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in hEr intErnAtionAl BEstsElling tAlk to thE hAnD, Author lynnE truss ArguEs thAt Common CourtEsiEs suCh As sAying "ExCusE mE" ArE prACtiCAlly ExtinCt. thErE ArE CErtAinly plEnty who woulD AgrEE with hEr. is it rEAlly truE wE DECiDED to FinD out By ExpErimEnts. in DozEns oFAmEriCAn CitiEs, our rEportErs pErFormED two ExpErimEnts: "Door tEsts" (woulD AnyonE holD onE opEn For thEm ); AnD "DoCumEnt Drops" (who woulD hElp thEm rEtriEvE A pilE oF "ACCiDEntAlly" DroppED pApErs ).Along thE wAy, thE rEportErs EnCountErED All typEs; mEn AnD womEn oF DiFFErEnt rACEs, AgEs, proFEssions, AnD inComE lEvEls. whilE 90 pErCEnt oF thE pEoplE pAssED thE Door tEst, only 55 pErCEnt pAssED thE DoCumEnt Drop.ArE pEoplE lEss likEly to hElp othErs whEn Doing so tAkEs ExtrA EFFort or timE not AlwAys, thE rEportErs FounD、tAkE thE prEgnAnt womAn who thought nothing oF BEnDing Down to hElp us with our pApErs. or thE womAn nAmED liz who BAlAnCED two CoFFEEs, hEr kEys AnD hEr wAllEt on A tAkEout trAy with onE hAnD, whilE piCking up pApErs oFF thE wEt pAvEmEnt with thE othEr, hEr rEAson For hElping "i wAs thErE," shE sAiD、 ovErAll, mEn wErE thE most willing to hElp, EspECiAlly whEn it CAmE to DoCumEnt Drops. in thosE, mEn oFFErED AiD 63 pErCEnt oF thE timE, CompArED to 47 pErCEnt Among womEn. oF CoursE, mEn wErEn’t EntirEly DEmoCrAtiC ABout whom thEy’D hElp.All oF thEm hElD thE Door For thE FEmAlE rEportEr, AnD wErE morE thAn twiCE As likEly to hElp hEr piCk up FAllEn pApErs thAn thEy wErE to hElp our mAlE rEportEr. By FAr, thE most Common rEAson pEoplE CitED For BEing willing to go out oF thEir wAy to hElp othErs wAs thEir upBringing. "it’s thE wAy i wAs rAisED," sAiD onE young womAn who hElD A Door opEn DEspitE struggling with hEr umBrEllA on A rAiny DAy inBrooklyn. wE rEAlizE this isn’t A rigorous sCiEntiFiC stuDy, But wE BEliEvE it is A rEAsonABlE rEAl-worlD tEst oF gooD mAnnErs ArounD thE gloBE.AnD it’s ComForting to know thAt in A plACE whErE millions oF pEoplE push onE AnothEr EACh DAy to gEt AhEAD, thEy’rE ABlE to Do it with A smilE. hEy, iF thEy CAn mAkE niCE hErE, thEy CAn mAkE niCE AnywhErE.

thE rEsults oF thE ExpErimEnts hAvE shown thAt Common CourtEsiEs ______.A．ArE still with us
B．ArE DisAppEAring
C．vAry with proFEssions
D．nEEDs rigorous stuDy