Situation1:John istalkingaboutthebusinesstriparrangement with hissecretary Linda.(A: John Smith B:Linda)A: I'mplanningabusinesstriptoSydney.I'dlike you tomakethenecessary ___1____forme.B: Certainly,sir.I'll getintouchwiththeticket _____2_____ immediately.Whendoyou planto leave?A：IexpecttodepartforSydneyonanearly morning flightonMonday,May6th. And Iwanttostaytherefor threeorfourdays. Please bookanopen ___3_____flight from ShanghaitoSydney.B:Willyouflyfirstclassasusual,sir?And where shallImakethehotel _____4_______?A:Yes,firstclass.I'vebeenquitesatisfiedwith the hotelsI'veusedfor _____5_____ before inSydney. Pleasemakethesamereservationformeat thoseplaces.Gatherallthe informationtogether, andpleasereport backtomeassoonaspossible.B:OK.Situation2:LindaisbookinganairplaneticketforherbossMrSmith.(C:aclerkinaticket agency)C:Flightreservations.HowmayIhelpyou?B:I’dliketomakeareservationforanopen return tickettoSydneyonMay6th morning. Doyouhaveanyfights _____6______?C: Letmesee.Yes,wehaveseatsavailableonFlight 789leavingShanghaiat9 o'clock.Is thatallright?B: Soundsgreat.C:Wouldyoupreferfirstclass,businessor _____7______?B: Firstclass,please.C:Whatisthename,please?B: John Smith.C:HasMrSmithgotanumberwherewecan ______8_____him,ifnecessary?B:Yes.Hisofficenumberis4329988.C:OK.Thetickethasbeenbookedforyou.B:Thankyou.C:Youarewelcome.Situation3:Lindaismaking reservation of a hotel for her boss Mr Smith. (D: a receptionistofHilton Hotel)D:HiltonHotel.MayIhelpyou?B: Yes.I’dliketobookasingleroomforthree nights.D:Whenfor,madam?B: FromMay6thtoMay8th.D:Just amoment,madam.Yes,wehavea _____9_____ forthatperiod.B: What'sthecurrentdaily ____10______?D:It's ＄90pernight.B:All right.Aremealsincludedinit?D:Yes,theyareincluded.B:Thatsoundsgood.D: Ok,thenwhat'syourname,please?B:Please book theroominthenameof JohnSmith.J-O-H-NS-M-I-T-H.D:Andthecontactnumber,please.B:It's4329988.D: Allright.Theroomhasbeenbooked.B:Thankyouverymuch.D:You'rewelcome.Goodbye.B: Bye.

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