省的火星村。
Para. 2
Humans choose to explore Mars to see if we coud live on it.
One option is to explore other planets to see if we could live on them. The most likely choice is Mars, which is relatively close to Earth and has an environment less hostile than that of other planets. Mars has fascinated people since ancient times, and today our interest in Martian exploration is greater than ever before. Films such as The Martian enjoy worldwide popularity. More governments and organisations are making efforts to educate the public on the Red Planet, for example, the Mars Desert Research Station in the Utah desert of the US and the Mars Village in North-west China’s Qinghai Province.
What’s Plan B
Why is Mars our Plan B
Let’s enjoy the film The Martian《火星救援》mentioned in para 2.
Para. 3
Since the 1960s, we have been sending unmanned spacecraft to Mars. Our probes have orbited the planet, sending back valuable data and stunning images. Our robots have explored the Martian surface, testing the soil and searching for resources, water and signs of life. Encouraged by discoveries over the years, space agencies of various countries are planning manned missions to Mars that could take place within the next twenty-five years.
unmanned spacecraft 无人驾驶宇宙飞船
manned spacecraft 载人宇宙飞船
manned missions 载人任务
stunning images 令人惊奇的图像
space agencies 航天局
take place 发生；举行
Para. 3
Since the 1960s, we have been sending unmanned spacecraft to Mars. Our probes have orbited the planet, sending back valuable data and stunning images. Our robots have explored the Martian surface, testing the soil and searching for resources, water and signs of life. Encouraged by discoveries over the years, space agencies of various countries are planning manned missions to Mars that could take place within the next twenty-five years.
自20世纪60年代以来，我们一直在向火星发射无人飞船。我们的探测器绕地球运行，发回了宝贵的数据和令人惊叹的图像。我们的机器人探索了火星表面，测试了土壤，寻找资源、水和生命迹象。受到多年来发现的鼓舞，各国的航天机构正在计划载人火星任务，这可能在未来25年内实现。
Para. 3
Humans have made efforts to land on Mars for researches.
Since the 1960s, we have been sending unmanned spacecraft to Mars. Our probes have orbited the planet, sending back valuable data and stunning images. Our robots have explored the Martian surface, testing the soil and searching for resources, water and signs of life. Encouraged by discoveries over the years, space agencies of various countries are planning manned missions to Mars that could take place within the next twenty-five years.
How do human beings explore the Mars
1
2
3
Para. 4
There is no doubt that humankind is drawn towards Mars, with dreams of making it our second home. However, sending people there will require all the skill, courage and intelligence of the human race. While the Moon can be reached within days, it would take months to reach Mars, travelling through dangerous solar radiation. And even if the first settlers do reach Mars safely, they may not be able to return to Earth – ever. Staying alive will be a daily challenge, but as proved by the Biosphere 2 experiment, not impossible. As early as the 1980s, scientists were building Biosphere 2 in the Arizona desert. It consisted of a closed space in which people, animals and plants could live together. The “closed” concept meant that the space was designed to function with its own oxygen, food and water, needing nothing from the outside world. Although the two-year experiment was not a success, it did provide us with a better understanding of how humans might be able to live on another planet. More recently, scientists have succeeded in growing a variety of plants in an environment similar to that on Mars. That definitely is a big step forward.
solar radiation太阳辐射 draw drew drawn 吸引
do/does/did＋动词原形：用于强调谓语
consist of =be made up of /be composed of 由...组成
consist in 在于，存在于
Para. 4
There is no doubt that humankind is drawn towards Mars, with dreams of making it our second home. However, sending people there will require all the skill, courage and intelligence of the human race. While the Moon can be reached within days, it would take months to reach Mars, travelling through dangerous solar radiation. And even if the first settlers do reach Mars safely, they may not be able to return to Earth – ever. Staying alive will be a daily challenge, but as proved by the Biosphere 2 experiment, not impossible. As early as the 1980s, scientists were building Biosphere 2 in the Arizona desert. It consisted of a closed space in which people, animals and plants could live together. The “closed” concept meant that the space was designed to function with its own oxygen, food and water, needing nothing from the outside world. Although the two-year experiment was not a success, it did provide us with a better understanding of how humans might be able to live on another planet. More recently, scientists have succeeded in growing a variety of plants in an environment similar to that on Mars. That definitely is a big step forward.
