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问题 填空题

A、B、C、D、E五种元素均为短周期元素，原子序数逐渐增大。A形成的单质密度最小(相同条件下)。B可形成多种同素异形体，其中一种的硬度自然界中最大。D元素原子的最外层电子数是次外层电子数的3倍。E元素的最高价氧化物的水化物的酸性强于硫酸。

（1）元素C位于元素周期表的  周期   族，原子结构示意图为           。

（2）B、C、D三种元素的最简单氢化物的稳定性从大到小的顺序是            (填化学式)，BE4分子的空间构型是             。

（3）元素A与B形成原子个数比为1：1的相对分子质量最小的化合物的结构式为                 。

（4）A、B、C、D几种元素之间可以形成多种10电子微粒，写出上述10电子微粒之间反应的其中一个化学方程式或离子方程式：                                         

（5）写出E的单质制取漂白粉反应的化学方程式并标出电子转移的方向和数目：                         

答案

(共16分)

（1）二  VA  （2分）（2分），

（2）H2O>NH3>CH4(2分)   正四面体(2分)

(3)  (2分)

（4）NH3+H2O=NH3·H2O或OH-十NH4+=NH3·H2O(2分)

（5） (化学方程式2分，电子转移2分，共4分)

题目分析：根据题意可以推断A、B、C、D、E分别为H、C、N、O、Cl。10个电子的离子可以以氖为中心，氖前面的阴离子和氖后面的阳离子以及阴离子对应的氢化物、氢化物的阴阳离子等。H、C、N、O想到CH4、NH3（NH2-、NH4+）、H2O（H3O+、OH-）、HF等。Cl2与漂白粉的反应为歧化反应，在表电子转移是最好使用单线桥法（参考答案以及2012安徽高考卷均使用双线桥法，不知何意）

完形填空

根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。（注意：涂在答题卡上，E涂 AB  F 涂 AC   G涂 AD）

    _____小题1:_________． Since that time, we've provided people like you --- teachers, doctors, salespeople, full-time parents --- with a way of having a great time, challenging themselves and reconnecting with family and friends．

The non-stop routine of everyday life – answering e-mails, sitting in staff meetings ---- can have a dulling effect on people's senses． ____小题2:___． Otherworld provides just such an opportunity． It is an experience participants cherish and remember for years afterwards．

Coming to Otherworld is like stepping into the pages of an adventure novel． You'll meet a host of characters, portrayed by our staff, who'll start bringing the world to life． Mysteries will begin to unfold around you．   小题3:___． You' ll see amazing sights and do things you never dreamed possible．

Suppose you were traveling to a foreign country． When you arrived, you might read a guidebook or visit a tourist booth to familiarize yourself with the laws and customs of the place you were visiting．      _____小题4:_____． Before the weekend, you'll receive a handbook, explaining Otherworld's customs and conventions． When you arrive at the weekend itself, there'll be a short briefing to review the handbook's contents．

Then you and your group are taken to the front door of the Inn at World's Edge． You'll see candles on each of the tables． A fire will burn in the fireplace． At many of the tables, people will sit talking, arguing, and laughing． These people are our staff volunteers． ___小题5:____．But now they are all costumed and playing roles as citizens of the village of World's Edge．

A．And at that moment, the adventure begins．

B．Otherworld Adventure Weekend starts in much the same way．

C．They are the same people who welcomed you and helped you unload bags．

D．Maybe some of the local people would talk to you, telling you about nearby attractions． ． E． Otherworld was founded in 1992 with an idea: to give people an extraordinary adventure．

F． Therefore, everybody needs a relaxing weekend - a good adventure to refresh themselves．

G． As you and your friends work together to solve them, you'll find yourselves F.challenged in ways that are exciting, unexpected and fun．
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单项选择题

附加的工人效应体现了()特点。

A.劳动力供给的经济周期

B.劳动力供给的生命周期

C.劳动力需求的经济周期

D.劳动力需求的生命周期
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