Theplanewaslateanddetectiveswerewaitingattheairportallmorning.Theywereexpectingavaluableparcelof

　　diamondsfromSouthAfrica.Afewhoursearlier,someonehadtoldthepolicethatthieveswouldtrytostealthediamonds.

　　Whentheplanearrived,someofthedetectiveswerewaitinginsidethemainbuildingwhileotherswerewaitingonthe

　　airfield.TwomentooktheparcelofftheplaneandcarrieditintotheCustomsHouse.Whiletwodetectiveswerekeeping

　　guardatthedoor,twoothersopenedtheparcel.Totheirsurprise,thepreciousparcelwasfullofstonesandsand!

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　　飞机误点了,侦探们在机场等了整整一上午.他们正期待从南非来的一个装着钻石的贵重包裹.数小时以前,有人向警方报告,说有人企

　　图偷走这些钻石.当飞机到达时,一些侦探等候在主楼内,另一些侦探则守候在停机坪上.有两个人把包裹拿下飞机,进了海关.这时两个侦

　　探把住门口,另外两个侦探打开了包裹.令他们吃惊的是,那珍贵的包裹里面装的全是石头和沙子!