Exercise28 Directions:Inthissection,youaregoingtoreadapassagewithtenstatementsattachedtoit.Eachstatementcontainsinformationgiveninoneoftheparagraphs.Identifytheparagraphfromwhichtheinformationisderived.Youmaychooseaparagraphmorethanonce.Eachparagraphismarkedwithaletter.Answerthequestionsbymarkingthecorrespondingletter. Isitcheapertobeawoman--oraman? A.Tocelebratethelaunchofgenderequalityinfinancialservices,Moneyexploredotherareasofspendingtofindoutifthere’sdiscrimination—andaftercrunchingthenumbersfoundthecostofbeingawomanis(mildlyunscientifically)6%morethanaman. Clothes B.Someretailerschargedifferentpricesfornearidenticalitems,dependingonwhetheryouareinthemen’sorthewomen’ssections.Youmightthinkthatmen’sclothesshouldcostmoreastheyarelikelytoinvolvemorematerial,andthisisthecaseatsomeshops-atUniqlo,forinstance，skinnyjeansare£5more,acashmeresweater£10more.However,otherretailerschargewomenmore:atNext,forexample,youwillpay£24fora“supersoftrobe”dressinggown,whileaman’sis£22.Women’sLevi’sjeansare£20morethanthe£70formen’s501s.Overall,wheretherewasadifference,ifyouboughtthesamenumberofidenticalgarments,youwouldpaymoreasaman.ThisseemstobeborneoutbytransactiondatafromBarclaycardwhichshowsthatamongstitscustomers,womenspendanaverageof£59atimeonclothes,whileformenitis£65. C.Butacrossthecourseofayear,womendohaveamuchbiggeroutlay(花费).ThelatestONS(OfficeforNationalStatistics)surveyonhouseholdspendingshowsthatin2011itwasanaverage£244ayearonmen’sclothes,againstanaverageof£458onwomen’sclothes.Women’sshoesaccountedfor£109ayear,whilemen’scost£68.Men’saccessoriescost£10ayear,whilewomen’s£21.Addthisallupandonaveragewomenarespending£588ayearontheirwardrobes,whilemenareshellingout(花大笔钱)£322. Single-sexspending D.TheONSalsohasdataforthecostofunderwear--anditmaynotbeasurprisethathouseholdspendingonwomen’sunderwearishigher,atanaverageof£57.20ayearversus£26formen.AtriptoMarks&Spencerestablishedthatmen’spantscostmorethanknickers,butwomenfaceadditionalcostsfortightsandbras.Asurveyearlierthisyearsuggestedtheaveragewomanhasninebrasinherunderweardrawer-evenifyougoforMarks&Spencer’sbasictwo-packofwhitebras,thatmeansanoutlayofalmost£70,andyouwillneedtoreplacethematsomepoint. E)Anotheritemwomenwillhavetobuypurelybecauseoftheirgenderissanitaryproducts.Theaveragewomanhasperiodsforatleast30yearsofherlifeandtheaveragecycleis28days,soshehas13ayear.Assumingherperiodlastsfivedaysandsheusesfoursanitarytowelsaday,that’s260ayear.Apacketof26AlwaysUltracosts£3.85inBoots,sothataddsupto£38.50ayear,oratleast£1155overalifetime.Fortampons(assuming20cost£1.99)theoutlayislikelytobearound£776over30years. F)Formanywomen,thecostofmake-upaddsaconsiderableamounteachmonth.TheONSsays£2.70aweek,or£140ayear,isspentoncosmetics.Menmightarguethattheyneedtobuyrazors(剃须刀),butsodomanywomen-andtheytendtocostmore.AtBoots,apackof10WilkinsonSwordrazorsaimedatthefemalemarketcost£4.39-£1.30morethanasimilarproductaimedatmen. Thecostofliving