1、unit fourunit fourspace explorationspace explorationworkbookworkbook P79Activity 1travel agencyregular customermental illnesssports facilitiesshallow argumentnatural resourcesActivity 2.Across: 1.data 4.monitor 5.rocket 8.sufficientDown: 1.desire 2.signal 3.towel 4.material 6.current 7.beyondActivit
2、y 3.orbitpatternssufficientmusclesotherwiseindependentarguingproceduredeterminelimitedActivity 4.on boardresulted in In closing cant wait toin the hope of ran outcarry onAs a resultActivity 5spacewalk mankind worthwhilesmartphone elsewhere worldwidedowntown throughout high-techhard-working outbreak/
3、outgoingnarrow-minded heartbreak/heartbrokenlong-termsightseeing grown-upUsing StructuresActivity 11.Because he is the first Chinese astronaut to go into space.2.Im afraid the film is too long and boring for me to watch.3.One of the reasons is that Mir was too old and no longer a safe place to live
4、in.4.Yes,and I want to become the first Chinese to land on Mars.5.Im afraid the whole process is too complicated to explain in a few words.Activity 2to carry, to holdto set, to taketo build, launch, to provide, to liveselected, to failActivity 3to connectto doto getto send/sendingto seebeing makingA
5、ctivity41.I think physics is too difficult to learn.2.I think my dog ate enough to feed three dogs last night.3.I hope scientists will invent a time machine to go back into the past.4.I think we need to find a way to explore space and end world hunger at the same time.5.I study English so as to pass
6、 my exams.Reading and writing Activity 11.He believed humans must move into space to survive.2.Terraforming means changing the environment on a planet so that it is similar to Earths.3.One of the biggest issues was feeling bored. Humans on Mars would always need to keep themselves busy with various activities.4.It seems that humans living on Mars may well happen a lot sooner than most people believe.Activity 2is the most logical and practicala place similar to Marsthe budget of US $6 billion is not high enough for the plan to work
