An easy but difficult choice2000字作文
Alongwiththerapidstepofsciencedevelopment,menhavegotmoreandmoreachievements.Especiallyinbiologicalfield,scientistsarecreatingmiracleseveryminute.Inrecentyears,theyaredecodedthegenecodeofhumanbeing.Peo...
Alongwiththerapidstepofsciencedevelopment,menhavegotmoreandmoreachievements.Especiallyinbiologicalfield,scientistsarecreatingmiracleseveryminute.Inrecentyears,theyaredecodedthegenecodeofhumanbeing.Peo...