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注：不含主观题第1题多选题(2分)Inhtml,thefollowing()tagsbelongtothebasiccomponentsofhtmldocuments.A<style></style>B<body></body>C<html></html>D<head></head>E
<title></title>正确答案：BCD第2题单选题(1分)WhichofthefollowingstatementsabouttheHeadingstagsisincorrect?()ATheyalloccupyasingleline.BHeadingstagsare
<h0></h0>,<h1></h1>,,and<h6></h6>.CThefontsizeofh6tagisthesmallest.DThetagsareusedtoboldthecontent.第3题单选题(1分)Whichofthefollowingstatementsiscorrect?()A<b>tagcanwrapcontentautomatically.B<br>tagshould
endwith</br>tag.C<title>tagshouldendwith</title>tag.D<p>isoneoftheheadingstags.第4题单选题(1分)Whichofthefollowingtagsisnotalineelement?()A<b>tagB<p>tagC<strong>tagD<em>
tag第5题单选题(1分)Whichofthefollowingtagsisnotanemptyelement?()A<p>tagB<br>tagC<img>tagD<hr>tag第6题单选题(1分)Whichofthefollowingstatementsistrueaboutthe<img>tag?()ATheattributeusedtointroducethepictureaddressinthe<img>tagisurl.BWhenthereisenoughspacefortwo<img>tags,thepictureswillbearrangedvertically.CThealtattributeinthe<img>tag:Whenthemousepassesthepicture,thevalueinaltisdisplayedbelowthemousepointer.DThetitleattributeinthe<img>tag:
Whenthemousepassesoverthepicture,thevalueintitleisdisplayedbelowthemousepointer.第7题单选题(1分)Inhtml,Wecaninsertanimageusingthe<img>tag.Whichofthefollowingoptionsiscorrectaboutthesrcattributeof<img>?()AUsedtosettheformatofpicturefile.BUsedtosetthelocationofthepicturefile.CUsedtosetthetextdisplayedaroundthepicture.DUsedtosetthetextdisplayedwhenthemousepointstothepicture.第8题单选题(1分)Inhtml,Whichexpressioncandirectlyopentheemailtooloftheclienttosendemailthroughthelinkonthewebpage?()A<ahref="telnet:xiaoming@">sendfeedbackinformation</a>B<ahref="mail:xiaoming@">sendfeedbackinformation</a>
C<ahref="ftp:xiaoming@">sendfeedbackinformation</a>D<ahref="mailto:xiaoming@">sendfeedbackinformation</a>第9题单选题(1分)Inhtml,whatkindoftagcanbeusedforboldtypebesides<strong>?A<b>B<u>C<em>D<h>第10题单选题(1分)WhichofthefollowingitemsisnotincludedintheheadoftheHTMLfile?AAuthorinformation,webpagedescription,baseaddressBAutomaticrefresh,CSSstyleCWebpagetitleandkeywordsDComments,formfields第11题填空题(1分)Inhtmlrepresentationsoffilepath,"../"isusedfor____正确答案：:["Returningthepreviousdirectoryofthecurrentdirectory","thepreviousdirectoryofthecurrentdirectory","theparentdirectoryofthecurrentdirectory"]test1.2第1题单选题(1分)Inhtml,thecodeofdescriptionlistis().A<dt><dl><dd></dd></dl></dt>B<dd><dt></dt><dl></dl></dd>C<dt><dl></dl><dd></dd></dt>D<dl><dt></dt><dd></dd></dl>第2题单选题(1分)Howmanyoptionsaretheretodescribethelisttagcorrectly?
①.<ul>tagdefinesanorderedlist.
②.<ul>,<dl>and<ol>tagshavetheirownupperandloweroutermargins.
③.The<dt>taginthe<dl>taghasitsownleftmargin.
④.The<ol>tagisanunorderedlist.A1B2C3D4第3题单选题(1分)Whichofthefollowingitemsisnotapartofthetabletag?()A<tbody>
B<thead>C<ttitle>D<tfoot>第4题单选题(1分)Whenmakingaform,whenyouneedtospecifyradioboxes'attributes,youcanonlycallthemagroupifyouspecifythesame()attributes.AtypeBnameCvalueDmethod第5题单选题(1分)Inthefollowingdescriptionoptionsabouttheformtag,theerroroptionis().AFormsareusuallyusedtogatheruserinformation.BInthe<form>tag,themethodattributespecifiesthemethodofsubmittingformdata.CInthe<form>tag,theactionattributespecifiesthelocationoftheformhandler.DInthe<form>tag,thevalueofthetypeofthecheckboxisradio.
