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29.What does the research find about free time?A.It is an essential means of relaxationB.It does good to perform daily tasksC.It is secretly stolen by technologyD.It forces people to do more work、为抛物到30.What does the example of online banking tell us?A.It's not too late to get free time back.且满足直B.Lunch break cap be saved by online banking.C.Doing little or nothing is sometimes OK.D.Technology leads to a denser form of life31.Who are the target readers of the text?A.Students in on-line learning.B.Employees working in the bank.C.People relying on digital devicesD.Researchers in the technological labDMars exploration is a significant scientific expedition and it's like the Apollo missions onthe Moon 50 years ago.While human-led missions to Mars seem likely in the coming decades.what are our prospects of long-term habitation on Mars?Scientists have found a way to growcyanbacteria,also known as blue-green algae(),on Mars.It's a discovery that could lead tohuman habitation of the Red Planet.Cyanobacteria are tiny living things found in water.They release oxygen duringphotosynthesis(the process by which organisms use sunlight to make their own food).The algaecan also transform other gases,such as carbon dioxide and nitrogen,into nutrients,substancesthat help living things grow.Scientists think that a huge rise in the numbers of eyanobacteria 2.4billion years ago is what made Earth's atmosphere breathable.Mars'atmosphere is mostly made up of carbon dioxide and nitrogen and there is littleoxygen in Mars's atmosphere.So researchers are hoping the blue-green algae could be used toallow plants to grow there too,for food and medicines.However,it is impossible to growblue-green algae on Mars naturally.To solve this problem,a team of scientists from theUniversity of Bremen,in Germany,,have developed a special bioreactor(生物反应器)calledAtmos.A bioreactor is a machine for growing microbes.Using this,the team,led by Dr CyprienVerseux,showed how cyanobacteria could be grown using resources found on Mars.Not ony did the algae grow as hoped,but they also helped other organisms.such as bacteria togrow.The bioreactor is still just a test version.It just starts and there is still a long way to go.However.Verseux hopes that the results can inspire a system that could one day support life on Mars.英语第6页（共10页）