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27.Where is the text most likely from?D.A tour guide.A.A science fiction.B.A news report.C.A children story.CEver wondered how astronauts do laundry in space?Well,they don't.On Earth,many of us are able to stick our stained()or smelly clothes in the washingmachine to get them nice and clean again before we re-wear them.However,there currently isnt a way for astronauts to do the same.So what do astronauts do with their clothes?They each have a limited number of items as itwould cost a lot of money to regularly send fresh clothes to them from Earth.These are worn a-gain and again until they're too smelly or dirty to wear anymore.Certain items of clothing can beworn for days,weeks or even months at a time.Unlike on Earth,astronauts'clothes don't pick up dirt from outside their home so theirclothes tend to get dirty less quickly.The temperature is also carefully controlled,which meansastronauts don't tend to sweat a lot.However,they do have to spend lots of time exercising eachday to keep their bodies in tip top shape so they aren't impacted by the conditions in space andthis can leave clothes stiff and sweaty.NASA is now figuring out how best to clean astronauts'clothes in space so they can be re-used for months or even years,just like on Earth.Space laundry is no small problem,especially as humans look to establish bases on the Moonand Mars.Rocket cargo space is tight and expensive,so why waste it on new outfits if astronauticclothing could be kept looking and smelling fresh?Next May,stain-removal pens and wipes willbe delivered for testing by astronauts.At the same time,a washer-dryer combo is being testedthat could operate on the Moon or even Mars,using minimal amounts of water and detergent()Such a machine could also prove useful in arid regions here on Earth.28.How do astronauts deal with their clothes?A.By changing them regularly.B.By washing them on earth5ob woHl.coC.By wearing them for a long time.D.By throwing them away.29.Which of the following is TRUE according to the passage?9i690s608363行no01td是A.Astronauts'clothes get dirty quickly.bi mnarolib motl anoinigoB.Astronauts'clothes can last less time..oei gnistlana bos saus B adeosd v(C.Each astronaut can bring enough items.oo eolqmea sd to apmoiingin adr a'isdWD.Space conditions can make astronauts sweat less.30.What is the purpose of NASA's research in recently?inalq nwon-eadaid dt oAsi990gi直h时ens时510时6Wo又dT8A.To keep astronauts healthy in space.atontond niw sdi svong of bssu mwoB.To set up bases on the Moon and Mars.stamilo om woin eodoins1 bogiod vodTC.Toinventa new kind of washer machine.18ab0roe2Ds动hn的A2AAbo7D.Tocastroauclothes best in space.c008 aI a31.What's thewriterattitude to the washer-dryer combo?A.NegativeB.Indifferent.C.Positive.,会篱，ts喜tD.Subjective..价文DOrganiions likAdventure Scntists play an oonresearch.Prof冲刺押题卷三·S2英语第4页（共8页）