毫无疑问，人类被火星所吸引，梦想着把它变成我们的第二个家园。然而，把人送到那里需要人类所有的技能、勇气和智慧。虽然月球可以在几天内到达，但到达火星需要几个月的时间，要经过危险的太阳辐射。即使第一批移民安全抵达火星，他们也可能永远无法返回地球。活下来将是每天的挑战，但正如生物圈2号实验所证明的那样，并非不可能。早在20世纪80年代，科学家们就在亚利桑那州的沙漠中建造生物圈2号。它由一个封闭的空间组成，在这个空间里，人、动物和植物可以共同生活。“封闭”的概念意味着这个空间的功能是由它自己的氧气、食物和水来设计的，不需要来自外部世界的任何东西。虽然这个为期两年的实验并不成功，但它确实让我们更好地了解了人类如何能够在另一个星球上生活。最近，科学家们成功地在类似火星的环境中种植了多种植物。这绝对是向前迈出的一大步。
Para. 4
In order to make Mars a second home, humans have conducted experiments about the environments similar to that on Mars.
There is no doubt that humankind is drawn towards Mars, with dreams of making it our second home. However, sending people there will require all the skill, courage and intelligence of the human race. While the Moon can be reached within days,
it would take months to reach Mars, travelling through dangerous solar radiation. And even if the first settlers do reach Mars safely, they may not be able to return to Earth – ever. Staying alive will be a daily challenge, but as proved by the Biosphere 2 experiment, not impossible. As early as the 1980s, scientists were building Biosphere 2 in the Arizona desert. It consisted of a closed space in which people, animals and plants could live together. The “closed” concept meant that the space was designed to function with its own oxygen, food and water, needing nothing from the outside world. Although the two-year experiment was not a success, it did provide us with a better understanding of how humans might be able to live on another planet. More recently, scientists have succeeded in growing a variety of plants in an environment similar to that on Mars. That definitely is a big step forward.
What are the challenges of moving to Mars
1
2
3
4
Arizona desert
people
animals
plants
oxygen
food
water
a better understanding
Para. 5
For now, human settlement of Mars is still decades away. In the meantime, scientific research shows that the planet Earth is getting warmer. This change is being caused by human activity and is having a terrible effect on the biosphere. Until we are finally able to live on another planet, we need to take much better care of our own. Right now, it’s the only one we have!
in the meantime 在此期间，与此同时
have a(n)...effect on... 对……有……影响
expose v．使暴露(于险境);揭露;使曝光;使接触到…
expose...to... 使…暴露于…；使…接触…
be exposed to... 暴露于…
Para. 5
For now, human settlement of Mars is still decades away. In the meantime, scientific research shows that the planet Earth is getting warmer. This change is being caused by human activity and is having a terrible effect on the biosphere. Until we are finally able to live on another planet, we need to take much better care of our own. Right now, it’s the only one we have!
目前，人类在火星上定居还需要几十年的时间。与此同时，科学研究表明，地球正在变暖。这种变化是由人类活动引起的，并对生物圈产生了可怕的影响。在我们最终能够在另一个星球上生活之前，我们需要更好地照顾我们自己的星球。现在，这是我们唯一的选择！
Para. 5
Before human settlement of Mars, we should protect Earth better.
What should human beings do in the near future
For now, human settlement of Mars is still decades away. In the meantime, scientific research shows that the planet Earth is getting warmer. This change is being caused by human activity and is having a terrible effect on the biosphere. Until we are finally able to live on another planet, we need to take much better care of our own. Right now, it’s the only one we have!