G)Thereareothercoststhataredictatedbynature.Women,forexample,areadvisedtohaveanaveragecalorieintakeof2000aday,whileamanneeds2500tomaintainhisweight,somenneed25%morecalorieseveryday.Thiswillnotnecessarilycost25%more-youcanbulkupamealbythrowinginmoreofthecheaperstaplessuchaspastaandriceetc.,butitwilladdtothecost.AsurveyofUSofficeworkersfoundthatmenwhoboughttakeawaysandwicheswerespendingalmostdoubleonluncheachweekthantheirfemalecounterparts. H)Womenarealsoadvisedtodrinkless-twotothreeunitsadayagainstthethreeorfourguidelineformen.Abottleofwineat13.5%alcoholcontains10.13units.Ifitcosts£4.99,assumingyouhavethemaximumeachday,asawomanyouwillspend£1.47andasaman£1.96.That’sabigassumption--manypeopledrinkless,somemore. I)Onebigthingtorememberisthatalthoughalcoholmaybeapreservative,womenarelikelytolivelonger,andwillthereforehavetomeettheirlivingcostsformoreyears.In2010theaveragelifeexpectancyatbirthwas82forwomenand78formen:thatmeansforkingoutforfood,heating,travel,entertainment,forfourextrayears.Thechangetoannuityratesbroughtinbythegenderdirectivemeansthatwomenwillgetthesameincomeasaman,regardlessofthefactthattheyareexpectedtolivelonger,buttheywillneedtofactortheseyearsofextraspendingintotheirothersavings. Haircuts J)Askmostmenhowmuchtheypayforahaircutandthey’llprobablysayaroundatennerattheirlocalbarber.Unlesstheyarefriendswithahairdresser,womenwillusuallyspendatleastdoublethat.Thiswillbeinpartbecausetheygotodifferentplacesfortheircuts,butevenifamanandawomanwalkedintothesamesalonthewomanwouldprobablyenduppayingmore. K)Manysalonshavestoppedpricingaccordingtosex,butsomequotedifferentcostsaccordingtothelengthofhair,whichmeanswomenarelikelytoendupspendingmore.InSupercuts,forexample,pricesareadvertisedasstartingfrom£13.95foracutand£16.95foracutandwash.Atmylocalsalonthehairdressersaidamanwouldpay£16.95or£18.95,whileacutandshampooofmyshoulder-lengthhairwouldcost£23.90. L)Bythispointyoumaywellbeshouting“Ineedtobuyrazorsfarmoreoftenthanmygirlfriend”or“Ihavetospendonmyhair,you’reabaldie(光头)”,andofcourseyourindividualcircumstanceswillaffectyourspendinghabitsandneeds-oryoumayhaveotherexamplesofinstanceswherepricingisdifferentforeachsex. 1.Intermsofasingledayoryear,menusuallyconsumemorealcoholthanwomen. 2.Morematerialusedmakesthemen’sclothesmoreexpensivethanwomen’satUniqlo. 3.People’sspendinghabitsandneedsaredifferentaccordingtotheirownsituations. 4.AccordingtotheONS,women’sspendingonunderwearismorethantwiceasmuchasthatofmen’s. 5.Razorsseemtobenecessaryforbothmenandwomen. 6.Thelongerlifeofwomenmeanstheirlifetimeexpensesmaygetbigger. 7.Onaverage,thatmenneedmorecaloriesthanwomenisthemaincauseofthedifferencebetweenmen’sandwomen’scostoffood. 8.Nomatterwhethermenandwomengotothesameordifferentplacesforhaircut,womenarelikelytospendmorethanmen. 9.Accordingtoasurveyonhouseholdspending,peoplespendmostonclothesratherthanshoesandaccessories 10.Insomesalons,thepriceofhaircutisnotsetbysexanymore,butsometimesbyhowlongthehairis.
