1.Like most creatures on earth,humans come with a circadian clock (生物鐘).Even though an average adult needs eight hours of (41)B a night,there are"short sleepers",who need far (42)D sleep,and morning people,who always get up early.Then there are the rest of us,who (43)C alarm clocks to get up in the morning.
For those who want to get up early and don't depend on the alarm clock,there is(44)A.Actually,sleep experts say that with a little self-control,(45)B people can reset (重置) their circadian clocks.But it's not as simple as forcing yourself to go to(46)D earlier.You need to produce a sort of jet lag (時差) but you don't have to (47)C your time zone.And stick it out until your body (48)B resets itself.
To start,move up your wake-up time (49)C 20minutes a day.If you (50)B rise at 8a.m.,but really want to get up at 6a.m.,set the alarm for 7:40on Monday.The next day,set it for 7:20and so on.(51)D,after you wake up,don't (52)C in bed.In theory,you'll gradually get(53)B about 20minutes earlier each night.Besides,(54)B has a very special relationship with our brain.So turn off the computers and televisions to (55)D extra light exposure as it is near bedtime.
(56)C light exposure,another big(57)D for a would-be morning person is the weekend.Sleeping late on Saturday sends the (58)A an entirely new set of scheduling.By Monday,a 6a.m.a(chǎn)larm will feel like 4a.m.(59)B biology has a kind of memory of Saturday's staying-up late.This might totally(60)C a week's effort.

41.A.restB.sleepC.exerciseD.work
42.A.deeperB.longerC.moreD.less
43.A.focus onB.believe inC.rely onD.set in
44.A.hopeB.doubtC.difficultyD.support
45.A.otherB.mostC.fewD.no
46.A.schoolB.churchC.workD.bed
47.A.countB.a(chǎn)bandonC.leaveD.forget
48.A.shapeB.clockC.buildingD.language
49.A.forB.withC.byD.to
50.A.rarelyB.regularlyC.constantlyD.temporarily
51.A.OtherwiseB.HoweverC.ThereforeD.Then
52.A.sleepB.eatC.stayD.read
53.A.a(chǎn)wakeB.sleepyC.tiredD.lazy
54.A.bedtimeB.lightC.computerD.television
55.A.seekB.ignoreC.shelterD.a(chǎn)void
56.A.As forB.Instead ofC.Apart fromD.Due to
57.A.changeB.scheduleC.chanceD.challenge
58.A.brainB.soulC.spiritD.mind
59.A.unlessB.becauseC.a(chǎn)lthoughD.until
60.A.saveB.replaceC.ruinD.reward

分析 像大多數(shù)生物一樣,人類也有生物鐘,平均一個人成年人每晚需要八小時的睡眠時間還有一些人依靠鬧鐘才能起來.

解答 41-45 BDCAB  46-50 DCBCB  51-55 DCBBD  56-60 CDABC
41.B考察名詞.根據(jù)第二句話的意思可推出,平均一個人成年人每晚需要八小時的睡眠時間,選項只有sleep符合.
42.D考查形容詞.there are"short sleepers這句話告訴我們有些人需要更少的睡眠時間.
43.C考查動詞短語.前句說有些人早早就醒了,還有一些人依靠鬧鐘才能起來.rely on依靠,依賴.focus on集中于;believe in相信;
44.A考察名詞.根據(jù)第二段sleep experts say that with a little self-control這句話可知,專家說對于依靠鬧鐘起來的人有希望自控.
45.B考查代詞.第二段第一句話For those who want to get up early and don't depend on the alarm clock對于那些想早起或者不依靠鬧鐘的人來說,所以此處most people指大多數(shù)人.
46.D考查名詞.go to bed為固定短語,意思是上床睡覺.
47.C考查動詞.根據(jù)produce a sort of jet lag 你需要制造一個時間差,但不要求你離開時間區(qū).
48.B考查名詞.此處指的重置人體生物鐘.所以body clock指人體本身的生物鐘.
49.C考查介詞.本句意思是每天起床的時間提前了20分鐘,by此處為介詞,意思是"了".
50.B考查副詞.此處regularly為副詞,意思是定期的,有規(guī)律地,用來修飾動詞rise,如果你定期早上八點起床.
51.D考查副詞.這段開頭有To start,開始,所以此處then表示緊接著.
52.C考察動詞.起床之后,應(yīng)該是吃早飯,在醒來之后,別在床上吃東西.
53.B考查形容詞.前文set the alarm for 7:40on Monday.The next day,set it for 7:20可知,每次提前20分鐘會在起床后有困意.
54.B考查名詞.在55空后extra light 可知,此處燈光對我們確實有影響.
55.D考查動詞.根據(jù) turn off the computers and televisions關(guān)掉電腦電視的目的是為了避免燈光.
56.C考查短語.a(chǎn)nother big challenge另外一個挑戰(zhàn),所以填apart from意思是除了…還有.
57.D考查名詞.根據(jù)這兩句的介紹燈光和周末對有些人來說都是一個挑戰(zhàn),challenge意思是挑戰(zhàn),符合語境.
58.A考查名詞.在周六睡的太晚的話會給大腦發(fā)送一個完全新的日程的安排,brain意思是大腦,因為發(fā)送信息的是通過大腦來完成.
59.B考查連詞.because引導(dǎo)一個原因狀語從句,用來解釋a 6a.m.a(chǎn)larm will feel like 4a.m.
60.C考查動詞.根據(jù)上文可知在周末晚睡會破壞整個一周的努力,ruin此時是動詞,毀壞的意思.

點評 做這類題首先要通讀全文,了解文章大意,緊緊抓住上下文語境所提供的信息,然后明確詞意、詞性、詞的搭配,并注意上下連貫,合乎邏輯,然后逐一選出答案,最后通讀全文,查缺補漏.

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