For now, What can we do
Group discussion
So, we need to take much better care of our own planet—Earth.
1.Clear plate campaign
2.No plastic
(plastic bags, plastic straws)
3.Save water
4.No littering
5.Save electricity
6.Recycle&Reuse&Reduce
Summary
Human beings are faced with serious 1._____________(environment) problems, which lead scientists to consider moving to Mars 2._____ the environment is less hostile than 3.____ of other planets.Mars 4.______________(fascinate) people since ancient times and relevant movies also gain much 5.__________(popular)．Spacecraft and robots have been sent to explore Mars since the 1960s，encouraging more 6._________(country) to plan manned missions.There is no doubt that humankind 7.________(draw) towards Mars despite some challenges,8.___ human settlement of Mars is still decades away.We have to admit that 9.__________(protect) our earth is the most urgent step right now.We need to take much better care of 10.____(we) own planet.
environmental
where
that
has fascinated
popularity
countries
is drawn
but
protecting
our
Homework
据国内媒体“China daily”（中国日报）报道，中国航天科技公司公布载人登陆火星的计划，现招募首批火星居民。假设你是李华，对该计划很感兴趣，要写一封申请信。要求包括以下要点：
个人优势 （对火星的了解，性格，所具备的技能）
参加原因
希望获准
注意:
1. 字数80左右;
2. 可以适当增加细节，以使行文连贯
Unit 6 Survival
Plan B: Life on Mars
Learning objectives
In this class, you will
complete a quiz about Mars;
figure out the structure of the passage;
find out the detailed information in the passage;
Where is Mars How much do you know about Mars
1) Mars is the _____ smallest planet in the solar system.
a. second b. third c. fourth
2) The surface of Mars is covered in _____.
a. rocks b. water c. grass
a
a
3) The average recorded temperature on Mars is ______.
a. 40 ℃ b. 2 ℃ c. -63 ℃
4) One day on Mars is about ______ long.
a. 18 hours b. 24 hours c. 37 hours
c
b
Try to guess if you are not sure of the answers.
木土天海地金火水
minus sixty-three degrees Celsius
Why do we have Plan B for Earth
One option— Mars. Why
Difficulties of exploring Mars
Humans’ exploration related to Mars
Right now, Earth is the only home we have!
Paragraph 1
Paragraph 2
Paragraph 3
Paragraph 4
Paragraph 5
Activity 1 Work out the main idea of each paragraph.
Read for details.
Para. 1
In the 1960s and 1970s, the greatest fear was that the human race, and possibly all advanced life forms on the planet, could be wiped out by nuclear missiles, just at the push of a button. Today, however, environmental problems have taken over as the greatest risk to life on Earth. Scientists are thinking of ways to lower this risk, such as replacing coal and oil with forms of renewable energy. But they are also preparing for the worst: what can we do if the terrifying scenes in films such as The Day After Tomorrow happen in real life What is our Plan B for Earth
advance n. 前进，进步，进展 v. 前进，促进，提前
advanced adj. 高等的，先进的，高级的
make great advances in 在...取得巨大进步/进展
wipe out彻底摧毁；消灭
renewable energy 可再生能源
lower this risk 降低这种风险
at the push of a button 按下一个按钮 引申为”轻易地”
Read for details.
Para. 1
In the 1960s and 1970s, the greatest fear was that the human race, and possibly all advanced life forms on the planet, could be wiped out by nuclear missiles, just at the push of a button. Today, however, environmental problems have taken over as the greatest risk to life on Earth. Scientists are thinking of ways to lower this risk, such as replacing coal and oil with forms of renewable energy. But they are also preparing for the worst: what can we do if the terrifying scenes in films such as The Day After Tomorrow happen in real life What is our Plan B for Earth
在20世纪60年代和70年代，最大的恐惧是人类，可能还有地球上所有先进的生命形式，只要按一下按钮，就会被核导弹消灭。然而，今天，环境问题已经成为地球上生命的最大威胁。科学家们正在考虑降低这种风险的方法，比如用可再生能源取代煤炭和石油。但他们也在为最坏的情况做准备：如果《后天》等电影中的恐怖场景发生在现实生活中，我们该怎么办？我们对地球的B计划是什么？
Read for details.