第6题单选题(1分)Whenmakingaform,the()tag(s)shouldbeusedtocreatetheoptionmenu.Aselectandinput
BinputCinputandoptionDselectandoption
第7题单选题(1分)Whichofthefollowingisnotabutton?(
)Atype=”button”Btype=”reset”Ctype=”image”Dtype=”submit”第8题单选题(1分)Toimplementthecheckboxintheform,thetypeattributeintheinputtagshouldbe(
)AradioBcheckboxCtextDselect第9题单选题(1分)Makegenderoptionsintheform.Whichofthefollowingoptionsiscorrect?()A<inputtype="radio"name="sex"value="0">man<inputtype="radio"name="sex1"value="1">womanB<inputtype="radio"name="sex"value="0">man<inputtype="radio"name="sex"value="1">womanC<inputtype="checkbox"name="sex"value="0">man<inputtype="checkbox"name="sex"value="1">womanD<inputtype="checkbox"name="sex"value="0">man<inputtype="checkbox"name="sex1"value="1">woman第10题单选题(1分)Informmaking,thedifferencebetweenthetextboxforenteringpasswordandthesingle-linetextboxforenteringtextis().ASingle-linetextboxcanonlybeusedtoenterwordsandletters,notnumbers.BThereisnodifferencebetweenapasswordtextboxandasingle-linetextbox.CThetypeattributeofpasswordtextboxispassword,andthetypeattributeofsingle-linetextboxistext.DOnlynumberscanbeenteredinthepasswordtextbox.第11题填空题(3分)Thetabletagis_________.Generally,<td__________="2">******</td>isusedtomergetwocellsacrosscolumns.<td
________="4"align="right">****</td>isusedtomerge4cellsacrossrows.正确答案：:["<table></table>"]正确答案：:["colspan"]正确答案：:["rowspan"]test2.1第1题单选题(1分)Whichofthefollowingstatementsaboutexternalstylesheetsiswrong?()AThefileextensionis.cs.BThecontentoftheexternalstylesheetsdoesnotneedtousethe<style>tag.CWecanusethe<link>tagtointroduceexternalstylesheets.DUsingexternalstylesheetscanmakethewebsitemoreconciseandkeepthestyleuniform.第2题单选题(1分)Whichofthefollowingwaysistousetheclassselectortodefinestyles?()Ap{color:red;}B.box{color:red;}C#p{color:red;}Dp,h2{color:red;}第3题单选题(1分)Whichofthefollowingistrueaboutcsssyntax?()A.box[color:red,background:yellow]B.box{color:red;background:yellow}C.box{color:red,background:yellow}D.box[color,red;background:yellow]第4题单选题(1分)Whichofthefollowingstatementsaboutselectoristrue?()AIdselectorhashigherprioritythanclassselector.BTagselectorhashigher
priority
thanclassselector.CClassselectorcanonlybeappliedtoacertainkindofhtmlelements.DClassselectorswiththesamenamecannotbeusedmultipletimesinonepage.第5题单选题(1分)Whichofthefollowingstatementsistrueaboutstyleintroduction?()AInlinestyleistosetstyleattributeforelements,whichonlytakeseffectforthecurrenttag.BTheinternalstyleistosetthestyleattributefortheelement.CTherelattributeinthelinktagisusedtosetthepathoftheexternalcssfile.D@importbelongstohtmltag.第6题单选题(1分)Whichofthefollowingstatementsaboutclassandidselectorsisincorrect?()AClassselectorisdefinedby.Classname{style}.BTheapplicationmethodofidselectoris<tag_nameid="idname">.CTheapplicationmethodofclassselectoris<tag_nameclass="classname">.DTheidselectorandtheclassselectorareonlydifferentinwriting,andthereisnodifferenceinapplicationandmeaning.第7题单选题(1分)Whichofthefollowingstatementsaboutidselectorisincorrect?()AThesyntaxformatofidselectoris"#idname".BIfyouwanttousetheidselector,youshouldfirstdefineanidattributevaluefortheelement,suchas:<divid="a"></div>.C#selectorismoresuitablefordefiningclassstyles.DAnidnamecanonlycorrespondtoaspecificelementobjectofadocument.第8题单选题(1分)Whichstatementaboutstylepriorityisincorrect?()ACssstylesdirectlydefinedontagshavethehighestlevel.BInternalstyleshavelowerprioritythaninlinestyles.CExternalstylesheetshavethelowestlevel.DWhentheattributesinthestyleconflict,thepresetcomesintoeffect.第9题多选题(2分)Whatarethecorrectstatementsaboutlinkandimport?()AImportstylesareusedinthe<head>tagasfollows:<style>@importurl("");</style>.BWhenthepageisloaded,theCSSreferencedbylinkwillnotbeloadedatthesametime.CCSSreferencedby@importwillnotbeloadeduntilallpagesaredownloaded.DPagesthatrefertoCSSinthewayof@importwillappearunstyledflickerwhenloading.正确答案：ACD第10题填空题(1分)Whataretheseveralwaystointroducecss?
