独立重复地投掷一颗均匀的骰子，直到出现6点就停止投掷，设X表示投掷骰子的次数，则X的分布列是______________. A: X123456P1/61/61/61/61/61/6 B: X123456…P1/61/61/61/61/61/6… C: X123…k…P[img=9x43]1803da13460ecf5.png[/img][img=36x43]1803da134eadb99.png[/img][img=57x43]1803da135709664.png[/img]…[img=58x43]1803da135e5a076.png[/img]… D: X123…k…P[img=9x43]1803da13671cd55.png[/img][img=36x43]1803da13703c21c.png[/img][img=57x43]1803da1378489ec.png[/img]…[img=58x43]1803da13822269c.png[/img]…

独立重复地投掷一颗均匀的骰子，直到出现6点就停止投掷，设X表示投掷骰子的次数，则X的分布列是______________. A: X123456P1/61/61/61/61/61/6 B: X123456…P1/61/61/61/61/61/6… C: X123…k…P[img=9x43]1803573572a7b80.png[/img][img=36x43]180357357af3976.png[/img][img=57x43]180357358399321.png[/img]…[img=58x43]180357358bf0f84.png[/img]… D: X123…k…P[img=9x43]180357359488348.png[/img][img=36x43]180357359c7d68a.png[/img][img=57x43]18035735a57969a.png[/img]…[img=58x43]18035735ae0e3f4.png[/img]…

独立重复地投掷一颗均匀的骰子，直到出现6点就停止投掷，设X表示投掷骰子的次数，则X的分布列是______________. A: X123456P1/61/61/61/61/61/6 B: X123456…P1/61/61/61/61/61/6… C: X123…k…P[img=9x43]1803da175d21bb3.png[/img][img=36x43]1803da176510759.png[/img][img=57x43]1803da176e34ee6.png[/img]…[img=58x43]1803da177747ce7.png[/img]… D: X123…k…P[img=9x43]1803da177fbaa74.png[/img][img=36x43]1803da17890c39f.png[/img][img=57x43]1803da1792a9c56.png[/img]…[img=58x43]1803da179bd7a28.png[/img]…

3, 7, .., 49,（） A: 52 B: 61 C: 73 D: 84

",(p/3>0?p/10 : p%3));}

令A=(P 1 P 2 P 3 P 4 P 5 P 6),其中P 2 P 3 P 4 P 5为单位列向量,则( )一定是一个基。 A: P 1 P 2 P 3 P 4 B: P 2 P 3 P 4 P 5 C: P 3 P 4 P 5 P 6 D: P 2 P 3 P 4 P 6

为指针变量赋值,不正确的语句是 A: inta[3],*p;p=a; B: inta[3],*p;p=&a[0]; C: inta[3],*p;*p=a; D: inta[3],*p;p=a+1;

Part2:Cloze(20%)</p>Passage1</p>Tokyoisoneofthoseplacesthatyoucanloveandhateatthesametime.</p>InTokyotherearealwaystoomanypeopleintheplaceswhereIwantto(61).Ofcoursetherearetoomanycars.TheJapanesedriveveryfastwhentheycan.ButinTokyotheyoftenspendalongtimein(62)jams.ThestreetsinTokyoalwayshavealotofpeople(63)foot,andsometimesitisreallydifficulttowalk.</p>The(64)timetobeinthestreetisat11:30atnight.Thatiswhenthenightclubsareclosingandeverybody(65)togohome.Thereare35,000nightclubsinTokyoandyoudonotoftenseeone(66)isempty.</p>Mostpeopletraveltoand(67)fromworkbytrain.Tokyopeoplebuysixmilliontrainticketseveryday.Atmoststations,trainsarriveeverytwoorthreeminutes,but(68)certainhourstheredonotseemtobeenoughtrains.Althoughtheyareusually(69),Japanesetrainsareverygood.Theyalwaysleaveand(70)ontime.</p>61.</p>

3的拉普拉斯变换为（ ）。 A: 0 B: 1/p C: -3/p D: 3/p

P(A) = 1/2, P(B) = 1/3, P(B|A) = 2/3, 则P(A | B) = (