Para. 1
Considering great risks to life on Earth, human's Plan B for Earth is put forward.
In the 1960s and 1970s, the greatest fear was that the human race, and possibly all advanced life forms on the planet, could be wiped out by nuclear missiles, just at the push of a button. Today, however, environmental problems have taken over as the greatest risk to life on Earth. Scientists are thinking of ways to lower this risk, such as replacing coal and oil with forms of renewable energy. But they are also preparing for the worst: what can we do if the terrifying scenes in films such as The Day After Tomorrow happen in real life What is our Plan B for Earth
Why do we have Plan B for Earth
fear
solution
Plan B
Let’s enjoy the film The Day After Tomorrow mentioned in para 1.
Para. 2
One option is to explore other planets to see if we could live on them. The most likely choice is Mars, which is relatively close to Earth and has an environment less hostile than that of other planets. Mars has fascinated people since ancient times, and today our interest in Martian exploration is greater than ever before. Films such as The Martian enjoy worldwide popularity. More governments and organisations are making efforts to educate the public on the Red Planet, for example, the Mars Desert Research Station in the Utah desert of the US and the Mars Village in North-west China’s Qinghai Province.
that用作替代词， 指代上文提到的名词
Martian exploration 火星探测 make efforts to do sth. 努力做某事
Para. 2
One option is to explore other planets to see if we could live on them. The most likely choice is Mars, which is relatively close to Earth and has an environment less hostile than that of other planets. Mars has fascinated people since ancient times, and today our interest in Martian exploration is greater than ever before. Films such as The Martian enjoy worldwide popularity. More governments and organisations are making efforts to educate the public on the Red Planet, for example, the Mars Desert Research Station in the Utah desert of the US and the Mars Village in North-west China’s Qinghai Province.
一种选择是探索其他行星，看看我们是否可以在它们上生活。最有可能的选择是火星，它离地球相对较近，环境也不像其他行星那么恶劣。自古以来，火星就吸引着人们，今天我们对火星探索的兴趣比以往任何时候都大。像《火星救援》这样的电影在全世界都很受欢迎。越来越多的政府和组织正在努力教育公众了解这颗红色星球，例如，美国犹他州沙漠的火星沙漠研究站和中国西北部青海省的火星村。
Para. 2
Humans choose to explore Mars to see if we coud live on it.
One option is to explore other planets to see if we could live on them. The most likely choice is Mars, which is relatively close to Earth and has an environment less hostile than that of other planets. Mars has fascinated people since ancient times, and today our interest in Martian exploration is greater than ever before. Films such as The Martian enjoy worldwide popularity. More governments and organisations are making efforts to educate the public on the Red Planet, for example, the Mars Desert Research Station in the Utah desert of the US and the Mars Village in North-west China’s Qinghai Province.
What’s Plan B
Why is Mars our Plan B
Let’s enjoy the film The Martian《火星救援》mentioned in para 2.
Para. 3
Since the 1960s, we have been sending unmanned spacecraft to Mars. Our probes have orbited the planet, sending back valuable data and stunning images. Our robots have explored the Martian surface, testing the soil and searching for resources, water and signs of life. Encouraged by discoveries over the years, space agencies of various countries are planning manned missions to Mars that could take place within the next twenty-five years.
unmanned spacecraft 无人驾驶宇宙飞船
manned spacecraft 载人宇宙飞船
manned missions 载人任务
stunning images 令人惊奇的图像
space agencies 航天局
take place 发生；举行
Para. 3
Since the 1960s, we have been sending unmanned spacecraft to Mars. Our probes have orbited the planet, sending back valuable data and stunning images. Our robots have explored the Martian surface, testing the soil and searching for resources, water and signs of life. Encouraged by discoveries over the years, space agencies of various countries are planning manned missions to Mars that could take place within the next twenty-five years.
