1、选择性必修三选择性必修三 Unit2Unit2课文填空课文填空ReadingReadingLife on a space stationLiving in space is every would-be astronauts dream. My six-month stay on a spacestation has come to 1._ end, and it has been a challenging but magical adventure. Ibet youd love to know what daily life is like up in space and how it
2、2._(differ)from that on the Earth-the low gravity 3._ (definite) makes ordinary thingsstrange!The strangeness of living in space is apparent 4._ the moment we sleep. Due tothe near 5._(absent) of gravity in space, we have to attach ourselves so that wedont float around. We usually sleep in private q
3、uarters, 6._ are more like largecupboards, or in sleeping bags attached to the walls or the ceiling. Its strange that wetry to sleep with no pressure against our back, but the 7. _(usual) beds dontbother us any more.After about eight hours of sleep, we start our day of work.The routine tasks that oc
4、cupy most of the day are 8._ (demand), but they can alsobe extremely rewarding. Our main mission is 9._(conduct) scientific research.We need to evaluate the effects of low gravity on animals and plants. Creatures suchas mice, fish and 10._(mosquito) have also been sent to the station! In alow-gravit
5、yenvironment,wecanlearnmoreaboutchangesincellsandmicroorganisms 11._the microscope. As well as doing these biologicalexperiments, we carry out experiments in other research fields. I have been workingon one experiment which locates and 12._(track) lightning over large regions ofthe Earth. 13._(hope)
6、, it will cast new light on the Earths climate and lead tobetter lightning protection. With so much going on, the space station needs a lot ofmaintenance, so we 14._(constant) check support systems and do some cleaning.The most 15._ (challenge) work takes place when we need to perform tasksoutside t
7、he space station: such an testing new equipment, monitoring scientificexperiments or repairing the space station. 16._ the circumstances, its time for aspacewalk.First,weputonour17._(spacesuit),whichallowus18._(breathe) in space and protect us from exposure to the cold and radiation,Then we head out
8、, and sometimes perform tasks for hours at a time, with the beautifulEarth visible below. Splendid 19._ the view of the Earth is, spacewalking is not asexciting as you might think. Its probably the most dangerous work, with potentialrisks such as electric shocks. Thats 20._ every spacewalk is carefu
9、lly planned.In view of the low gravity environment, eating is also different in space, Most food isdried or freeze-dried, Its a luxury to eat fresh food, because fresh produce such asfruit and vegetables can only 21._(deliver) to the space station from the Earthevery couple of months. Salt and peppe
10、r are only in liquid form, so that they will notfloat away and block the air pipes. 22._, liquids cant be easily controlled inspace.We must drink water or any other liquids out of a bag through a thin tube oplastic. Furthermore, to keep our body healthy, we must ensure a 23._ (balance)supply of nutr
11、ients by taking pills.Spending some time in the gym is of vital 24._(important) to astronauts health.Did you know that in just five months, astronauts could lose a significant amount ofmuscle and bone mass? 25._(consider) these negative effects low gravity has26._ the human body, we discipline 27._(
12、us) to do at least two hours of exerciseevery day Exercise in space is not your average workout. We have to be tied ontospecially designed exercise equipment 28._ (stop) ourselves from floating around.During our leisure time, theres nothing we like more than to sit back with the rest ofthe crew and
13、watch our remarkable planet go by, 29._(take) pictures for our familyand friends back home. As the space station travels at a speed of about 17,500 mileper hour, we get to see the sunrise every 90 minutes. In these precious moments, allthe 30._ (challenge) of life in space seem worth it.选择性必修三选择性必修三
14、 Unit2Unit2课文填空课文填空 Extended-readingExtended-readingWhy we exploreIn 1969, 1. _ Neil Armstrong first landed on the Moon, many people thoughtthat soon we would be regularly visiting other planets in our solar system and wouldeven dare to travel beyond it. This is clearly not the case. The 2. _(real)
15、is thatspace exploration is extremely difficult and dangerous, can take a very long time andcosts a huge amount of money. Some people believe that 3._ spaceexploration expands our 4. _(understand )of the universe, it is a waste of thepublic purse and does nothing to enhance the quality of our lives
16、here on the Earth.Why do we continue to explore space, then?It is in our nature to explore. From the very early days of human life on the Earth, our5. _(curios) about the unknown has kept us adventuring into new places. Welong to visit thick and wild forests, climb vast mountain ranges, and cross de
17、ep oceans.We desire to explore the furthest frontier of all-space. 6. _ Stephen Hawkingonce said, Remember to look up at the stars and not down at your feet. Try to makesense 7. _ what you see and wonder about what makes the universe exist. Becurious. 8. _we are fascinated by the sky is evident in a
18、ncient tales fromaround the world, such as that of Change. While space exploration is a reality, weremain curious about the 9. _(mystery) of the universe. With each spacemission comes greater insight, thus 10. _(motivate) us to continue along thesame path of adventure.The results of these space inve
19、stigations have made major contributions to 11._ understanding of the origin, evolution, and 12_(like) future of theuniverse, such as planets, stars, and all other forms of matter and energy. 13._(explore) space helps address fundamental questions about our place in theuniverse and the history of ou
20、r solar system.14. _ is through our research into space that we have confirmed that the Earthis round and that it orbits the Sun. As we learn more about the universe, we may oneday answer the question 15. _ there is life on other planets.With technologies first researched and developed for space exp
21、loration, we can solvesome of the big problems facing mankind, making our lives safer and easier One ofthese is earthquake shock absorbers. Shock absorbers originally 16_(apply)to the space shuttle launch have also been set up in the cities with a high 17._(frequent) of earthquakes in order to prote
22、ct buildings and save lives. Sometechnologies need further research to 18. _(well) solve real-life problems. Forexample, liquid hydrogen is a clean alternative energy source that is used widely asrocket fuel, and it is likely that hydrogen fuel cell vehicles will be mass-produced andlaunched in the
23、near future. These scientific and technological advances can providebenefits to societies on the Earth in many areas 19_(include) health, energyand information technology. This should be 20. _ strong motive forcontinuing to explore space.Although space exploration demands huge 21. _(invest), the spa
24、ce industrycan actually bring great economic value. It 22. _(calculate) that the globalspace economy is increasing 23. _ billions of dollars every year. At the sametime, space exploration can provide a variety of career opportunities for young people.Jobs in the space industry go far beyond the astr
25、onauts that receive widespread media24. _(cover). There are many support staff on the ground, such as engineers,mechanics and research 25. _(assist).Moreover, the amazing work these people do can provide education and inspirationfor the next generation. For me 26_(person), this is by far the biggest
26、 reason27. _ humanity to explore space. Such wonders as a space shuttle launch orastronauts walking on the Moon are 28. _(incredible) exciting and inspiringto witness, and it can be these moments that shape childrens lives forever andmotivate them to become the scientists and engineers of the future. It is this kind ofinspiration that keeps our thirst for 29. _(know) alive and ensures thatadvances in space exploration and many other fields will continue to be made. Whenyou have seen a man walk on the Moon, you grow up believing that 30. _ ispossible!
