AnneWhitney,asophomoreatColoradoStateUniversity,firsthadaproblemtakingtestswhenshebegancollege．"Iwasalwayswellpreparedformytests．SometimesIstudiedforweeksbeforeatest．YetIwouldgointotakethetest,oulytofindIcouldnotanswerthequestionscorrectly．Iwouldblankoutbecauseofnervousnessandfear．Icouldn'tthinkoftheanswer．MylowgradesonthetestsdidnotshowwhatIknewtotheteacher．"Anotherstudentinbiologyhadsimilarexperiences．Hesaid:"Myfirstchemistrytestwasverydifficult．Than,onthesecondtest,Isatdowntotakeit,andIwassonervousthatIwasshaking．Myhandsweremovingupanddownsoquicklythatitwashardtoholdmypencil．IknewthematerialandIknewtheanswers．YetIcouldn'tevenwritethemdown!" Thesetwoyoungstudentswereexperiencingsomethingcalledtestanxiety．Becauseastudentworriesandisuneasyaboutatest,hisorherminddoesnotworkaswellasitusuallydoes．Thestudentcannotwriteorthinkclearlybecauseoftheextremetensionandnervousness．Althoughpoorgradesareoftenaresultofpoorstudyhabits,somethnestestanxietycausesthelowgrades． Recently,testanxietyhasbeenrecognizedasarealproblem,notjustanexcuseorafalseexplanationoflazystudents． Specialuniversityadvisingcoursestrytohelpstudents．Inthesecourses,advisorstrytohelpstudentsbyteachingthemhowtomanagetestanxiety．Atsomeuniversities,studentstaketeststomeasuretheiranxiety．Ifthetestsshowtheiranxietyishigh,thestudentscantakeshortcoursestohelpthemdealwiththeirtensions．Thesecoursesteachstudentshowtorelaxtheirbodies,Studentsaretrainedtobecomecalminverytensesituations．Bycontrollingtheirnervousness,theycanlettheirmindsworkatease．Learnedinformatianthencomesoutwithoutdifficultyonatest． AnexpertattheUniversityofCaliforniaexplains:"WithalmostallstttderltS,relaxationandlessstressarefeltaftertakingourprogram．Mostofthemexperiencebettercontrolduringtheirtests．Almostallhavesomeimprovement．Withsome,theimprovementisverygreat．" To"blankout"isprobably_____
A.to be like a blanket B.to be sure of an answer C.to be unable to think clearly D.to show knowledge to the teacher正确答案C
