Fourtoonetothecomputer．Thatwasthescore．AlphaGo，aprogramdevelopedbyGoogle'sLondon-basedartificialintelligence （AI） teamDeep-Mind，hasjustbeatenahumanatareallycomplicatedgame．ThefieldofhonorisaGo（围棋） boardinSeoul （首尔），SouthKorea．LeeSedol （李世石），aSouthKorean，isaworldGochampionandisconsideredthegame'smostoutstandingplayer．ButhewasdefeatedbyAlphaGo．
ThecontesthasdrawntensofthousandsofonlinespectatorswhohavefollowedthematchesliveontheInternet．VideosofthecompetitionhavereceivedmorethanfourmillionviewssincethecontestbeganonMarch9．Thefive-gamecontesttookaweekinall．Whileatapre-matchpressconference，Leesaidhewasconfidenthewouldwinfivetonil （零分） or，atleast，fourtoone，hedefeatedAlphaGoonlyonceinthefourthgame．
"WhenIlookbackonthethreegames，evenifIweretogobackandredothefirstgame，IthinkIwouldnotbeabletowinbecauseImisjudgedAlphaGo，"Leesaidatapost-gamepressconferenceonMarch12，followinghisthirdstraightdefeat．Go，whichoriginatedinChinathousandsofyearsago，isplayedona19x19boardwithblackandwhitestones （棋子）．Theboard'ssizemeansthenumberofpossiblemovesisgreaterthanthenumberofatomsintheobservableuniverse．Goissaidtobetheonlygamethattrulybalancestheleftandrightsidesofthebrain．AccordingtoDemisHassabis，theleadingfounderofDeepMind，Goposesamoredifficultprogrammingchallengethanchess．AlphaGo'ssuccessmarkedthemostsignificantmilestoneeverinAI．
YetAlphaGoisonlygoingtogetsmarterasitgathersmoredatafromwhichitlearns．Askedwhethertherewasaceilingtoitsabilities，Hassabissaidhedidnotknow．"Ifthereis，wehaven'tfoundityet．"
25．WhichofthefollowingisTRUEaboutGo？___
A．GoisagamedatingbacktomillionsofyearsagoinChina．
B．Goisplayedona19x19boardwithblackandredstones．
C．ThepossiblemovesofGoisbeyondourimagination．
D．Goistheonlygamethatwilldogoodtoyourbrain．
26．ThecontestbetweenAlphaGoandLeeSedol___．
A．endedupwithfivetonil
B．lastedmorethanaweek
C．arousedpeople'slovetothegameofGo
D．drewmanype