Exercise28 Directions:Inthissection,youaregoingtoreadapassagewithtenstatementsattachedtoit.Eachstatementcontainsinformationgiveninoneoftheparagraphs.Identifytheparagraphfromwhichtheinformationisderived.Youmaychooseaparagraphmorethanonce.Eachparagraphismarkedwithaletter.Answerthequestionsbymarkingthecorrespondingletter. Isitcheapertobeawoman--oraman? A.Tocelebratethelaunchofgenderequalityinfinancialservices,Moneyexploredotherareasofspendingtofindoutifthere’sdiscrimination—andaftercrunchingthenumbersfoundthecostofbeingawomanis(mildlyunscientifically)6%morethanaman. Clothes B.Someretailerschargedifferentpricesfornearidenticalitems,dependingonwhetheryouareinthemen’sorthewomen’ssections.Youmightthinkthatmen’sclothesshouldcostmoreastheyarelikelytoinvolvemorematerial,andthisisthecaseatsomeshops-atUniqlo,forinstance，skinnyjeansare£5more,acashmeresweater£10more.However,otherretailerschargewomenmore:atNext,forexample,youwillpay£24fora“supersoftrobe”dressinggown,whileaman’sis£22.Women’sLevi’sjeansare£20morethanthe£70formen’s501s.Overall,wheretherewasadifference,ifyouboughtthesamenumberofidenticalgarments,youwouldpaymoreasaman.ThisseemstobeborneoutbytransactiondatafromBarclaycardwhichshowsthatamongstitscustomers,womenspendanaverageof£59atimeonclothes,whileformenitis£65. C.Butacrossthecourseofayear,womendohaveamuchbiggeroutlay(花费).ThelatestONS(OfficeforNationalStatistics)surveyonhouseholdspendingshowsthatin2011itwasanaverage£244ayearonmen’sclothes,againstanaverageof£458onwomen’sclothes.Women’sshoesaccountedfor£109ayear,whilemen’scost£68.Men’saccessoriescost£10ayear,whilewomen’s£21.Addthisallupandonaveragewomenarespending£588ayearontheirwardrobes,whilemenareshellingout(花大笔钱)£322. Single-sexspending D.TheONSalsohasdataforthecostofunderwear--anditmaynotbeasurprisethathouseholdspendingonwomen’sunderwearishigher,atanaverageof£57.20ayearversus£26formen.AtriptoMarks&Spencerestablishedthatmen’spantscostmorethanknickers,butwomenfaceadditionalcostsfortightsandbras.Asurveyearlierthisyearsuggestedtheaveragewomanhasninebrasinherunderweardrawer-evenifyougoforMarks&Spencer’sbasictwo-packofwhitebras,thatmeansanoutlayofalmost£70,andyouwillneedtoreplacethematsomepoint. E)Anotheritemwomenwillhavetobuypurelybecauseoftheirgenderissanitaryproducts.Theaveragewomanhasperiodsforatleast30yearsofherlifeandtheaveragecycleis28days,soshehas13ayear.Assumingherperiodlastsfivedaysandsheusesfoursanitarytowelsaday,that’s260ayear.Apacketof26AlwaysUltracosts£3.85inBoots,sothataddsupto£38.50ayear,oratleast£1155overalifetime.Fortampons(assuming20cost£1.99)theoutlayislikelytobearound£776over30years. F)Formanywomen,thecostofmake-upaddsaconsiderableamounteachmonth.TheONSsays£2.70aweek,or£140ayear,isspentoncosmetics.Menmightarguethattheyneedtobuyrazors(剃须刀),butsodomanywomen-andtheytendtocostmore.AtBoots,apackof10WilkinsonSwordrazorsaimedatthefemalemarketcost£4.39-£1.30morethanasimilarproductaimedatmen. Thecostofliving