________________________
正确答案：:["inline,internal,external"]第11题填空题(2分)Commentsincssbeginwith_________，andendwith_____________.正确答案：:["/*"]正确答案：:["*/"]第12题填空题(1分)Selectorscommonlyusedincssinclude
idselector(1),classselector(2)andtagselector(3),andtheirpriorityis______________.正确答案：:["idselector,classselector,tagselector","123","123"]第13题填空题(1分)Incss,whenyouchoosetousetheidselector,thestylenameshouldbeprecededbyanindicator___________.正确答案：:["#"]test2.2第1题单选题(1分)Whichofthefollowingstatementsabout
:afterpseudo-classobjectistrue?()
AThe:afterpseudoelementaddscontentaftertheelement.BThe:afterpseudoelementcanonlybeappliedtohyperlinktaga.CUsing:afterpseudoelementmaycausefloatingelementtocollapse.DMissingthecontentattributeinthe:afterpseudoelementcanstillbeusednormally.第2题单选题(1分)Thefollowingcodesneedtoboldthetext1fontofthefirstitaginallptags,and
whatcodeshouldbefilledintheblankspace?()<html><head><styletype="text/css">
</style></head><body><p>some<i>text1</i>.some<i>text2</i>.</p><p>some<i>text1</i>.some<i>text2</i>.</p><i>text1</i>.some<i>text2</i></body></html>Ap
i:first-child{font-style:bold;}Bi:last-child{font-weight:bold;}Cp>i:first-child{font-weight:bold;}Dp>i{font-weight:bold;}第3题单选题(1分)Whichofthefollowingstatementsaboutpseudoclassesisincorrect?()
A
:first-childand:last-childselectorsbelongtothesequenceselectors.B:nth-child(1)and:first-childareonlydefineddifferentlyandhavethesamemeaning.C.box:nth-child(2)representsthesecondelementdirectlyundertheboxelement.Dp>i:first-childmeanstoselectthefirst<i>elementofallmatched<p>elements.
