陕西专升本院校.docx
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陕西专升本院校.docx
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陕西专升本院校
2016年陕西专升本院校
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篇一:
2016年陕西统招专升本英语真题2015年陕西省普通高等教育专升本招生考试试题大学英语Ⅰ.VocabularyandStructure(40points)Directions:
Inthispart,thereare40incompletesentences.Foreachsentencethereare4choicemarkedA,B,C,D.YoushoulddecideonthebestchoiceandmarkthecorrespondingletterontheAnswerSheet.A.bareB.emptyC.blankD.vacantA.sourceB.resourceC.birthD.origincontext.A.approachB.solutionC.mannerD.road4.A.ThatB.WithC.ItD.Whatbooks.A.helpB.helpingC.helpsD.tohelplargeincreaseinfoodprice.A.strengthB.supportC.agreementD.voteA.remindsmeofB.remindsmetoC.remembersmeofD.remembermetoA.twiceasmanyasB.astwicemanyasC.astwicemuchasD.twiceasmuchaslanguage.A.accumulateB.collectC.assembleD.gatheroflife:
drivingeverywhere.A.enviousB.hopefulC.pleasedD.happy11.OneoftherequirementsforafireisthatthematerialA.isheatedB.willbeheatedC.beheatedD.wouldbeheatedA.transferB.adjustC.directD.addA.canwriteB.couldhavewrittenC.couldwriteD.havewritten14.Withthedevelopmentofindustry,thisregionwillsurely.A.developB.profitC.succeedD.thriveIhaverelatives.A.whichB.neverthelessC.whereD.when16.-CouldIborrowyourdictionary?
-I’dgetitforyouIcouldrememberwholastborrowedit.A.exceptthatB.ifonlyC.onlyifD.unless17.Theterroriststoblowuptheplaneiftheirdemandswerenotmet.A.pretendedB.determinedC.threatenedD.proceeded18.Itisgenerallythoughttobeofimportancetoamanthathehimself.A.knewB.knowC.knowsD.mustknow19.Myfriendsusintogoingswimming.A.persuadedB.toldC.invitedD.suggested20.Thetotalcultivatedareais13,000acres,10,000acresareirrigatedfields.A.whichB.ofwhichC.inthatD.ofthat21.Therewasalargecrowdinthesquareagainstthewar.A.protectingB.protestingC.preventingD.promoting22.Icouldnotpersuadehimtoacceptit,makehimseetheimportanceofit.A.ifonlyIcouldnotB.nomorethanIcouldC.orIcouldnotC.norcouldI23.Mr.Greensaidhisclientsoursamplesbytheendoflastmonth.A.didn’treceiveB.hadn’treceivedC.haven’treceivedD.don’treceive24.Languagebelongstoeachifus,totheflower-sellertotheprofessor.A.asfarasB.asmuchasC.asmanyasD.aslongas25.Becauseofthereductionofairpollution,thiscitynowisagoodplace.A.wheretoliveB.whichtoliveC.toliveD.tobelive26.Onlywhenitiscorrectineverydetail.A.hismodelcanreallyrunB.canhismodelreallyrunC.hismodelreallycanrunD.canreallyhismodelrun27.Heistowin.Nooneelseintheracestandsachance.A.boundB.liableC.probableD.apt28.IcontinuedtostudythediscouragementIhandreceived.A.despiteofB.despiteC.inspiteD.inspitethat29.It’stheinthiscountrytogooutandpickflowersonthefirstdayofspring.A.normalB.habitC.customD.use30.Withoutthefrictionbetweentheirfeetandtheground,peoplewouldbeabletowalk.A.innotimeB.onanyaccountC.byallmeansD.innoway31.Hedidn’tallowinhisroom;actuallyhedidnotallowhisfamilyatall.A.tosmoke;tosmokeB.smoking;tosmokeC.tosmoke;smokingD.smoking;smoking32.Withsuchpoorhereallyneedsglasses.A.visionB.viewC.senseD.scene33.theplancarefully,herejectedit.A.TohaveconsideredB.ToconsiderC.HavingconsideredD.Considering34.Findingitdifficulttototheclimateinthecity,hedecidedtomovetothenorth.A.fitB.adoptC.suitD.adapt35.Ourpublictransportationsystemisnotfortheneedsofthepeople.Weneedmorebusesandsubways.A.completeB.adequateC.normalD.good36.Heapologizedhavingtoleavesoearly.篇二:
2016陕西专升本考点-连续知识扩展第三节连续题型一:
讨论分段函数在分段点的连续性解题提示
(一)两种情形:
1.已知分段函数,研究其在分段点的连续性;2.已知分段函数在分段点连续,反求函数关系式中的参数.
(二)方法在分段点x0处连续?
f(x0?
0)?
f(x0?
0)?
f(x0).?
cosx,x?
0?
例1设f(x)?
?
sinx,试问f(x)在x?
0处是否连续?
x?
0?
?
xf(x)?
lim?
cosx?
1解由于f(0?
0)?
lim?
x?
0x?
0f(x)?
lim?
f(0?
0)?
lim?
x?
0x?
0sinx?
1xf(0)?
1即有f(0?
0)?
f(0?
0)?
f(0),f(x)在点x?
0连续.?
1?
xsinx?
a,x?
0?
例2已知f(x)?
?
b,x?
0(a,b为常数),问a,b为何值时,f(x)在x?
0处连续.?
1?
xsin,x?
0x?
1x?
0x?
0x1f(x)?
limx?
sin?
0f(0?
0)?
limx?
0?
x?
0?
xf(x)?
lim?
(sinx?
a)?
1?
a解由于f(0?
