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【简答题】
已知A、B、C、D、E、F都是周期表中前四周期的元素，它们的核电荷数A＜B＜C＜D＜E＜F。其中A、B、C是同一周期的非金属元素。化合物DC的晶体为离子晶体，D的二价阳离子与C的阴离子具有相同的电子层结构。AC 2 为非极性分子。B、C的氢化物的沸点比它们同族相邻周期元素氢化物的沸点高。E元素是第四周期元素中未电子数最多的元素，ECl 3 能与B、C的氢化物形成六配位的配合物，且两种配体的物质的量之比为2∶1，1mol配合物与足量的AgNO 3 溶液反应能立即生成3molAgCl。F原子的一种核素的质量数为65，中子数为 36。请根据以上情况，回答下列问题：（答题时要用元素符号表示） （1）B氢化物与HCl反应生成的含有B元素粒子的空间构型是 .F元素原子的最外层电子数为 个。 （2）B 3 - 离子分别与AC 2 、由B、C组成的气态化合物互为等电子体，则B、C组成的化合物化学式为 ；B 3 - 离子还可以和一价阴离子互为等电子体，这阴离子电子式为 ，这种阴离子常用于检验日常生活中的一种金属阳离子，这金属阳离子符号为 （3）A、B、C的第一电离能由小到大的顺序为 （4）E 3+ 的核外电子排布式是 ，ECl 3 形成的六配位的配合物化学式为 。 （5）B的最高价氧化物对应的水化物的稀溶液与D的单质反应时，B被还原到最低价，该反应的化学方程式是 （6）在F的+1价氧化物的晶胞结构如图，F为____球（“黑”“白”）
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【简答题】某生物有四对同源染色体,在减数分裂中能形成( )个二价体和( )条染色体。
【单选题】【D3】 LIZ: GEEZ! YOUR ROOM IS LIKE AN ICE-BOX! TERRI:【D1】______IT' S JUST COMFORTABL E. LIZ: YEAH, IF YOU' RE A PENGUI N. JUST LOOK AT ME! 【D2】______ TERRI: BUT YOU DON' T HAVE TO STAY HER E. I THINK Y...
B.
BY THE DOOR, ON THE WALL.
C.
I'M SHAKING ALL OVER.
D.
NO, IT'S NOT!
【简答题】Could you do me a f__________? 请问能帮我个忙吗?
【简答题】某生物有四对同源染色体,在减数分裂中能形成 个二价体和 条染色单体。
【单选题】听力原文：M: Susan, could you do me a favor? W: What is it, John? You will ask for a leave from Professor Li's class again? M: No, no. This is easy compared to that. My cousin is coming on Thursday. She ha...
A.
He will meet her cousin sister at the station.
B.
He will ask for a leave from the class.
C.
He will have an interview.
D.
He will be on duty at the library.
【简答题】A. Oh, yes. How do you do, Mr. Smith? My name is LiYing B. Excuse me C. you are the general manager D. Welcome to our company E. I’ll be glad to see you again. F. Here is my card. G. That’s all right ...
【简答题】根据课文内容， 完成下列句子，每空词数不限。 Liz Smith Liz Smith faces many challenges in her daily life because she is a (1) _________ person. Liz Smith can't use her (2) _________ well, so normal things have always been...
【简答题】work in pairs and role-play the dialogue below. A: Can you do me a favor? B: What can I do for you? A : I’m very busy recently and can’t finish my homework. There’s too much of it. B: What do you mean...
【单选题】Student A: By the way, would you please do me a favor by passing the book over? Student B: ______, here you are.
A.
I think so.
B.
With pleasure.
C.
Please take it easy.
D.
Yes, but why?
E.
Sure you can.
F.
It's very kind of you!
G.
Never mind.
H.
Not too bad.
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