Amothersawherthree-year-oldsonputnickelinhismouthandswallowedit.Sheimmediatelypickedhimeup，turnedhimupsidedownandhithimontheback，whereuponhecougheduptwodimes.Frantically，shecalledtothefatheroutside."Yoursonjustswallowedanickelandcougheduptwodimes！WhatshallIdo？"Yelledbackthefather，"Keepfeedinghimnickels！"母亲见三岁的儿子将一枚五分镍币放进嘴里吞了下去，她立刻将他抱起，头朝下不停地拍打他的后背，他咳出了两枚一角的硬币，她发狂似的朝正在外面的孩子父亲喊道：“你儿子刚才吞下了一枚五分镍币，可咳出 ...