0)?
lim?
若要f(x)在x?
0处连续,必有f(0?
0)?
f(0?
0)?
f(0)即1?
a?
0?
b解得a?
?
1,b?
0.题型二:
确定函数的间断点并进行分类解题提示函数y?
f(x)的间断点,是指满足下列三个条件之一的点:
1°f(x)在点x0处无定义;2°在x0点limf(x)不存在;x?
x03°在x0点limf(x)存在,但limf(x)?
f(x0).x?
x0x?
x0求函数y?
f(x)的间断点也就是寻找满足三个条件之一的点.x2?
1例求函数f(x)?
2的间断点,并确定其类型.x?
x?
2解所给函数在点x?
?
1,2没有意义,因此x?
?
1,2是所给函数的间断点.由于在x?
?
1点有f(?
1?
0)?
lim?
f(x)?
lim?
x?
?
1x?
?
1(x?
1)(x?
1)x?
12?
lim?
?
x?
?
1(x?
1)(x?
2)x?
23f(?
1?
0)?
lim?
f(x)?
lim?
x?
?
1x?
1x?
12?
x?
23f(?
1?
0)?
f(?
1?
0),故x?
?
1是第一类间断点且为可去间断点.在x?
2点有x2?
1f(2?
0)?
limf(x)?
lim?
?
x?
2?
x?
2?
(x?
1)(x?
2)x2?
1f(2?
0)?
limf(x)?
lim?
?
x?
2?
x?
2?
(x?
1)(x?
2)故x?
2是第二类间断点且为无穷间断点.题型三:
有关闭区间上连续函数的命题的证明解题提示其基本步骤是:
把已知方程右端项全部移到左端,令其为f(x),再由题设确定区间?
a,b?
,然后验证f(a)?
f(b)?
0即可推证在a与b之间至少存在一个根.例设f(x)在?
a,b?
上连续,且f(a)?
a,f(b)?
b,证明f(x)?
x在?
a,b?
内至少有一实根证令F(x)?
f(x)?
x,则F(x)在?
a,b?
上连续,F(a)?
f(a)?
a?
0,F(b)?
f(b)?
b?
0,则F(a)?
F(b)?
0由零点定理知,在(a,b)内至少存在一点?
,使F(?
)?
0,即f(?
)?
?
也就是说方程f(x)?
x在区间(a,b)内至少有一个根.篇三:
2016陕西统招专升本考点-函数的概念第一节函数一、概念
(一)定义
(二)常见形式1.由一个解析式表示2.分段函数在定义域内的不同点集内由不同(段)的数学表达式表示的函数称为分段函数.3.隐函数如果函数的对应法则是由方程F(x,y)?
0给出,则称y为x的隐函数.4.参数方程表示的函数如果x与y的关系通过第三个变量联系起来,如?
?
x?
?
(t)?
y?
?
(t)5.复合函数y是u的函数:
y?
f(u),而u又是x的函数:
u?
?
(x)6.反函数对数函数y?
logax与指数函数y?
ax互为反函数,其定义域和值域互相对应,一个函数的定义域恰好是另一个函数的值域(三)初等函数(图像,定义域,值域)(四)性质(单调性、奇偶性、周期性、有界性)二、考试题型题型一:
求函数定义域
(1)y?
x?
2?
12x?
12?
ln(5?
x);
(2)y?
?
x?
arcsin.x?
37解
(1)要使y有意义,x应满足x?
2?
0,x?
3?
0,5?
x?
0,即x?
2,x?
3且x?
5,其公共部分为?
2,3?
?
(3,5),故所求定义域为D?
?
2,3?
?
(3,5).?
16?
x2?
0
(1)?
(2)要使y有意义,必须?
2x?
1?
7?
1
(2)?
由
(1)式解得?
4?
x?
4;解
(2)式得?
7?
2x?
1?
7,即?
3?
x?
4.于是,所给函数的定义域为D?
?
?
3,4?
?
?
?
4,4?
?
?
?
3,4?
.例2已知函数f(x)的定义域为?
0,1?
,求f(2x?
3)的定义域.解f(x)的定义域为?
0,1?
,所以f(2x?
3)的定义域为0?
2x?
3?
1,即3?
x?
2.2题型二:
复合函数求法类型一:
已知f(x)和g(x)的表达式,求函数f?
g(x)?
的表达式方法:
只需用g(x)替换f(x)中的x即可.类型二:
已知f?
g(x)?
的表达式,反求f(x)的表达式方法一:
令g(x)?
u,解出x?
?
(u),求出f(u)的表达式,再将u换成x即得f(x)方法二:
将f?
g(x)?
的表达式凑成g(x)的表达式,再将g(x)换成x即得f(x)的表达式例1设f(x)?
x?
x2,求f(x?
1),f?
f(x)?
.解把g(x)?
x?
1代替f(x)中的x,得f(x?
1)?
x?
1?
(x?
1)2?
x?
1x?
2x?
22再把g(x)?
f(x)代替f(x)中的x可得xf?
f(x)?
?
f(x)?
f(x)22x?
x?
?
22x?
2x1?
1?
x2例2已知f(1?
xx?
1)?
2,求f(x)xx1?
11?
x1?
u,得x?
解令,于是f(u)?
?
u2?
u12xu?
1()u?
1再将u换成x,得f(x)?
x?
x.例3.f(sinx)?
cosx,求f(x)222222解f(sinx)?
1?
sinx,另sinx?
t,得f(t)?
1?
t,于是f(x)?
1?
x《2016年陕西专升本院校》出自:
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你有你的木棉,我有我的文章,为了你的木棉,应读我的文章!
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