16．A ceremony（仪式）where boys become crocodile（鳄鱼）men When does a teenager grow up and become an adult？In many countries，it happens on your 18th（51）birthday（生日），but in some parts of the world，you have to do something special to（52）enter（进入）the world of grown-ups． On an Oceanian island，some people live near the Sepik River，which is（53）full（充满的）of crocodiles．They believe that crocodiles made the（54）earth（地球）and its people．When it is time for teenager boys to become men，a"crocodile ceremony"take place． The boys are taken to a small house（55）called（叫作）the"Crocodile Nest"．In the house，the boys are told to think of their crocodile"father and mothers"．Old people in the village say that if the boys think of their crocodile parents，they will be stronger and（56）braver（勇敢的）because the ceremony will cause great pain．To take their minds off the pain，the boys tell jokes in the house，rather than just stay（57）silent（沉默的）．Surprisingly，some of the boys even sleep（58）during（在…期间）the most painful parts of the ceremony!It will be（59）eight/8（八）weeks before they leave the house． When the boys （60）finally（最后）leaves the crocodile house，there is singing and dancing in the village to welcome the new crocodile men．
