职称英语理工试题完形填空强化训练2018职称英语理工试题完形填空强化训练Thebettertohavelovedandlost;Thannevertohavelovedatall.以下是小编为大家搜索整理的2018职称英语理工试题完形填空强化训练，希望能给大家带来帮助!更多精彩内容请及时关注我们应届毕业生考试网!Everylivingthinghaswhatscientistscallabiologicalclockthatcontrolsbehavior.Thebiologicalclocktells__1__whentoformflowersandwhentheflowersshouldopen.Ittells__2__whentoleavetheprotectivecocoonandflyaway,andittellsanimalsandhumanbeingswhentoeat,sleepandwake.Eventsoutsidetheplantandanimal__3__theactionsofsomebiologicalclocks.Scientistsrecentlyfound,forexample,thatatinyanimalchangesthecolorofitsfur__4__thenumberofhoursofdaylight.Intheshort__5__ofwinter,itsfurbecomeswhite.Thefurbecomesgraybrownincolorinthelongerhoursofdaylightinsummer.Innersignalscontrolotherbiologicalclocks.Germanscientistsfoundthatsomekindofinternalclockseemstoorderbirdstobegintheirlongmigration__6__twiceeachyear.Birds__7__fromflyingbecomerestlesswhenitistimeforthetrip,__8__theybecomecalmagainwhenthetimeoftheflighthasended.Scientistssaytheyarebeginningtolearnwhich__9__ofthebraincontainbiologicalclocks.AnAmericanresearcher,MartinMoorhead,saidasmallgroupofcellsnearthefrontofthebrain__10__tocontrolthetimingofsomeofouractions.These__11__tellapersonwhento__12__,whentosleepandwhentoseekfood.Scientistssaythereprobablyareotherbiologicalclockcellsthatcontrolotherbodyactivities.Dr.Moorheadisstudying__13__ourbiologicalclocksaffectthewaywedoourwork.Forexample,mostofushavegreatdifficultyifwemustoftenchangetodifferentworkhours.__14__cantakemanydaysforahumanbodytoacceptthemajorchangeinworkhours.Dr.Moorheadsaidindustrialofficialsshouldhaveabetterunderstandingofbiologicalclocksandhowtheyaffectworkers.Hesaid__15__understandingcouldcutsicknessandaccidentsatworkandwouldhelpincreaseafactory'sproduction.1.A)scientistsB)humansC)plantsD)animals2.A)insectsB)birdsC)fishD)snakes3.A)effectB)affectC)effectedD)affected4.A)becauseB)forthereasonthatC)becauseofD)since5.A)monthsB)daysC)minutesD)weeks6.A)flightB)flyC)movementD)transportation7.A)preventedfromB)ordere