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![An easy but difficult choice2000字作文]( "An easy but difficult choice2000字作文")
An easy but difficult choice2000字作文
Alongwiththerapidstepofsciencedevelopment,menhavegotmoreandmoreachievements.Especiallyinbiologicalfield,scientistsarecreatingmiracleseveryminute.Inrecentyears,theyaredecodedthegenecodeofhumanbeing.Peo...
