This normally takes from five days to one week for a person to adapt to reversed routine of sleep and wakefulness, sleeping duri

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问题 This normally takes from five days to one week for a person to adapt to reversed routine of sleep and wakefulness, sleeping during the day and working at night.

选项

答案形式主语错误，应把句首的This改为It。

解析该句真正的主语是后面的不定式，由于主语太长，所以将其放在句尾，并用It作形式主语，且It takes sb．sometime to do sth．为固定表达。

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This normally takes from five days to one week for a person to adapt to reversed routine of sleep and wakefulness, sleeping duri

专业英语八级

GreatchangeshavetakenplaceinChinasincetheintroductionofthereformandopeningpolicy.

TheUNGeneralAssembly,thecentralpoliticalforum,iscomposedof193members,includingvirtuallyalltheworld’snation-sta

Fordecades,thetelevisionwastheflagshipofanyconsumer-electronicsproductline-up.Inallthegadgetsinthehome,【M1】___

Besidesconcernsabouthowadsaffectindividuals,criticshaveraisedethicalissuesabouthowadvertisingaffectssociety.F

Wildlifeconservationistssaythecoverthatfoliageprovidesforanimalsisequalinimportancetothefoodsupplying.

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Thenatureofworkischanging.Recenttechnologicaladvances,ashiftfrommanufacturingtoservice-basedorganizations,incr

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