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