第4题单选题(1分)Intheultaginadivwhoseclassattributeissetto"box",howtochoosethelibackgroundcolorofevenitemstobered?Whichofthefollowingcodesiscorrectlyentered?()A.boxullinth-child(0,2,4){background-color:red;}B.boxullinth-child(2n){background-color:red;}C.boxulli:nth-child(0,2,4){background-color:red;}D.boxulli:nth-child(2n){background-color:red;}第5题单选题(1分)Thea:hoverindicatesthestateofhyperlinktextat().AmousepressBmouseoverCnotvisitedDmouseclick第6题单选题(1分)Whichofthefollowingstatementsabouttagaiscorrect?()Aa:linkindicatesthevisitedstatus.Ba:hovercannotbeusedalone.CTheataghasatotalof4states.DWhentheatagisindifferentstates,theordercanbechangedatwill.第7题单选题(1分)Whichofthefollowingstatementsabout:beforeisnottrue?()AWithoutanyconversion,settingwidthandheightfor:beforeelementdoesnottakeeffect.BSettingwidthandheightfor:beforeelementtakeseffectwithoutanyconversion.CTheuseof:beforeelementisbasicallythesameasthatof:after.DThecontentattributeinthe:beforeelementcannotbeomitted,evenifthecontentisempty.第8题单选题(1分)Whichofthefollowingstatementsaboutelementconversioniswrong?()ABlockelementcanbeconvertedintolineelementusingdisplay:inline.BThedisplay:inline-blockconversioncanconvertanelementintoablock-levelelement,andthenitcanoccupyasingleline.CLineelementcanbeconvertedintoblockelementbyusingdisplay:block.DImg
element
canbeconvertedintoblockelementtoremovegapsbetweenimages.第9题单选题(1分)Whichofthefollowingstatementsaboutelementhidingisincorrect?()AYoucanusedisplay:nonetohideelementwithoutoccupyingtheoriginalspace.BTheoverflow:hiddenisusedforoverflowhiding.CTheopacity:0canalsobeusedtohideelement,butittakesuptheoriginalspace.DThevisibility:nonecanalsobeusedtohideelement.第10题单选题(1分)Whichofthefollowingstatementsisincorrectaboutoverflow?()ATheoverflowattribute
isusedtocontrolhowcontentisdisplayedwhenitoverflowstheelementbox.BTheoverflowattribute
cancontrolwhetherscrollbarsareaddedinthecorrespondingelementintervalwhenthecontentoverflowstheelementbox.CTheoverflow:noneattributeisusedtocliptheoverflowcontentandtherestofthecontentisinvisible.DTheoverflow:automeansthatifoverflowisclipped,ascroll-barshouldbeaddedtoseetherestofthecontent.test2.3第1题单选题(1分)Whichofthefollowingstatementsaboutfloatingiswrong?()AThefloatingofelementsishorizontal,whichmeansthatelementscanonlymoveleftandright,butnotupanddown.BFloatingisveryusefulinwebpagelayout.CElementsbeforefloatingelementwillalsobeaffected.DThetextelementafterthefloatingelementwillsurroundit.第2题单选题(1分)Therounddotbeforetheunorderedlistitem<li>canberemovedby().Aclear:both;Bfont-style:none;Clist-style:none;Dlist-style:normal;第3题多选题(2分)(Multiple-choicequestion)
Whichoptionsarerightaboutfloatingelementcharacteristics?AFloatingelementisseparatedfromthedocumentflow.BThefloat:topwill
settheelementtofloatupwards.CAfterthelineelementissettofloat,thelineelementwillautomaticallyturnintoablockelement.DFloatingelementscannotholduptheblockthatcontainsit.正确答案：ACD第4题多选题(2分)(Multiple-choicequestion)Incss,whatarethecommonmethodstoclearfloating?()AAddanemptyblockelementafter
the
floatingelement.BAddanemptylineelementafterthefloatingelement.CSettheheightoftheparentelementofthefloatingelement.DSettoclearfloatingbymeansofpseudoclass.ESetfloatingforparentelement
ofthefloatingelement.正确答案：ACDE第5题单选题(1分)float<!DOCTYPEhtml><html><head><metacharset="utf-8"><title>float</title><style>.about{width:500px;}.aboutimg{float:left;width:200px;}</style></head><body><div
class="about"><imgsrc="../img/image1.jpg"><p>words,words,words,words,words,words,words,words,words,words,words,words,words,words,words,words.</p></div></body></html>Aftertheexecutionoftheaboveprocedures,thelocationofthepictureandtextwillbe().ATextoverlaysonpicture.BTextisonthetop,andpictureisonthebottom.CPictureisontheleft,andtextisarrangedontheright.DPictureisontheleft,andtextsurroundsthepicture.第6题单选题(1分)Aboutthecharacteristicsoffloatingelements,whichofthefollowingstatementsiswrong?()AIfthewidthofthecontainerboxislessthanthesumofthewidthsofallfloatingelements,thefloatingelementswillwrap.Atthistime,iftheheightsofthefloatingelementsaredifferent,ablankblockwillappear.BFloatingelementsoccupytheoriginalspace.CThetextwillsurroundthefloatingelementwhenthefloatingelementiswiththetext.