G)Thereareothercoststhataredictatedbynature.Women,forexample,areadvisedtohaveanaveragecalorieintakeof2000aday,whileamanneeds2500tomaintainhisweight,somenneed25%morecalorieseveryday.Thiswillnotnecessarilycost25%more-youcanbulkupamealbythrowinginmoreofthecheaperstaplessuchaspastaandriceetc.,butitwilladdtothecost.AsurveyofUSofficeworkersfoundthatmenwhoboughttakeawaysandwicheswerespendingalmostdoubleonluncheachweekthantheirfemalecounterparts. H)Womenarealsoadvisedtodrinkless-twotothreeunitsadayagainstthethreeorfourguidelineformen.Abottleofwineat13.5%alcoholcontains10.13units.Ifitcosts£4.99,assumingyouhavethemaximumeachday,asawomanyouwillspend£1.47andasaman£1.96.That’sabigassumption--manypeopledrinkless,somemore. I)Onebigthingtorememberisthatalthoughalcoholmaybeapreservative,womenarelikelytolivelonger,andwillthereforehavetomeettheirlivingcostsformoreyears.In2010theaveragelifeexpectancyatbirthwas82forwomenand78formen:thatmeansforkingoutforfood,heating,travel,entertainment,forfourextrayears.Thechangetoannuityratesbroughtinbythegenderdirectivemeansthatwomenwillgetthesameincomeasaman,regardlessofthefactthattheyareexpectedtolivelonger,buttheywillneedtofactortheseyearsofextraspendingintotheirothersavings. Haircuts J)Askmostmenhowmuchtheypayforahaircutandthey’llprobablysayaroundatennerattheirlocalbarber.Unlesstheyarefriendswithahairdresser,womenwillusuallyspendatleastdoublethat.Thiswillbeinpartbecausetheygotodifferentplacesfortheircuts,butevenifamanandawomanwalkedintothesamesalonthewomanwouldprobablyenduppayingmore. K)Manysalonshavestoppedpricingaccordingtosex,butsomequotedifferentcostsaccordingtothelengthofhair,whichmeanswomenarelikelytoendupspendingmore.InSupercuts,forexample,pricesareadvertisedasstartingfrom£13.95foracutand£16.95foracutandwash.Atmylocalsalonthehairdressersaidamanwouldpay£16.95or£18.95,whileacutandshampooofmyshoulder-lengthhairwouldcost£23.90. L)Bythispointyoumaywellbeshouting“Ineedtobuyrazorsfarmoreoftenthanmygirlfriend”or“Ihavetospendonmyhair,you’reabaldie(光头)”,andofcourseyourindividualcircumstanceswillaffectyourspendinghabitsandneeds-oryoumayhaveotherexamplesofinstanceswherepricingisdifferentforeachsex. 1.Intermsofasingledayoryear,menusuallyconsumemorealcoholthanwomen. 2.Morematerialusedmakesthemen’sclothesmoreexpensivethanwomen’satUniqlo. 3.People’sspendinghabitsandneedsaredifferentaccordingtotheirownsituations. 4.AccordingtotheONS,women’sspendingonunderwearismorethantwiceasmuchasthatofmen’s. 5.Razorsseemtobenecessaryforbothmenandwomen. 6.Thelongerlifeofwomenmeanstheirlifetimeexpensesmaygetbigger. 7.Onaverage,thatmenneedmorecaloriesthanwomenisthemaincauseofthedifferencebetweenmen’sandwomen’scostoffood. 8.Nomatterwhethermenandwomengotothesameordifferentplacesforhaircut,womenarelikelytospendmorethanmen. 9.Accordingtoasurveyonhouseholdspending,peoplespendmostonclothesratherthanshoesandaccessories 10.Insomesalons,thepriceofhaircutisnotsetbysexanymore,butsometimesbyhowlongthehairis.
