1、Located_______theBeltmeetstheRoad,JiangsuwillcontributemoretotheBeltandRoadconstruction. A.whyB.whenC.whichD.where 2、Whenyouhavefinishedthebook,besuretoplaceit　　　　itusedtobe. A.whichB.whereC.thatD.how 3、—Hey!Youlookcoolinyournewhairstyle. —Thanks.Ifyoulike,youcantrythebarber’s_____Ihavemyhaircut. A.whereB.whoC.whichD.when 4、Smileandkeepinagoodmood_____happensand_____muchtroubleyoumeetwith. A.whatever,howeverB.what,nomatterhow C.what,howD.whatever,how 5、Mygrandfatherstillplaystennisnowandthen,________he’sinhisnineties. A.aslongasB.asifC.eventhoughD.incase 6、_______,herhandsshookconstantlyandviolently. A.Knowinghersonkilledintheaccident B.Whensheknewhersonwaskilledintheaccident C.Knownhersonkilledintheaccident D.Sheknewhersonkilledintheaccident 7、,Ihavetoputitawayandfocusmyattentiononstudythisweek. A.HoweverthestoryisamusingB.Nomatteramusingthestoryis C.HoweveramusingthestoryisD.Nomatterhowthestoryisamusing 8、_______thattheyhadlostthegame,tearsrandownKate’sface. A.OnhearingthenewsB.Whenheardthenews C.ThemomentsheheardthenewsD.Whilehearingthenews 9、______youmayhave，youshouldgatheryourcouragetofacethechallenge. A.HoweveraseriousproblemB.Whataseriousproblem C.HoweverseriousaproblemD.Whatseriousaproblem 10、youmustremaincalm. A.WhateveryoumaybefrightenedB.Howeverfrightenedyoumaybe C.WhateverfrightenedyoumaybeD.Howeveryoumaybefrightened 11、youmustremaincalm. A.WhateveryoumaybefrightenedB.Howeverfrightenedyoumaybe C.WhateverfrightenedyoumaybeD.Howeveryoumaybefrightened 12、_______,Motherwillwaitforhimtohavedinnertogether. A.NomatterhowlateisheB.Nomatterhowheislate C.NomatterhowishelateD.Nomatterhowlateheis 13、_______tomorrow,ourcarwillsetoutforthedistantvillage. A.HowevertheweatherislikeB.Howeveristheweatherlike C.WhateveristheweatherlikeD.Whatevertheweatherislike 14、_______,you’llneverbeabletopersuadehim. A.Nomatterhowgoodadviceyougive B.Howevergoodadvicedoyougive C.Nomatterwhatgoodyougiveadvice D.Whatevergoodadviceyougive 15、______heoncefeltlikegivingup,henowhasthedeterminationtopushfurtherandkeepongoing. A.WhereB.AsC.IncaseD.Nowthat 16、________itis，theboyneverseemstobeabletofinishitoff. A.Howeverinterestingabook B.Whateverinterestingabook C.Howinterestingabook D.Whataninterestingbook 17、—Whendidyougethomelastnight? —Itwasalmostmidnight________wearrivedhome. A.thatB.beforeC.since　D.when 18、　　　,theideaofhavingtoworkunderawomandefeatedhim. A.Wantingthejobverymuch B.Althoughwantingthejobbadly C.Thoughhewantedthejobverymuch D.Hewantedthejobbadly 19、Much　　　　hestateshehasagoodtasteofhisown,hecan’tavoidbeinginfluencedbyadvertisement. A.whileB.althoughC.asD.when 20、If______somethingyoudon’twanttoeat,justrefusepolitely. A.yougiveB.beinggivenC.givenD.aregiven 21、___________________,theexperimentwillbesuccessful. A.IfcarefullydoingB.Ifitwasdonecarefully C.IfcarefullydoneD.Ifdoingcarefully 22、,wewellnotloseheartbecauseweknowwearesupportedbyyouall. A.Nomatterthedifficultymaybe B.Howeverthedifficultymaybe C.Howevergreatthedifficultymaybe D.Howevermaybethedifficulty 23、Don’tsendtextmessagewhile_____. A.youcrossedtheroadB.crossingtheroad C.crosstheroadD.youcrossingtheroad 24、Althoughheisconsideredagreatwriter,_____. A.hisworksisnotwidelyread B.buthisworksarenotwidelyread C.howeverhisworksarenotwidelyread D.yethisworksarenotwidelyread 25、___________,motherwillwaitforhimtohavedinnertogether. A.HoweverishelateB.Howeverheislate C.HoweverlateisheD.Howeverlateheis 26、Heisoneofmypreviousstudentsandalwayscomestoseemewhenever________. A.heisconvenientB.hewillbeconvenient C.itisconvenienttohimD.itwillbeconvenienttohim 27、Duringthereconstructionofthecity,manymoderntallbuildingswentup______oldshabbyhousesweretorndown. A.which　B.inwhatC.inwhich　D.where 28、difficultywemeetwith,wemustfinishitontime,becausetheopportunityisvaluable. A.Whatever,thatB.However,such C.However,soD.Whatever,such 29、Only______ahumanbeing. A.whenisithungryalionwillattack B.whenitishungryalionwillattack C.whenitishungrywillalionattack D.whenisithungrywillalionattack 30、IwassurfingtheInternet______thattheChineseweightlifterLiPingbroketheworldrecord. A.whensuddenlycamethegoodnews B.whilethegoodnewscamesuddenly C.whensuddenlydidthegoodnewscame D.whilesuddenlycamethegoodnews 31、Thisisaveryinterestingbook.I’llbuyit,_____. A.howmuchmayitcostB.nomatterhowitmaycost C.howevermuchitmaycostD.whatevermayitcost 32、Thisisaveryinterestingbook.I’llbuyit,_____. A.howmuchmayitcostB.nomatterhowitmaycost C.howevermuchitmaycostD.whatevermayitcost 33、ThisnewEnglishEnglishdictionaryisusefulforme.________，I'llbuyit. A.HowmuchmayitcostB.Nomatterhowitmaycost C.HowevermuchitmaycostD.Howmayitcost 34、________thepoemasecondtime，themeaningwillbecomeclearertoyou. A.YourreadingB.Whilereading C.IfreadingD.Whenyouread 35、—Wasit11o'clock________yourfathercamebacklastnight? —Yes，heisalwayscomingbacksolate. A.thatB.whileC.whenD.until 36、________itis，theboyneverseemstobeabletofinishitoff. A.HoweverinterestingabookB.Whateverinterestingabook C.HowinterestingabookD.Whataninterestingbook 37、_______youmayhave,youshouldgatheryourcouragetofacethechallenge. A.HoweveraseriousproblemB.Whataseriousproblem C.HoweverseriousaproblemD.Whatseriousaproblem 38、Bythetimethetraffic______,wewillhaverunoutofgas. A.clearsB.clearedC.willclearD.hasbeenclearing 39、______,Iwillstandbyhersideandfaceuptoittogether. A.Howeveraseriousmistakeshemaymake B.Howevershemaymakeamistake C.Whateveraseriousmistakeshemaymake D.Whateverseriousamistakeshemaymake 40、　　　　,aslongasI’mwithnature,Idon’tcare. A.Howevertoughthejourneyis B.Whatevertoughthejourneyis C.Howeverthejourneyistough D.Whateverthejourneyistough/js/editor20150812/themes/default/images/spacer.gif

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

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

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：

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（ ）。

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