The author mentions "pick-me-up" to indicate that Which of the following tells us how caffeine affects sleep?

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问题 The author mentions "pick-me-up" to indicate that
Which of the following tells us how caffeine affects sleep?

选项 A、Caffeine blocks production of the enzyme that stops melatonin production.
B、Caffeine interrupts the flow of the hormone that prevents people from sleeping.
C、Caffeine halves the body’s levels of sleep hormone.
D、Caffeine stays in the body for many hours.

答案C

解析第二段的第三个句子谈到，“控制我们睡眠的是神经激素”，而这一段的最后一个句子告诉我们“含咖啡因咖啡能使这种睡眠激素减半”。这正是咖啡因影响睡眠的原理。

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The author mentions "pick-me-up" to indicate that Which of the following tells us how caffeine affects sleep?

职称英语卫生类基础

职称英语

Readthefollowingpassageanddecidewhichanswerbestfitseachspace.Forquestions26~45,markoneletterA,B,CorDo

InBritain,agreementsforinvitingandentertainingguestataweddingareusuallytheresponsibilityofthebride’sfamily.In

Thesingle,decisivefactorthatmadeitpossibleformankindtosettleinpermanentcommunitieswasagriculture.【R1】______Once

1.AccordingtotheWallStreetJournal,"Moreandmoreshoppersarebypassinghouseholdnamesforthecheaper,no-nameproducts

Rewardsandpunishmentsareusedindifferentwaysbydifferentcommunitiestomaintainsocialorderandpreserveculturalvalue

ANEWCRUISESHIPOneofthebiggestpassengershipsinhistory,theIslandPrincess,carriespeopleoncruisesaroundtheCa

StressCanMakeYouSickScientistsarenowstudyinganewfieldofresearchwhichiscalledpsychoimmunology(心理免疫学).Itisb

CarThievesCouldBeStoppedRemotely(遥远地)Speedingoff(超速行驶)inastolencar,thethiefthinkshehasgotagreatcatch.But

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