比较C≡C, C=C, C─C, C=C─C=C的键长次序为: C=C─C=C>C─C> C≡C >C=C|C=C─C=C>C─C>C=C>C≡C|C≡C>C=C>C─C>C=C─C=C|C─C>C=C>C=C─C=C>C≡C|C─C>C=C─C=C>C=C>C≡C
比较C≡C, C=C, C─C, C=C─C=C的键长次序为: C=C─C=C>C─C> C≡C >C=C|C=C─C=C>C─C>C=C>C≡C|C≡C>C=C>C─C>C=C─C=C|C─C>C=C>C=C─C=C>C≡C|C─C>C=C─C=C>C=C>C≡C
下列哪种主链骨架原子排列最能代表两个肽键?() A: Cα—N—Cα—C—Cα—N—Cα—C B: Cα—N—C—C—N—Cα C: C—N—Cα—Cα—C—N D: Cα—C—N—Cα—C—N E: Cα—Cα—C—N—Cα—Cα—C
下列哪种主链骨架原子排列最能代表两个肽键?() A: Cα—N—Cα—C—Cα—N—Cα—C B: Cα—N—C—C—N—Cα C: C—N—Cα—Cα—C—N D: Cα—C—N—Cα—C—N E: Cα—Cα—C—N—Cα—Cα—C
比较C≡C(Ⅰ),C=C(Ⅱ),C─C(Ⅲ),C=C─C=C(Ⅳ)的键长次序为( )。 A: Ⅰ＞Ⅱ＞Ⅲ＞Ⅳ B: Ⅲ＞Ⅱ＞Ⅳ＞Ⅰ C: Ⅲ＞Ⅳ＞Ⅱ＞Ⅰ D: Ⅳ＞Ⅲ＞Ⅱ＞Ⅰ
比较C≡C(Ⅰ),C=C(Ⅱ),C─C(Ⅲ),C=C─C=C(Ⅳ)的键长次序为( )。 A: Ⅰ＞Ⅱ＞Ⅲ＞Ⅳ B: Ⅲ＞Ⅱ＞Ⅳ＞Ⅰ C: Ⅲ＞Ⅳ＞Ⅱ＞Ⅰ D: Ⅳ＞Ⅲ＞Ⅱ＞Ⅰ
不稳定的一类化合物是: C≡C|C－C|C＝C|C＝C－C＝C|C＝C＝C
不稳定的一类化合物是: C≡C|C－C|C＝C|C＝C－C＝C|C＝C＝C
NaNH4HPO4水溶液的质子条件式为 A: c(H+)+c(H2PO4-)+2 c(H3PO4)=c(OH-)+c(NH3) +c(PO43-) B: c(H+)+c(H2PO4-)+ c(H3PO4)=c(OH-)+c(NH3) +c(PO43-) C: c(H+)+c(NH3)+ c(H3PO4)=c(OH-)+c(PO43-) +c(H2PO4-) D: c(H+)+c(NH3)+ 2c(H3PO4)=c(OH-)+c(PO43-) +c(H2PO4-)
NaNH4HPO4水溶液的质子条件式为 A: c(H+)+c(H2PO4-)+2 c(H3PO4)=c(OH-)+c(NH3) +c(PO43-) B: c(H+)+c(H2PO4-)+ c(H3PO4)=c(OH-)+c(NH3) +c(PO43-) C: c(H+)+c(NH3)+ c(H3PO4)=c(OH-)+c(PO43-) +c(H2PO4-) D: c(H+)+c(NH3)+ 2c(H3PO4)=c(OH-)+c(PO43-) +c(H2PO4-)
比较C≡C(I)，C=C(II)，C─C(III)，C=C─C=C(IV)的键长次序为：
比较C≡C(I)，C=C(II)，C─C(III)，C=C─C=C(IV)的键长次序为：
在同一种固体介质中，纵波、横波、表面波三者之间的声速关系为（） A: C﹤C﹤C B: C﹤C﹤C C: C﹤C﹤C D: C﹤C﹤C
在同一种固体介质中，纵波、横波、表面波三者之间的声速关系为（） A: C﹤C﹤C B: C﹤C﹤C C: C﹤C﹤C D: C﹤C﹤C
scanf(“%c%c%c“, &a,&b,&c)与scanf(“%c %c %c“ ,&a,&b,&c)的输入（ ）。
scanf(“%c%c%c“, &a,&b,&c)与scanf(“%c %c %c“ ,&a,&b,&c)的输入（ ）。
能产生共轭效应的是 A: C=C=C B: C=C C: C≡C D: C=C-C=C E: C-C
能产生共轭效应的是 A: C=C=C B: C=C C: C≡C D: C=C-C=C E: C-C