DFloatingcanonlyfloatleftandright,notupanddown.第7题单选题(1分)Whichoptioniswrongaboutfloat?()Afloat:leftBfloat:centerCfloat:rightDfloat:none第8题单选题(1分)Whichofthefollowingisnotafloatingelementcharacteristic?()AFloatingelementswillbeautomaticallysettoblockelementsfordisplay.BAfloatingelementisinthesamepositionintheverticaldirectionaswhenitisnotdefinedasfloating.CThefloatingelementishorizontal,anditwillbeascloseaspossibletotheedgeofitsparentelement.DBlockelementswillnotdrillunderfloatingelementsandwillnotbecoveredbyfloatingelements.第9题填空题(1分)Afterthelineelementfloats,it___________(will/willnot)becomeablockelement.正确答案：:["will"]test2.4第1题单选题(1分)Howtocalculatetheactualwidthofstandardboxmodel?()AwidthBleftandrightpaddings+widthCleftandrightmargins+leftandrightpaddings+width+leftandrightbordersDleftandrightborders+leftandrightpaddings+width
第2题单选题(1分)Thecorrectstatementaboutpadding:20px30px40pxis().Apaddings:20pxspaceup,30pxspacedown,40pxspaceleftandrightBpaddings:20pxspaceup,40pxspacedown,30pxspaceleftandrightCmargins:20pxspaceup,30pxspacedown,40pxspaceleftandrightDmargins:20pxspaceup,40pxspacedown,30pxspaceleftandright第3题单选题(1分)Whichofthefollowingdoesnotbelongtothepaddingattribute?()Apadding-leftBpadding-headCpadding-bottomDpadding-right
第4题单选题(1分)Whichofthefollowingisnotanattributeforsettingborder?()Aborder-styleBborder-widthCborder-colorDborder-size第5题多选题(2分)Incss,iftheborderisnotdisplayed,whichofthefollowingstatementsiscorrect?()ASetborder:0pxsolidblue;BSetborder-color:transparent;CSetborder:none;DSetborder:1pxsolidtransparent;
正确答案：AC第6题单选题(1分)Thecorrectstatementaboutborderofboxis().ATheborder-style
represents
thethicknessoftheborder.BTheborder:10pxsolidred;representsareddottedborderwithathicknessof10px.CTheborder:10pxred;representsaredborderwithathicknessof10px.DTheborder-bottom:10pxdashedgreen;represents
thethicknessofthebottomborderis10pxanditisadottedgreenline.第7题填空题(1分)Theupanddownmarginsofblockelementsare20px,and______________isusedforaligningcenter
horizontally.正确答案：:["margin:20pxauto;"]第8题填空题(1分)Thepictureaboveshowsadivblockwithaborderof1px,withtotalwidthof215px(includingborder)andtheshadedareaispadding-left:25px;,thenthewidthofthisdivshouldbesetto___________px.正确答案：:["188"]第9题填空题(1分)Howtoabbreviatethefollowingcode？border-width:1px;border-color:#000;border-style:solid;Abbreviatedas:_________
正确答案：:["border:1pxsolid#000;","border:1pxsolid#000"]test2.5第1题单选题(1分)Inhtml,whichofthefollowingstatementsaboutfontattributesincssstylesistrue?()AThefont-sizeisusedtosetthesizeofthetextfont.BThefont-familyisusedtosetthealignmentoftext.CThefont-styleisusedtosetthefontoftext.DThetext-decorationisusedtosetthefontshapeoftext.第2题单选题(1分)Tosetthetextstyleoftheptagwithclassname"box"inthedivtagto:thetextiscentered,thefirstlineisindented2em,thefontsizeis20pxandthelineheightis30px.
