• 2022-05-28 问题

    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.

    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.

  • 2022-05-28 问题

    Whichtwowordsareclosestinmeaning?<br/><b>cycle</b><b>,</b><b>hawk</b><b>,</b><b>convey</b><b>,</b><b>extort</b><b>,</b><b>peddle</b><b>,</b><b>summon</b>

    Whichtwowordsareclosestinmeaning?<br/><b>cycle</b><b>,</b><b>hawk</b><b>,</b><b>convey</b><b>,</b><b>extort</b><b>,</b><b>peddle</b><b>,</b><b>summon</b>

  • 2022-06-14 问题

    设A{a,b},则P(A)×A = (   )。 A: A B: P(A) C: {<Φ,a>,<Φ,b>,<{a},a>,<{a},b>,<{b},a>,<{b},b>,<A,a>,<A,b>} D: {<a,,Φ,>,<b,,Φ,>,<a,{a}>,<b,{a}>,<a,{b}>,<b,{b}>,<a,A>,<b,A>}

    设A{a,b},则P(A)×A = (   )。 A: A B: P(A) C: {<Φ,a>,<Φ,b>,<{a},a>,<{a},b>,<{b},a>,<{b},b>,<A,a>,<A,b>} D: {<a,,Φ,>,<b,,Φ,>,<a,{a}>,<b,{a}>,<a,{b}>,<b,{b}>,<a,A>,<b,A>}

  • 2022-07-01 问题

    以下哪段代码可以将A,B的值互换() A: A=A^B; B=A^B;A=A^B B: A= A^B;A=A^B;B=A^B C: B= A^B; B=A^B; A=A^B D: B=A^B; A= A^B; A= A^B

    以下哪段代码可以将A,B的值互换() A: A=A^B; B=A^B;A=A^B B: A= A^B;A=A^B;B=A^B C: B= A^B; B=A^B; A=A^B D: B=A^B; A= A^B; A= A^B

  • 2022-07-01 问题

    若集合A={a,b},B={ a,b,{ a,b }},则()。 A: A⊆B,且A∈B B: A∈B,且B⊆A C: A⊈B,且A∉B D: A∉B,且A⊈B

    若集合A={a,b},B={ a,b,{ a,b }},则()。 A: A⊆B,且A∈B B: A∈B,且B⊆A C: A⊈B,且A∉B D: A∉B,且A⊈B

  • 2022-06-08 问题

    设论域D={a,b},与公式[img=504x85]17d6234b6469e12.png[/img]等价的命题公式是( ) A: (A(a)∧A(b)) → (B(a)∧B(b)) B: (A(a)→B(a))∨(A(b)→B(b)) C: (A(a)∨A(b)) → (B(a)∨B(b)) D: (A(a)→B(a))∧(A(b)→B(b))

    设论域D={a,b},与公式[img=504x85]17d6234b6469e12.png[/img]等价的命题公式是( ) A: (A(a)∧A(b)) → (B(a)∧B(b)) B: (A(a)→B(a))∨(A(b)→B(b)) C: (A(a)∨A(b)) → (B(a)∨B(b)) D: (A(a)→B(a))∧(A(b)→B(b))

  • 2022-06-14 问题

    设论域D={a,b},与公式[img=126x21]17da63121bb0ede.png[/img]等价的命题公式是( ) A: (A(a)∧A(b)) → (B(a)∧B(b)) B: (A(a)→B(a))∨(A(b)→B(b)) C: (A(a)∨A(b)) → (B(a)∨B(b)) D: (A(a)→B(a))∧(A(b)→B(b))

    设论域D={a,b},与公式[img=126x21]17da63121bb0ede.png[/img]等价的命题公式是( ) A: (A(a)∧A(b)) → (B(a)∧B(b)) B: (A(a)→B(a))∨(A(b)→B(b)) C: (A(a)∨A(b)) → (B(a)∨B(b)) D: (A(a)→B(a))∧(A(b)→B(b))

  • 2021-04-14 问题

    优学院: <p class="MsoNormal"> <b>一人造地球卫星到地球中心</b><b>O</b><b>的最大距离和最小距离分别是</b><b>R</b><b><sub>A</sub></b><b>和</b><b>R</b><b><sub>B</sub></b><b>.设卫星对应的角动量分别是</b><b>L</b><b><sub>A</sub></b><b>、</b><b>L</b><b><sub>B</sub></b><b>,动能分别是</b><b>E</b><b><sub>KA</sub></b><b>、</b><b>E</b><b><sub>KB</sub></b><b>,则应有</b><b>&nbsp;</b><b>&nbsp;&nbsp;&nbsp;</b><b>&nbsp;[ &nbsp;</b><b>&nbsp;&nbsp;</b><b>&nbsp;]</b><b><o:p></o:p></b> </p> <p class="MsoNormal"> <b><br> </b> </p>

    优学院: <p class="MsoNormal"> <b>一人造地球卫星到地球中心</b><b>O</b><b>的最大距离和最小距离分别是</b><b>R</b><b><sub>A</sub></b><b>和</b><b>R</b><b><sub>B</sub></b><b>.设卫星对应的角动量分别是</b><b>L</b><b><sub>A</sub></b><b>、</b><b>L</b><b><sub>B</sub></b><b>,动能分别是</b><b>E</b><b><sub>KA</sub></b><b>、</b><b>E</b><b><sub>KB</sub></b><b>,则应有</b><b>&nbsp;</b><b>&nbsp;&nbsp;&nbsp;</b><b>&nbsp;[ &nbsp;</b><b>&nbsp;&nbsp;</b><b>&nbsp;]</b><b><o:p></o:p></b> </p> <p class="MsoNormal"> <b><br> </b> </p>

  • 2022-06-05 问题

    设个体域D={a,b}与公式∀x A(x)∧∀xB(x) 等价的命题公式是( ) A: (A(a)∧A(b)) ∧(B(a) ∧B(b)) B: (A(a)∨A(b)) ∧(B(a) ∨B(b)) C: (A(a)∧A(b))∨(B(a)∧B(b)) D: (A(a)∨B(a)) ∧(A(b) ∨B(b))

    设个体域D={a,b}与公式∀x A(x)∧∀xB(x) 等价的命题公式是( ) A: (A(a)∧A(b)) ∧(B(a) ∧B(b)) B: (A(a)∨A(b)) ∧(B(a) ∨B(b)) C: (A(a)∧A(b))∨(B(a)∧B(b)) D: (A(a)∨B(a)) ∧(A(b) ∨B(b))

  • 2022-06-30 问题

    设A=ía,bý,B=í1,2,3ý,求:A×B,B×A,A×A,B×B和(A×B)∩( B×A)。

    设A=ía,bý,B=í1,2,3ý,求:A×B,B×A,A×A,B×B和(A×B)∩( B×A)。

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