2 填空 Do you want to know astronauts ’ everyday life in space? They also need to eat, 1 , exercise and relax.They do the 2 things as us, but they do them differently. On the earth, we put food on a plate and put water in a glass.Gravity holds the food down and keeps the water in the glass. 3 there is almost no gravity in space, so food can fly away, and astronauts must eat and drink 4 . Sleeping is very different in space.Some astronauts like to float ( 漂浮 )in the air, but most like to be in a sleeping 5 . They tie ( 系 )the bag to a wall so they won ’ t float away. Exercise is very 6 in space.On the earth, your legs 7 your body, but in space, astronauts float, so they don ’ t 8 their legs often.This is very bad for their legs, so they must exercise for thirty minutes every day.After one day's work ,astronauts relax .They may listen to music ,read ,watch films,play games ,or talk to their friends and families 9_____ the radio .Sometimes they just enjoy floating in the10 ________. . ( )1.A.play B.work C.sleep D.study ( )2.A.different B.same C.nervous D.strange ( )3.A.And B.But C.Because D.Or ( )4.A.loudly B.carelessly C.quietly D.carefully ( )5.A.room B.bed C.bag D.chair ( )6.A.usual B.different C.important D.exciting ( )7.A.carry B.change C.push D.shake ( )8.A.break B.need C.wash D.use ( )9.A.rest B.work C.flight D.exercise ( )10.A.talk to B.look after C.play with D.join in