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1、UNIT 4SPACE EXPLORATIONSectionDiscoveringUsefulStructures课后训练提升一、单句语法填空1.You shouldnt miss the chance (go) abroad for further study.答案:to go2.Do you have any letters (type)?答案:to be typed3.(keep) healthy,he exercises every day.答案:To keep4.She felt embarrassed (fail) the driving test.答案:to fail5.Its
2、good for you (read) aloud.答案:to read6.Alice lay on the grass,(look) into the sky.答案:looking7.(write) in simple English,the book is easy to understand.答案:Written8.With so much work (do),well have to stay up.答案:to do9.(travel) along the old Silk Road is an interesting experience.答案:Travelling10.The te
3、acher went into the classroom,(follow) by a group of students.答案:followed二、完成句子1.每个人都感动得无以言表。Everybody was moved .答案:beyond words2.把窗户关好,不然屋子里就太冷了。Shut the window, itll get too cold in here.答案:otherwise3.因资金缺乏,他的计划失败。His plan failed money.答案:for lack of4.我不明白她为何那么伤心。I couldnt why she was so sad.答案:f
4、igure out5.为了找个更好的工作,他决定学一门外语。find a better job,he decided to study a foreign language.答案:In order to三、阅读理解Life in space will certainly take some getting used to!But the space station has been designed to keep the astronauts as comfortable as possiblethe modules(舱) are roomy,bright,and kept at a con
5、stant 21.Its important the crew members are comfortable because theyll be busy aboard the station.In a typical workday,crew members will spend 14 hours working and exercising,1.5 hours preparing and eating meals,and 8.5 hours sleeping.Here are some other fun facts about life aboard the station:FoodC
6、ome mealtime,astronauts will have a special dining kitchen.Space food just keeps getting betterand more like food we enjoy here on Earth.In early space missions(任务),astronauts could eat only freeze-dried food that didnt require any preparation.But the space station is equipped with water,microwave o
7、vens,and refrigerators,allowing the folks on board to eat more “normal” types of food,including fruit,vegetables,and ice cream!SleepEach crew member has a private room.With no gravity,theyll need to tie themselves to their beds,or they will float away!That might sound like a strange way to sleep,but
8、 astronauts from past space missions report that sleeping in space is actually pretty great!ExerciseYou might not think it,but exercise is even more important on the station than it is on Earth.There is not much gravity in space.Astronauts dont stand up,sit down or walk in space,so their muscles and
9、 bones dont have to work muchand this muscle and bone loss can be dangerous back on Earth.To fight this,astronauts on the station will exercise on bikes,rowing machines,and other equipment about two hours every day.ClothingAstronauts will have to wear special space suits while travelling aboard the
10、U.S.shuttle or Russian rockets.But once theyre safe inside the space station,crew members can wear regular clothing.Of course,a specially designed,pressurized space suit is required for space walks.It has to bear flying pieces and protect the astronauts from dramatic temperature changes.It can range
11、 from -84 in the shadow of the station to 121 in the hot sun.PersonalCleanlinessSimple tasks like brushing your teeth can be challenging in a weightless environment.A little water doesnt flow in a stream.Astronauts will use a freshwater hose(软管) to take showers,shampoo,and wash offthen a second vacu
12、um hose to suction(吸) off the dirty water.And how do you go to the bathroom in space?With a special “air toilet” that uses flowing air instead of water to get rid of waste.1.The text is mainly about .A.ways to get used to life in spaceB.fun facts about life in spaceC.temperature changes in spaceD.a
13、typical workday in space答案:B解析:主旨大意题。根据第一段最后一句可知答案。2.What can we learn about space food from the text?A.Astronauts could eat apples in space in the past.B.Astronauts eat only fruit,vegetables and ice cream now.C.Fresh food isnt available to astronauts in space.D.Space food is getting better now than
14、 before.答案:D解析:细节理解题。第二段第二句指出,太空食物越来越像我们在地球上所吃的食物,接着指出在过去宇航员只能吃冻干的食物,但现在能吃水果蔬菜等平常食物。由此判断,太空食物比过去好了。3.Why is exercise more important in space than on Earth?A.It can prevent muscle and bone loss.B.It can make astronauts feel relaxed in space.C.It can help astronauts spend their spare time happily.D.As
15、tronauts lives are more important in space than on earth.答案:A解析:细节理解题。由第四段“theirmusclesandbonesdonthavetoworkmuchandthismuscleandbonelosscanbedangerousbackonEarth.”可知,由于太空无重力,人不用坐立行走,运动的机会极少,容易给人的肌肉及骨头造成危害,因此宇航员必须每天锻炼两小时。4.What can be learned from the paragraph “Clothing”?A.The temperature is quite different in different places in space.B.Astronauts must wear special space suits all the time in space.C.Astronauts can wear regular clothing for space w
