whatistheauthor'spurposeofwritingthisarticle?

1Whatistheauthor’spurposeinwritingthisarticle?Isit toinformortopersuadeorboth? 2Howdoestheauthorshowustheimportanceofdeep-sea explorationinPartThree(Paras.6-9)? 3Whatroledoesthelastparagraph(Para.12)perform?

Thatmeansremainingmindfulofthecontributionsthatolderpeoplemaketoothers—andmakingthosecontributionsyourself.There’snoreasontoacceptthatseniorsarealladdledandfrailjustbecausesomanyTVshowsdepictthemthatway.(Para.12)Whatistheauthor’sopiniononolderpeople?</p></p>

Whatistheauthor’sfather—thedoctor’sattitudetoPiquette? A: sympathetic B: indifferent C: incurious D: scornful

Youmayknowthefeeling.It’sthelateafternoon,andyoustillhaven’tleftthehouse.You’vespentseveralhoursonyourphone,scrollingthroughyourFacebooknewsfeed,refreshingTwitterandwatchingYoutubevideos.Asmartphonemightfeellikeit’skeepingyouconnectedbutitcanalsobeawayofsecludingyourself. DatafromarecentstudyconductedbyresearchersatNorthwesternUniversity’sFeinbergSchoolofMedicinefoundthatthescenariodescribedabove—highvolumeofphoneuseandastaticgeographiclocation—couldbelinkedtodepression.ThestudypublishedinTheJournalofMedicalInternetResearch,alsofoundthatdepressedpeople,onaverage,spendmoretimeonthephonethannon-depressedpeople. “Peoplearelikely,whenontheirphones,toavoidthinkingaboutthingsthataretroublingpainfulfeelingsordifficultrelationships,”saidDavidMohr,oneofthestudy’sseniorauthorsandaprofessorofbehavioralpsychologyatNorthwestern,inastatement.“It’sanavoidancebehaviorweseeindepression.”Mohralsopointedoutthatdepressedpeopletendtowithdrawemotionallyandavoidgoingout—behaviorsthatarearguablyfacilitatedbytheconstantentertainmentstreamavailableonsmartphones. Thestudy’sparticipantsconsistedofamixofpeoplewithandwithoutpriordepression.Theycompletedaquestionnairedescribingtheirsymptomsbeforeagreeingtohavetheirphoneusemonitoredfortwoweeks.UsingGPS,theresearcherstrackedtheirlocationandtheamountoftimetheyspentonthephone.Theywerethenabletoidentifywhichparticipantsweredepressedusingtheaggregatedphonedata,with87percentaccuracy. SohrobSaeb,aresearchfellowatNorthwestern,saidinthereleasethatphonescouldbemorereliablefordiagnosingdepressionthantraditionalmethods.Instandardindustrypractice,patientsareoftenaskedtodescribetheirsymptomsbyindicatinghowsadtheyareonascaleof1to10.AccordingtoSaeb,thereleasereported,theseresponsescanberoteandunreliable.Incontrast,thestudyfound,asmartphonecanunobtrusively(不引人注目地)andaccuratelymeasureapatient’sdailyactivity,providingdatathatcouldtriggerahealthcareprovidertorecognizetheneedforanintervention. Whatistheauthor’sopinionaboutusingasmartphone?

for i in range(b.max_row): for j in range(b.max_column): print(b.cell(row=i,column=j).value)上面语句运行的结果是：__________。 A: 1 1 1 1 1 1 1 1 1 1 B: 1111111111 C: 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 D: 出现异常

【单选题】CDMA通信的基站,假定基站A的码片序列是+1 +1 +1 -1 -1 +1 -1 -1,基站发射bit为101时,实际发射的信号是 A. +1 +1 +1 -1 -1 +1 -1 -1 +1 +1 +1 -1 -1 +1 -1 -1 –1 –1 –1 +1 +1 –1 +1 +1 B. +1 +1 +1 -1 -1 +1 -1 -1 –1 –1 –1 +1 +1 –1 +1 +1 +1 +1 +1 -1 -1 +1 -1 -1 C. +1 +1 +1 -1 -1 +1 -1 -1 +1 +1 +1 -1 -1 +1 -1 -1 +1 +1 +1 -1 -1 +1 -1 -1 D. –1 –1 –1 +1 +1 –1 +1 +1 –1 –1 –1 +1 +1 –1 +1 +1 –1 –1 –1 +1 +1 –1 +1 +1

for i in range(1,11): for j in range(1,11): b.cell(row=i,column=j).value=1 #b是一个工作表对象for i in range(1,11): for j in range(1,11): print(b.cell(row=i,column=j).value,end=" ") print()上面程序代码运行的结果是（）。 A: 1 B: 1 1 1 1 1 1 1 1 1 1 C: 1111111111 D: 1 1 1 1 1 1 1 1 1 11 1 1 1 1 1 1 1 1 11 1 1 1 1 1 1 1 1 11 1 1 1 1 1 1 1 1 11 1 1 1 1 1 1 1 1 11 1 1 1 1 1 1 1 1 11 1 1 1 1 1 1 1 1 11 1 1 1 1 1 1 1 1 11 1 1 1 1 1 1 1 1 11 1 1 1 1 1 1 1 1 1

下列哪个码片序列不能用于CDMA通信 A: ( -1 -1 -1 +1 +1 -1 +1 +1 ) B: ( -1 -1 +1 -1 +1 +1 +1 -1 ) C: ( -1 +1 -1 +1 +1 -1 -1 -1 ) D: ( -1 +1 -1 -1 -1 -1 +1 -1 )

请仔细观察下面行列式的计算过程，如果四个等号都理解了，请选择A，否则请选择B。 | a 1 1 1 1 | |a＋4 a＋4 a＋4 a＋4 a＋4| | 1 a 1 1 1 | | 1 a 1 1 1 | | 1 1 a 1 1 |= | 1 1 a 1 1 | | 1 1 1 a 1 | | 1 1 1 a 1 | | 1 1 1 1 a | | 1 1 1 1 a | | 1 1 1 1 1 | | 1 a 1 1 1 | =(a＋4) | 1 1 a 1 1 | | 1 1 1 a 1 | | 1 1 1 1 a | | 1 1 1 1 1 | | 0 a–1 0 0 0 | =(a＋4) | 0 0 a–1 0 0 | | 0 0 0 a–1 0 | | 0 0 0 0 a–1 | =(a＋4)(a–1)^4