Practice3<br/>Fortherestofthemonth,anepidemic(流行病)willsweepacrosstheUS.Itwillkeepkidshomefromschool.Collegestudentswillignorepilesofhomework.Employeeswillsuddenlylosetheirabilitiestoconcentrate.<br/>Thedisease,knownas“MarchMadness”,referstotheyearly65-teamUSmen’scollegebasketballtournament.ItbeginsonMarch15andlaststhroughthebeginningofApril.Teamscompeteagainsteachotherinasingleeliminationtournamentthateventuallycrownsanationalchampion.<br/>Nearly20millionAmericanswillfindthemselvesprisonersofbasketballfestivalmadness.<br/>Thefuncomespartlyfromguessingthewinnersforeverygame.Friendscompeteagainstfriends,husbandsagainstwives,andcolleaguesagainstbosses.<br/>Big-nameschoolsareusuallyfavoredtoadvanceintothetournament.Buteachyeartherearedarkhorsesfromlittle-knownuniversities.<br/>Thisaddstothemadness.Watchingateamfromaschoolwith3,000studentsbeatateamfromaschoolwith30,000,formanyAmericans,isanexcitingexperience.Lastyear,thelittle-knownGeorgeMasonUniversitywasoneofthefinalfourteams.Manypeoplehadneverevenheardoftheuniversitybeforethetournament.<br/>Collegebasketballplayersarenotpaid,sothegameismoreaboutmakinganamefortheiruniversityandthemselves.Butthatdoesn’tmeanmoneyisn’tinvolved.<br/>About$4billionwillbespentgamblingontheevent.Accordingto<em>MediaLife</em>magazine,theeventwilldrawover$500millioninadvertisingrevenuethisyear,toppingthepost-seasonrevenue,includingthatoftheNBA(全国篮球协会).

<spanstyle="display:block;text-align:center;">Practice3</span>Fortherestofthemonth,anepidemic(流行病)willsweepacrosstheUS.Itwillkeepkidshomefromschool.Collegestudentswillignorepilesofhomework.Employeeswillsuddenlylosetheirabilitiestoconcentrate.<br/>Thedisease,knownas“MarchMadness”,referstotheyearly65-teamUSmen’scollegebasketballtournament.ItbeginsonMarch15andlaststhroughthebeginningofApril.Teamscompeteagainsteachotherinasingleeliminationtournamentthateventuallycrownsanationalchampion.<br/>Nearly20millionAmericanswillfindthemselvesprisonersofbasketballfestivalmadness.<br/>Thefuncomespartlyfromguessingthewinnersforeverygame.Friendscompeteagainstfriends,husbandsagainstwives,andcolleaguesagainstbosses.<br/>Big-nameschoolsareusuallyfavoredtoadvanceintothetournament.Buteachyeartherearedarkhorsesfromlittle-knownuniversities.<br/>Thisaddstothemadness.Watchingateamfromaschoolwith3,000studentsbeatateamfromaschoolwith30,000,formanyAmericans,isanexcitingexperience.Lastyear,thelittle-knownGeorgeMasonUniversitywasoneofthefinalfourteams.Manypeoplehadneverevenheardoftheuniversitybeforethetournament.<br/>Collegebasketballplayersarenotpaid,sothegameismoreaboutmakinganamefortheiruniversityandthemselves.Butthatdoesn’tmeanmoneyisn’tinvolved.<br/>About$4billionwillbespentgamblingontheevent.Accordingto<em>MediaLife</em>magazine,theeventwilldrawover$500millioninadvertisingrevenuethisyear,toppingthepost-seasonrevenue,includingthatoftheNBA(全国篮球协会).

函数的定义域是/ananas/latex/p/1132315: (-∞, -3)∪(-3, +∞)|(-∞, -3)∪(-3, 3)∪(3, +∞)|(-∞, -3)∪(3, +∞)|(-∞, 3)∪(3, +∞)

智慧职教: 按自然数的乘法按定义计算3×5. 解   由定义5知3x5=(3x4) 3 =[(3x3) 3] 3 ={[(3x2) 3] 3} 3 ={{[(3x1) 3] 3} 3} 3 ={{[(3 3) 3] 3} 3} ={[(6 3) 3] 3} =(9 3) 3 =12 3=15 上述计算是（   ）的

3√3—/3√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

????3???3?3????????????

第 31 题 11/3 ， 7/3 ， 1， ， -5/3 A．7/3 B．-1/3 C．5/3 D．4/3

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