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nowadayshumanityisfacedwithalotoftroublesomeproblems:energycrisis,cancer,pollution,populationexplosion,tec.theyarethreateningthesurvivalofhumanity.therefore,somepeoplearepessimisticaboutthefutureofhumanity.
theyarepessimisticbecausetheythinkthatlimitedenergyonearthwillbeexhaustedsoon;incurablediseasesarethreateningmorepeople'slives;pollutionisworseningtheenvironment;populationexplosionwillmakefoodshortageevenmoreserious.
actuallytheyneedn'tworrytoomuchabouttheseproblems.scientistswillhavedevelopednewenergyresourcesbythetimeoilandcoalareusedup.besides,scientistsaremakingathoroughstudyofgenesandtheywillmanagetocurecancerbyadjustingthearrangementofgenes.theyarealsomakingeffortstocontrolpollutionandpopulation.furthermore,allthegovernmentsintheworldareconcernedabouttheseproblemsandtheyahvetakenmeasurestosolvetheseproblems.
therefore,wehaveeveryreasontobesurethathumanbeingswillconquernaturebuttheywillneverbeconquered.