PartIIReadingComprehension(60points,2pointseach)Directions:Thereare6passagesinthispart.Eachpassageisfollowedbysomequestionsorunfinishedstatements.ForeachofthemtherearefourchoicesmarkedA),B),C)andD).Youshoulddecideonthebestchoice.PassageOneQuestions21to25arebasedonthefollowingpassage.Theunderseaworldisverybeautiful.Nowmoreandmorepeoplewanttodiveinthewatertofindthesecretthere.Scubadivingisanewsporttoday.Itcantakeyouintoawonderfulunderseaworld.Youwillfindmanystrangeanimalsinthesea.Someareaslargeasaschoolbus.Manyseaanimalsgiveoutlightinthedarkandsomehavesharpteeth.Duringtheday,thereisenoughlight.Here,underthesea,everythingisblueandgreen.Whenfishswimnearby,youcancatchthemwithyourhands.Whenyouhavebottlesofaironyourback,youcanstayindeepwaterforalongtime.However,youcan’tdivetoodeep.Andyoumustbeverycarefulwhenyoudiveindeepwater.Thedeepseaisnotaneasyplacetolivein.It’scold,andit’sdark,too.Thedeeperitis,thelesssunlightthereis.Atabout3,000feet,thereisnolightatall.Itisverydarkinthesea.Manyfisheshavenoeyes.Somehavebigeyes.Afewhaveeyesononeside.Besidesthecoldandthedarkness,deep-seaanimalsfaceathirddanger—otheranimals.Animalseat!Theymustfindfoodtoeat.Manyanimalseatplants.However,someanimalseatmeat.Thismeanstheseseaanimalshavetwobigjobs.Theyneedtofindanimalsasfood,andtheyhavetotrynottobecomeotheranimals’meal.21.Whydopeoplewanttodiveinthesea?Because__________.A.theywanttocatchfishB.theywanttofindthesecretsoftheunderseaworldC.theseaisdeepD.thereareallkindsofplantsinthesea22.Inthedaytime,whenyoudiveinthesea,you__________.A.canseeeverythinggreenandblueB.can’tbeindangerC.cancatchnothingD.can’tseeanythingclearly23.Howmanydangerswillanimalsmeetinthedeepsea?A.OneB.Two.C.ThreeD.Four24.WhichofthefollowingisNOTtrue?A.Oneanimalfindssomethingtoeat,anditmaybeeatenbyothers.B.Atthedepthof3,000feetunderthesea,manyanimalscanfindtheirwaybyhearingandfeeling.C.Thedeepertheseais,thedarkerandcolderitis.D.Atthedepthof3,000feetunderthesea,allanimalscanfindtheirwaybyseeing.25.Allthedeep-seaanimalseatplants,don’tthey?__________A.Yes,theydo.B.No,theydon’t.

请写出该语句的执行结果 printf(“3 + 2 = %d， 3 / 2 = %d，3 * 2 = %d, 3 % 2 = %d“，3 + 2， 3 / 2 ，3 * 2, 3 % 2）；

与集合{x||x|=3}相等的集合为 A: {3} B: {-3) C: 3,-3 D: {3,-3}

QT600－3中，3表示（）。 A: Z≤3% B: A≥3% C: Rm≥3% D: ReL≤3%

－1/3的相反数是（） A: -3 B: 1/3 C: －1/3 D: 3

设矩阵[img=172x51]17de8d6dc46b5ce.png[/img]，则 A: a=3，b=-1,c=1,d=3 B: a=-1，b=3,c=1,d=3 C: a=3，b=-1,c=0,d=3 D: a=-1，b=3,c=0,d=3

下列各项中，哪一项不是Kirsch边缘检测中构建的模板（） A: [5 5 5；-3 0 -3；-3 -3 -3] B: [-3 5 5；-3 0 5；-3 -3 -3] C: [5 5 5；-3 -3 0；-3 -3 -3] D: [-3 -3 -3；-3 0 -3；5 5 5]

3⊥3与3┬3舌轴嵴形态的区别是（） A: 舌轴嵴3┬3与3┬3同样明显 B: 舌轴嵴3┬3不如3⊥3明显 C: 舌轴嵴3┬3比3⊥3明显 D: 舌轴嵴3┬3与3⊥3均不明显

一日三餐的最佳能量分配是：（） A: 3：3：4 B: 4：3：3 C: 3：4：3 D: 2：3：5

函数y=log2(x2-9)的定义域是（） A: (3,+∞） B: （-∞，-3）U（3，+∞） C: （-∞，-3） D: （-∞，-3]U[3,+∞）