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_________ I am! I've forgotten to post your letter.
A. What forgetful a creature
B. How forgetful a creature
C. What a forgetful creature
D. How a forgetful creature
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更多 “ _________ I am! I've forgotten to post your letter.A. What forgetful a creatureB. How forgetful a creatureC. What a forgetful creatureD. How a forgetful creature ” 相关考题
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Martin: Can you cover for me on Sunday? I'm supposed to teach the high school class. Lisa: Sure. ______ ? Martin: We're going to the beach for the weekend. Lisa: Well, don't worry. I'll take good care of Sunday school.A．What's inB．What's the thingC．What's upD．What's down
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--- ___________?--- I’m a journalist.A. What’s your nameB. What’s your jobC. Where are you from
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－ What’s the purpose of your visit today －()
A、Uh, I’m not sure.B、I’m intending to ask for your advice on brand design.C、Yes, I’d like to talk with you.
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Why do you look unhappy. What's the matter?()A. I'm satisfied with the good performance of the radio I've just bought.B. I'm glad to have bought this radio at such a price.C. I'm rather disappointed with the poor quality of the radio I've just bought.
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– What’s your plan for summer holiday? -- _____________.A、No plan.B、I like traveling.C、I’m going to travel around China.D、I’d like to travel.
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哪些句子回答How’s it going? ／What’s up?／What’s happening? ()
A、I'm fine, thank you.B、Nothing much.C、I've been fine, thank you.D、Same as usual.
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B 宽度优先（种子染色法）5．关键路径几个定义： 顶点1为源点，n为汇点。a. 顶点事件最早发生时间Ve[j], Ve [j] = max{ Ve [j] + w[I,j] },其中Ve (1) = 0;b. 顶点事件最晚发生时间 Vl[j], Vl [j] = min{ Vl[j] – w[I,j] },其中 Vl(n) = Ve(n);c. 边活动最早开始时间 Ee[I], 若边I由j,k表示，则Ee[I] = Ve[j];d. 边活动最晚开始时间 El[I], 若边I由j,k表示，则El[I] = Vl[k] – w[j,k];若 Ee[j] = El[j] ，则活动j为关键活动，由关键活动组成的路径为关键路径。求解方法：a. 从源点起topsort,判断是否有回路并计算Ve;
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