Whatcolourisittoday？Whatshapeisthatsmell？Whatdoesthatpainsoundlike？Thesequestionsmightseemlikenonsense，butfourpeoplein100mightthinktheymakeperfectsense．Thatfourpercenthavesynesthesia，andtheynaturallyexper

　　78．whonaturallyexperiencecertainsensestogether/（whoare）withsynesthesia细节概括题．第一段介绍了"通感病"的定义，That four percent have synesthesia，and they naturally experience certain senses together这句话描述了‘通感病的人共性---即共同体验不能感觉．故答案为whonaturallyexperiencecertainsensetogether 　　79．Becausetheirbrain/whitematterisorganizeddifferently．细节理解题．The white matter （脑白质） of synesthetes is organized differently from that of people without synesthesia，which may account for the differences in perception （感知）．在第二段第二句话，告诉我们通感病患者就是同时体验多种感官的人． 　　80．Theelderly，patientswithbraininjuresandartists．细节理解题．第三段主要讲述了"通感病"的优势．由第三段第三、四、五句可知，老人、脑部受伤者和艺术家可以从该症状中获益．故答案为Theelderly，patientswithbraininjuresandartists． 　　81．non-synesthetescanacquiresynesthesia/synesthesiacanbeacquired．细节概括题．由第四段第二句可知，研究人员训练人们获得字母颜色联系的能力是为了了解正常人能否获得共感能力，故答案为non-synesthetescanacquiresynesthesia