自20世纪60年代以来，我们一直在向火星发射无人飞船。我们的探测器绕地球运行，发回了宝贵的数据和令人惊叹的图像。我们的机器人探索了火星表面，测试了土壤，寻找资源、水和生命迹象。受到多年来发现的鼓舞，各国的航天机构正在计划载人火星任务，这可能在未来25年内实现。
Para. 3
Humans have made efforts to land on Mars for researches.
Since the 1960s, we have been sending unmanned spacecraft to Mars. Our probes have orbited the planet, sending back valuable data and stunning images. Our robots have explored the Martian surface, testing the soil and searching for resources, water and signs of life. Encouraged by discoveries over the years, space agencies of various countries are planning manned missions to Mars that could take place within the next twenty-five years.
How do human beings explore the Mars
1
2
3
Para. 4
There is no doubt that humankind is drawn towards Mars, with dreams of making it our second home. However, sending people there will require all the skill, courage and intelligence of the human race. While the Moon can be reached within days, it would take months to reach Mars, travelling through dangerous solar radiation. And even if the first settlers do reach Mars safely, they may not be able to return to Earth – ever. Staying alive will be a daily challenge, but as proved by the Biosphere 2 experiment, not impossible. As early as the 1980s, scientists were building Biosphere 2 in the Arizona desert. It consisted of a closed space in which people, animals and plants could live together. The “closed” concept meant that the space was designed to function with its own oxygen, food and water, needing nothing from the outside world. Although the two-year experiment was not a success, it did provide us with a better understanding of how humans might be able to live on another planet. More recently, scientists have succeeded in growing a variety of plants in an environment similar to that on Mars. That definitely is a big step forward.
solar radiation太阳辐射 draw drew drawn 吸引
do/does/did＋动词原形：用于强调谓语
consist of =be made up of /be composed of 由...组成
consist in 在于，存在于
Para. 4
There is no doubt that humankind is drawn towards Mars, with dreams of making it our second home. However, sending people there will require all the skill, courage and intelligence of the human race. While the Moon can be reached within days, it would take months to reach Mars, travelling through dangerous solar radiation. And even if the first settlers do reach Mars safely, they may not be able to return to Earth – ever. Staying alive will be a daily challenge, but as proved by the Biosphere 2 experiment, not impossible. As early as the 1980s, scientists were building Biosphere 2 in the Arizona desert. It consisted of a closed space in which people, animals and plants could live together. The “closed” concept meant that the space was designed to function with its own oxygen, food and water, needing nothing from the outside world. Although the two-year experiment was not a success, it did provide us with a better understanding of how humans might be able to live on another planet. More recently, scientists have succeeded in growing a variety of plants in an environment similar to that on Mars. That definitely is a big step forward.
毫无疑问，人类被火星所吸引，梦想着把它变成我们的第二个家园。然而，把人送到那里需要人类所有的技能、勇气和智慧。虽然月球可以在几天内到达，但到达火星需要几个月的时间，要经过危险的太阳辐射。即使第一批移民安全抵达火星，他们也可能永远无法返回地球。活下来将是每天的挑战，但正如生物圈2号实验所证明的那样，并非不可能。早在20世纪80年代，科学家们就在亚利桑那州的沙漠中建造生物圈2号。它由一个封闭的空间组成，在这个空间里，人、动物和植物可以共同生活。“封闭”的概念意味着这个空间的功能是由它自己的氧气、食物和水来设计的，不需要来自外部世界的任何东西。虽然这个为期两年的实验并不成功，但它确实让我们更好地了解了人类如何能够在另一个星球上生活。最近，科学家们成功地在类似火星的环境中种植了多种植物。这绝对是向前迈出的一大步。
Para. 4
In order to make Mars a second home, humans have conducted experiments about the environments similar to that on Mars.
