怎样看待挑战(Challenges)

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forthousandsofyears,peoplehaveaeptedchallengesindifferentfields.therearenotonlyphysicalchallenges,butalsosocialandintellectualchallenges.somepeoplerisktheirlivesinplayingsportstoseehowwelltheycando.otherstrytomakeandinventsomethingtomakelifeeasier.theyallenjoychallenges.

whydopeopleenjoythesechallenges?thereareprobablymanyreasons.oneiscuriosity.theotheristhepersonalfeelingofsuess,ofachievement,andnowadays,forsomepeople,itisabusiness.

today,westillhavemanychallengersbeforeus.medicalsciencefacesthechallengesofconqueringmanydiseaseswhichstillattackhumanbeings.engineersandplannersmustbuildnewcities,designandproducenewkindsoftransportation.scientistsmustdevelopnewformsofenergy.inshort,weliveinanageofchallenges.