At the beginning of this century, medical scientists made an interesting discovery; we are built not just of flesh and blood but also of time. They were 36 to show that we all have “a body clock” 37 us, which controls the 38 and fall of our body energies, 39 us different from one day one to the next. The 40 of “a body clock” should not be too 41 since the lives of most living things are controlled 42 the 24 hour night-and-day cycle. We feel 43 and fall asleep at night and become 44 and energetic during the day. If the 24 hour-cycle is 45 , most people experience unpleasant 46 . For example, people who are not 47 to working at night can find that 48 of sleep causes them to 49 badly at work. 50 the daily cycle of sleeping and 51 , we also have other cycles which 52 longer than one day. Most of us would 53 that we feel good on some days and not so good on 54 ; sometimes our ideas seem to flow and at other times, they 55 do not exist. 36.A.anxious B.able C.careful D.proud 37.A.inside B.around C.between D.on 38.A.movement B.supply C.use D.rise 39.A.showing B.treating C.making D.changing 40.A.invention B.opinion C.story D.idea 41.A.difficult B.exciting C.surprising D.interesting 42.A.from B.by C.over D.during 43.A.dull B.tired C.dreamy D.peaceful 44.A.regular B.excited C.lively D.clear 45.A.disturbed B.shortened C.reset D.troubled 46.A.moments B.feelings C.senses D.effects 47.A.prevented B.allowed C.expected D.used 48.A.miss B.none C.lack D.need 49.A.perform B.show C.manage D.control 50.A.With B.As well as C.Except D.Rather than 51.A.working B.moving C.living D.waking 52.A.repeat B.remain C.last D.happen 53.A.agree B.believe C.realize D.allow 54.A.other B.the other C.all other D.others 55.A.just B.only C.still D.yet |