There is no doubt that humankind is drawn towards Mars, with dreams of making it our second home. However, sending people there will require all the skill, courage and intelligence of the human race. While the Moon can be reached within days,
it would take months to reach Mars, travelling through dangerous solar radiation. And even if the first settlers do reach Mars safely, they may not be able to return to Earth – ever. Staying alive will be a daily challenge, but as proved by the Biosphere 2 experiment, not impossible. As early as the 1980s, scientists were building Biosphere 2 in the Arizona desert. It consisted of a closed space in which people, animals and plants could live together. The “closed” concept meant that the space was designed to function with its own oxygen, food and water, needing nothing from the outside world. Although the two-year experiment was not a success, it did provide us with a better understanding of how humans might be able to live on another planet. More recently, scientists have succeeded in growing a variety of plants in an environment similar to that on Mars. That definitely is a big step forward.
What are the challenges of moving to Mars
1
2
3
4
Arizona desert
people
animals
plants
oxygen
food
water
a better understanding
Para. 5
For now, human settlement of Mars is still decades away. In the meantime, scientific research shows that the planet Earth is getting warmer. This change is being caused by human activity and is having a terrible effect on the biosphere. Until we are finally able to live on another planet, we need to take much better care of our own. Right now, it’s the only one we have!
in the meantime 在此期间，与此同时
have a(n)...effect on... 对……有……影响
expose v．使暴露(于险境);揭露;使曝光;使接触到…
expose...to... 使…暴露于…；使…接触…
be exposed to... 暴露于…
Para. 5
For now, human settlement of Mars is still decades away. In the meantime, scientific research shows that the planet Earth is getting warmer. This change is being caused by human activity and is having a terrible effect on the biosphere. Until we are finally able to live on another planet, we need to take much better care of our own. Right now, it’s the only one we have!
目前，人类在火星上定居还需要几十年的时间。与此同时，科学研究表明，地球正在变暖。这种变化是由人类活动引起的，并对生物圈产生了可怕的影响。在我们最终能够在另一个星球上生活之前，我们需要更好地照顾我们自己的星球。现在，这是我们唯一的选择！
Para. 5
Before human settlement of Mars, we should protect Earth better.
What should human beings do in the near future
For now, human settlement of Mars is still decades away. In the meantime, scientific research shows that the planet Earth is getting warmer. This change is being caused by human activity and is having a terrible effect on the biosphere. Until we are finally able to live on another planet, we need to take much better care of our own. Right now, it’s the only one we have!
For now, What can we do
Group discussion
So, we need to take much better care of our own planet—Earth.
1.Clear plate campaign
2.No plastic
(plastic bags, plastic straws)
3.Save water
4.No littering
5.Save electricity
6.Recycle&Reuse&Reduce
Summary
Human beings are faced with serious 1._____________(environment) problems, which lead scientists to consider moving to Mars 2._____ the environment is less hostile than 3.____ of other planets.Mars 4.______________(fascinate) people since ancient times and relevant movies also gain much 5.__________(popular)．Spacecraft and robots have been sent to explore Mars since the 1960s，encouraging more 6._________(country) to plan manned missions.There is no doubt that humankind 7.________(draw) towards Mars despite some challenges,8.___ human settlement of Mars is still decades away.We have to admit that 9.__________(protect) our earth is the most urgent step right now.We need to take much better care of 10.____(we) own planet.
environmental
where
that
has fascinated
popularity
countries
is drawn
but
protecting
our
Homework
据国内媒体“China daily”（中国日报）报道，中国航天科技公司公布载人登陆火星的计划，现招募首批火星居民。假设你是李华，对该计划很感兴趣，要写一封申请信。要求包括以下要点：
个人优势 （对火星的了解，性格，所具备的技能）
参加原因
希望获准
注意:
1. 字数80左右;
2. 可以适当增加细节，以使行文连贯