1、Plan B:Life on Mars?Work in pairs.Complete the quiz and find out how much you know about Mars.Try to guess if you are not sure of the answers.1.a 2.a 3.c 4.b1.a 2.a 3.c 4.bActivity 2 Read the passage and find out why humans might live on Mars.Because Mars is relatively close to Earth and has an envi
2、ronment less hostile than that of other planets.Plan B:Life on Mars?Mind mapScientists are preparing Plan B for earth due to the risks.The reason why Mars is fit for human habitation.The attempts to explore Mars.The challenges and progress in trying to live on Mars.We need to take care of our own pl
3、anet.nuclear missiles,environmental problems,disastersfascination?unmanned spacecraft in the 1960s,manned missionsrequirements,months,unable to returnBiosphere 2 experiment,growing a variety of plantsChoose the magazine in which you would most likely find the passage and give your reasons.1 The Trav
4、eller2 All About Space3 Environmental Concerns4 Biology for FunActivity 4Choose the statements that can be inferred from the passage.1.Humans have yet not visited Mars.2.People want to go to Mars on holiday.3.There are plants growing on Mars.4.The greatest risk to life on Earth used to be nuclear mi
5、ssiles.5.One day,humans will have to go and live on another planet.6.Our Plan A includes developing renewable energy resources.7.The Biosphere 2 experiment ended in failure.In _ 1960s and 1970s,the greatest fear was _ the human race,and possibly all _(advance)life forms on the planet,could _(被毁灭)by
6、nuclear missiles,just at the push of a button.Today,however,environmental problems have taken over as the greatest risk _ life on Earth.Scientists are thinking of ways to _(low)this risk,such as replacing coal and oil _ forms of renewable energy.But they are also _(做最坏的打算):what can we do if the _(te
7、rrify)scenes in films such as The Day After Tomorrow happen in real life?What is our Plan B for Earth?thethatadvancedbe wiped outtolowerwithpreparing for the worstterrifyingOne option is _(explore)other planets to see if we could live on them.The most likely choice is Mars,_ is relatively close to E
8、arth and has an environment less hostile than _ of other planets.Mars _(fascinate)people since ancient times,and today our interest in Martian _(explore)is greater than ever before.Films such as The Martian enjoy worldwide _(popular).More governments and organisations are making efforts to educate t
9、he public_ the Red Planet,for example,the Mars Desert Research Station in the Utah desert of the US and the Mars Village in North-west Chinas Qinghai Province.to explorewhichthathas fascinatedexplorationpopularityonSince the 1960s,we _(send)unmanned spacecraft to Mars.Our probes have orbited the pla
10、net,_(send)back valuable data and stunning images.Our robots have explored the Martian surface,_(test)the soil and searching for resources,water and signs of life._(encourage)by discoveries over the years,space agencies of various countries are planning manned missions to Mars that could take place
11、within the next twenty-five years.have been sendingsendingtestingEncouraged_(毫无疑问)humankind is drawn towards Mars,with dreams of making _ our second home.However,_(send)people there will require all the skill,courage and intelligence of the human race._ the Moon can be reached within days,it would t
12、ake months to reach Mars,travelling _ dangerous solar radiation.And even if the first settlers do reach Mars _(safe),they may not be able to return to Earth ever.Staying alive will be a daily challenge,but as _(prove)by the Biosphere 2 experiment,not impossible.There is no doubt thatitsendingWhileth
13、roughsafelyprovedAs early as the 1980s,scientists were building Biosphere 2 in the Arizona desert.It consisted _ a closed space in which people,animals and plants could live together.The“closed”concept meant that the space _(design)to function with its own oxygen,food and water,needing nothing from
14、the outside world.Although the two-year experiment was not _ success,it _ provide us _ a better understanding of how humans might be able to live on another planet.More recently,scientists have succeeded in _(grow)a variety of plants in an environment similar to that on Mars.That definitely is a big
15、 step forward.ofwas designed toadidwithgrowingFor now,human settlement of Mars is still decades away.In the meantime,_(science)research shows that the planet Earth is getting _(warm).This change is being caused by human activity and is _(有严重影响)the biosphere.Until we are _(final)able to live on anoth
16、er planet,we need to take much better care of our own.Right now,its the only one we have!scientificwarmerhaving a terrible effect onfinallyActivity 61 Where is the person in the story?2 What difficulties is he facing?3 What has he already done to stay alive?4 What will he do next?1 The person in the
17、 story is on Mars.2 He has to keep himself safe from the deadly radiation outside.And he is facing the lack of water,oxygen and food.3 He has resumed communication with the base.He has discovered an underground ice deposit to get water,and produce oxygen with the water.4 He will work out how to farm
18、 on Mars and grow plants with seeds.1.be caught in a dust storm2.resume communication with the base3.be powered by4.protect me from the deadly radiation5.go wrong6.keep me safe from exposure to the Martian surface7.at a time8.be short of9.if the electricity holds1.被困在沙尘暴中被困在沙尘暴中2.重新和基地恢复通信重新和基地恢复通信3.由由.驱动，发电驱动，发电4.保护我免遭致命的辐射保护我免遭致命的辐射5.出问题，出故障出问题，出故障6.让我避免暴露在火星表面让我避免暴露在火星表面7.一次，每次一次，每次8.短缺短缺9.如果电力持续供应如果电力持续供应Thank You