Whichofthefollowingiswrittencorrectly?()A.box.p{
line-height:30px;
font-indent:2em;
text-align:center;
font-size:20px;}B.boxp{
line-height:30px;
text-indent:2em;
text-align:center;
font-size:20px;
}C.box.p{line-height:30px;text-indent:2em;text-align:center;font-size:20px;
}D.boxp{text-height:30px;text-indent:2em;text-align:center;font-size:20px;
}第3题单选题(1分)Whichofthefollowingcan'tbeusedformakingtextbold?()AUse<b></b>tagsinhtmlBUse<strong></strong>tagsinhtmlCUsefont-weight:boldinCSSDUsefont-style:stronginCSS第4题单选题(1分)Whichofthefollowingdescriptionsofthecsscodesiscorrect?()
.box
p{font:60italic20px/80px'arial';
}AThefirstelement60inthefontattributerepresentsthefontsize.BTheseelementsinthefontattributecanbetransposedatwill.CThelastelement'arial'inthefontattributecanbeomittedwithoutwriting.DThe80pxinthefontattributeindicatesthelineheightofthetextintheptag,whichcanbeomitted.第5题单选题(1分)Incss,thebackgroundimageneedstobelocatedinthelowerleftcornerofthebox.Thecodesshouldbewrittenas:()Abackground-image:leftfootBbackground-image:leftbottomCbackground-position:leftfootDbackground-position:leftbottom第6题单选题(1分)Incss,whatistheincorrectdescriptionaboutthefollowingbackgroundcode
?()
.box{background:url("../image/author-1.jpg")
no-repeat
center/50%
red;}ATheabovecodeindicatesthatthebackgroundcolorisred,theimageiscentered,thesizeis50%,andtheimageisnotrepeated.BIfno-repeatisdeleted,theimagewillnotrepeat.CIftheelementurl("../image/author-1.jpg")isdeleted,aredbackgroundwillbedisplayed.DIfno-repeatischangedtorepeat-x,theimageishorizontallyrepeated.
第7题单选题(1分)Tosetthebackgroundimageofawebpageas"bg.jpg",whichofthefollowingiscorrect?()A<bodybackground-image="bg.jpg">B<bodybackground="bg.jpg">C<bodyimage="bg.jpg">D<bodybackground-color="bg.jpg">第8题单选题(1分)InCSSstyle,themeaningofbackground-position:-10px20pxis().AThebackgroundimageisshiftedtotherightby10pxandupwardby20px.BThebackgroundimageisshiftedtotherightby10pxanddownwardby20px.CThebackgroundimageisshiftedtotheleftby10pxandupwardby20px.DThebackgroundimageisshiftedtotheleftby10pxanddownwardby20px.第9题单选题(1分)Regardingthefollowingcsscodes,whichoffollowingisincorrect?()
<pstyle="border:1pxsolidred;
font-size:10px;background-color:green">AThebackgroundcoloroftheparagraphisred.BThebordersizeoftheparagraphis1px.CThefontsizeoftheparagraphis10px.DThebordercoloroftheparagraphisred.第10题填空题(1分)Thefollowingcssstylecodes:<style><!--body{
background-image:url("bg1.jpg");background-repeat:repeat-y;}--></style>Thefunctionofthecodesis___________________.正确答案：:["Repeatthepicturevertically","Repeattheimagevertically"]第11题填空题(1分)Thecssstatementusedtoinsertthebackgroundimage(imagepathandnameis"/img/")intothewebpageandtileitis:div{___________________;background-repeat:repeat;}正确答案：:["background-image:url(/img/)","background-image:url(\"/img/\")"]test2.6第1题单选题(1分)Incss,weuse()tosetthestackingorderofelements,bydefault,itsvalueis().Az-index0Bx-index0Cz-index1Dx-index1第2题单选题(1分)Whichofthefollowingstatementsaboutrelativepositionisincorrect?()ARelativepositionmeansmovingrelativetotheelementitself.BAftermovingtherelativepositionelement,theoriginalspaceoccupiedbyitwillnotchange.COnlyaftersettingtherelativeposition,top,left,right,bottom,andz-indexwilltakeeffect.DWecanuse
position:relativetosettherelativepositionofthehtmlelement.
