A a long afternoon nap B the peak production of melatonin C poor health D low sleep efficiency E good sleep efficiency F exposur

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问题 A a long afternoon nap
B the peak production of melatonin
C poor health
D low sleep efficiency
E good sleep efficiency
F exposure to blue light
The tiredness in the morning even after many hours in bed is due to______.

选项

答案D

解析句意：即使晚上睡了很久，但早上还是感觉疲倦，这是因为睡眠效率低。根据首段“your sleep efficiency is not that good”可知，即使睡得时间长还是会觉得疲倦的原因是睡眠效率低。故选D。

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本试题收录于：职称英语卫生类A级题库职称英语分类

职称英语卫生类A级

职称英语

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A a long afternoon nap B the peak production of melatonin C poor health D low sleep efficiency E good sleep efficiency F exposur

职称英语卫生类A级

职称英语

Theword"insomnia"inthefirstparagraphmeansConcerningtheuseofsleepingpills,whichofthefollowingstatementsistru

AtpresentinChinatheTBinfectionrateWhichofthefollowingisNOTmentionedinthepassageasafactormakingtheruralT

Asmoreandmorematerialfromotherculturesbecameavailable,Europeanscholarscametorecognizeevengreatercomplexityinm

ManyBenefitfromCancerOrganization1.Doyouknowachildwhosurvivedleukemia?Doyouhaveamother,sisterorauntwhoseb

Therearealtogether13dragstreatingsleepdisordersintheUnitedStates.FDAbaseditsorderuponawideinvestigationofs

The10-yearriskofheartdiseaseislowformostUSadults.Morethan100thousandpeopleparticipatedinthesurvey.

Heimpressedallhiscolleaguesasavigorousmanintheprimeofhiscareer.

Smokingisconsidereddangeroustothehealth.Ourtobacco--seller,Mr.Johnson,therefore,alwaysaskshiscustomers,iftheya

NewcomersWhenacountryisunder-populated,newcomersarenotcompetitors,hutassistants.Ifmorecometheymayproducen

Atthattime,wedidnotfullygraspthesignificanceofwhathadhappened.

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