Unit7TheSeaTherewereoncelivedsomesailorsinavillagenearthesea,whomadealivingbyfishing.Sincetheirancestorswereexplorers,theyallinheritedthespiritofadventure.Becauseofoverfishingandindustrialandagriculturalpollutionfromchemicals,therewerefewerandfewerfishesinthecoastalwaters.Sotheyhadtotravelfurtherinsearchofmorefishes.Oneday,theysetsailfordeepseafishing.Beforetheirjourney,theyhadadebateaboutwheretogo.SinceJackwastheoldestofthem,everythingwasdoneaccordingtohisinstructions.Jack,thoughinhisforties,wasintelligentandenergetic.Hepersuadedotherstomakeavoyageofadventure.Afteraday'svoyage,theyeventuallyreachedanunknownareatheyhadneverbeentobefore.Theyweretryingtorecognisewheretheywere.Allatonce,amanscreamedwithterror“Watchout!Sharks！”Theyweresurprisedtofindthattheyweresurroundedbydozensofsharks,eachatalengthof5to10metres.Whatahorriblescene!Everyonefeltterrified.Obviouslytheyhadgotintotrouble.Jackbegantoregretandapologisedforhisriskydecision.Butnowtheymustfindasolutiontohandlethesharks.Theyhadnochoicebuttobattlewiththesharksbecausetheycouldhardlyescape.Afiercebattlebegan.Everyonetookuptheirweaponstofightagainstthesharks.Withtheirjointefforts,theyfinallysurvivedtheadventure.从前，在靠近海边的一个村庄里，住着一些水手，他们以捕鱼为业。由于他们的祖先是探险家，所以他们都继承了冒险的精神。由于过度捕捞，以及工农业化学物带来的污染，近海水域的鱼越来越少，所以他们不得不到更远的地方去寻找更多的鱼。一天，他们启航去深海捕鱼。旅行前，他们就去哪里捕鱼进行了辩论。由于杰克年龄最大，大家都依照他的安排。杰克虽然40多岁了，但他却聪明机智并充满活力。他说服大家进行一次航海冒险。经过一天的航行，他们最终到达了一个他们未知的水域。他们正在辨认到了何处。突然，有人惊恐地大喊：“小心！鲨鱼！”他们吃惊地发现，他们被数十只鲨鱼包围了，这些鲨鱼每个都有5到10米长。多么可怕的情景啊！大家都非常恐惧。很明显他们已经陷入了麻烦。杰克开始后悔并为自己的冒险决定道歉。但现在他们必须找到一个对付鲨鱼的办法。他们除了跟鲨鱼斗争外别无选择，因为他们很难逃离。一场激烈的斗争开始了，每个人都拿起了武器与鲨鱼搏斗。在他们的共同努力下，他们最终在这场冒险中幸存了下来。