第3题单选题(1分)Whichofthefollowingstatementsaboutabsolutepositioniscorrect?()AYoucanuse
position:fixed
tosetabsoluteposition.BThelocationofanabsolutepositionelementisrelativetoitsparentelement.CThelocationofanabsolutepositionelementmayberelativeto<html>.DAbsolutepositionmakestheelementoccupytheoriginalspace.第4题单选题(1分)Incss,toaligntheboxverticallywiththecenterofthepage,pleasefillintheblankspace,whichoptioniscorrect?().box{position:;top:0;bottom:0;left:0;right:0;margin:;width:300px;height:200px;border:2pxsolid#ccc;
}Aabsolute
50%Babsolute
autoCrelative50%Drelativeauto第5题单选题(1分)Whichofthefollowingitemsdoesnotbelongtothepositionattribute?()ArelativeBabsoluteCfixedDauto第6题单选题(1分)Whichofthefollowingstatementsaboutfixedpositionelementiswrong?()ATheelement
positionrelativetothebrowserwindowisfixed.BFixedpositionelementcannotoverlapwithotherelements.CFixedpositionmakesthepositionoftheelementindependentofthedocumentflow.DFixedpositionmakestheelementoccupynospace.第7题单选题(1分)Tocenteralayerinthemiddleofthebrowser,howtoset?()Apadding:50%50%Bmagin:50%50%Cmagin:0autoDNoneoftheaboveiscorrect.第8题填空题(3分)Incss,toalignboxverticallywiththecenterofthepage,pleasefillinthefollowingblankcodespace..box{position:
________;left:50%;top:50%;margin-left:
_________;margin-top:
_________;width:300px;height:200px;border:2pxsolid#ccc;}正确答案：:["absolute"]正确答案：:["-152px"]正确答案：:["-102px"]test3.1第1题单选题(1分)Inthefollowingstatements,whichonesetsthetitleoftheHTMLpageto"HTMLExercise"?()A<head>HTMLpractice</head>B<title>HTMLpractice</title>B.<spanstyle="white-space:pre;"></span><title>HTMLpractice</title>B.<spanstyle="white-space:pre;"></span><title>HTMLpractice</title>HTMLpracticeC<h1>HTMLpractice</h1>D<t>HTML
practice</t>第2题单选题(1分)ThefollowingcodeusestheIDattributeofanHTMLelementtoapplyastyletoaparagraphonawebpage:
<pid="firstp">Thisisthefirstparagraph</p>Whichofthefollowingdefinitionsofstylerulesiscorrect?()A<styletype="text/css">
p{color:red}</style>B<styletype="text/css">
*firstp{color:red}</style>C<styletype="text/css">.firstp{color:red}</style>D<styletype="text/css">#firstp{color:red}</style>第3题多选题(2分)(Multiple-choicequestion)Thereisastylesheetdocumentnamedsheet1.css,andnowweintendtoapplythestylesdefinedinthisstylesheetdocumenttothecurrentpage.Whichofthefollowingmethodsarecorrect?()AInsertthefollowingcodeintothe<head>sectionofthewebpage:
<styletype="text/css">
@importurl('sheet1.css');
</style>BInsertthefollowingcodeintothe<head>sectionofthewebpage:
<linkrel="stylesheet"type="text/css"href="sheet1.css">CInsertthefollowingcodeintothe<head>sectionofthewebpage:
<styletype="text/css">
<linkrel="stylesheet"
type="text/css"href="sheet1.css">
</style>DThestylesheetdocumentisreferencedinthestyleattributeofeachelementtobestyledwithsheet1.css.正确答案：AB第4题单选题(1分)Whichofthefollowingoptionsappliesinlinestyle?()A<p
class="style">B<p
style="color:red;">C<p
id="content">D<pclass="style1style2">第5题单选题(1分)Inwebpages,()isusuallyusedtocompletegenderselection.AcheckboxBtextboxCpasswordboxDradiobutton第6题单选题(1分)ClearingfloatwithclearattributeisusedinCSS2.0,whichofthefollowingitemsisnotincludedintheclearattributevalues?
()AbothBleftCrightDcenter第7题单选题(1分)Tocreateamultilinetextinputboxintheform,theinitialvalueof
textinputboxis"thisisamultilinetextbox".Whichofthefollowingstatementsiscorrect?()A<textareaname="text1"value="thisisamultilinetextbox"></textarea>B<inputtype="text"value="thisisamultilinetextbox"
name="text1">C<inputtype="textarea"
name="text1"value="thisisamultilinetext">D<textareaname="text1"cols=20rows=5>thisisamultilinetextbox</textarea>第8题单选题(1分)Thefollowingcodesnippetisapartofthestylesettingsofawebpage:
<styletype="text/css">
.blue{color:blue}
.red{color:red}
</style>Nowitisrequiredtosetthefirsth1headingtoredandthefirstparagraphtoblue.Whichofthefollowingcodesiscorrect?()A<h1
id="red">thefirstheading</h1><p
id="blue">thefirstparagraph</p>B<h1color:red>thefirstheading</h1><pcolor:blue>thefirstparagraph</p>C<h1
class="red">thefirstheading</h1><pclass="blue">thefirstparagraph</p>D<h2class="red">thef
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