题目内容：
根据以下材料回答题 InJuly1994Jupiter,thelargestplanetinoursolarsystem,wasstruckby21piecesofacomet(彗星)．Whenthefragments(碎片)landedinthesouthernpartofthegiantplanet,theexplo-sionswerewatchedbyscientistshereonearth．Butwhatifourownplanetwashitbyacomet?
Theyearis2094．IthasbeenannouncedthatacometisheadingtowardstheEarth．Mostofitwillmissourplanet,buttwofragmentswillprobablyhitthesouthernpartoftheEarth．Thenewshascausedpanic．
On17July,afragmentfourkilometreswideenterstheEarth'satmospherewithahugeexplo-sion．Abouthalfofthefragmentisdestroyed．ButthemajorpartsurvivesandhitstheSouthAtlan-ticat200timesthespeedofsound．Theseaboilsandanenormouswaveiscreatedandspreads．
ThewallofwaterrushestowardssouthernAfricaat800kilometresanhour．CitiesontheAfricancoastaretotallydestroyedandmillionsofpeoplearedrowned．ThewavemovesintotheIndianOceanandheadstowardsAsia．
MillionsofpeoplearealreadydeadinthesouthernpartoftheEarth,butthenorthwon'tes-capeforlong．Tonsofbrokenpiecesarethrownintotheatmospherebytheexplosions．Asthesunishiddenbycloudsofdust,temperaturesaroundtheworldfalltoalmostzero．Cropsareruined．Warsbreakoutascountriesfightforfood．Ayearlatercivilizationhascollapsed．Nomorethan10millionpeoplehavesurvived．
Coulditreallyhappen?Infact,ithasalreadyhappenedmorethanonceinthehistoryoftheEarth．Thedinosaurs(恐龙)wereontheEarthforover160millionyears．Then65millionyearsagotheysuddenlydisappeared．ManyscientistsbelievethattheEarthwashitbyaspacefragment．
Thedinosaurscouldn'tsurviveinthecoldclimatethatfollowedandtheybecameextinct．Willwemeetthesameend?
WhichofthefollowingisNOTTRUEaccordingtotheauthor'sdescriptionofthedisasterin2094? A．Thewholeworldbecomesextremelycold．
B．AllthecoastalcitiesinAfricaaredestroyed．
C．Thewholemankindbecomesextinct．
D．Thevisitofthecometresultsinwars．
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