（14分）W、X、Y、Z四种短周期元素在元素周期表中的位置如图所示，其中Z位于ⅦA族。请回答下列问题。

（1）W的原子结构示意图为               。能说明Z的非金属性比X的金属性强的事实是            （举一例）。

（2）W、Y和氢可形成原子个数比为1:1:4的化合物，工业酒精中含有此物质。该化合物的一个重要作用是用作燃料电池，如图是2004年批量生产的以该物质为燃料的燃料电池结构示意图。则a通入的物质为   ，B电极反应式为              。

（3）电解NaZ水溶液时，阴极的电极反应式为                     。工业上，用上述反应的阳极产物和Ca(OH)₂为原料，制备漂白粉反应的化学方程式为              。

（4）已知：298K时，金属钠与Y₂气体反应，生成1 mol Na₂Y固体时，放出热量414 kJ；生成1 mol Na₂Y₂固体时，放出热量511 kJ。由Na₂Y固体与Y₂气体反应生成Na₂Y₂固体的热化学方程式为                        。

第二节：完形填空（．共20小题每小题1分，满分20分）   

阅读下下面短文，从后各题所给的，四个选项（A、B、C、D）中，选出最隹选项。

I was walking downa．darkly lit street late one,evening when I heard ambiguous screams coming from behind bushes．Alarmed,I  36  to listen, and panicked  37  I realized that what l WaS hearing were the,definite sounds．of  a  38  ：heavy noise, and tearing of cloth．

A woman was beingattacked． Should I get  39   ?1 was frightened for my own   40 , and blamed myself for having  41  decided to take a new route home that night．Shouldn't I justrunto the nearest phone and call the  42  ?

Although it seemed an etemity（漫长）,the deliberations in my head had  43  only sec-onds, but already the girl's cries were growing   44  I knew I had to act fast． How  45  I  walk away from this? No,Ifmally determined,  I  could not tum my back on the  46  of  this Unknown woman, even if it meant  47   my ownlife．

I am not a brave man, nor amI athletic．I don't know where I found the moral  48     and physical strength- but once I had finally determined to help the girl,I became strangely    49  I ran behind the bushes and pulled．the attacker  50   the woman． Grasping, wefell to the ground, where we wrestled for a few mrnutes until the manjumped up and escaped．

Breathing hard,I stood upright and   51  the  girl, who stayed down behind a tree, sob-bing．In the darkness,I could barely see her outline, but I could certainly  52  her trem-bling shock．Not wanting to frighten her further,I  53  spoke to her from a distance． "The man ran away． You're safe now．’’There was a long pause and then I heard the words, said in  wonder, in  54 ．"Dad, is that you?" And then, from behind the tree, out  55  my  youngest daughter, Katherine．

36．A．broke down   B．slowed down   C．calmed down  D．tumed down

37．A．when        B．until        C．before         D．though

38．A．quarrel        B．conversation  C．struggle        D．dispute

39．A．involved      B．informed     C．conquered    D．deserted

40．A．property      B．safety          C．appearance    D．presence

41．A．quickly        B．bravely        C．suddenly      D．cleverly

42．A．friend          B．neighbour    C．folk         D．police

43．A．abandoned          B．covered       C．held        D．taken

44．A．louder         B．clearer         C．weaker        D．heavier

45．A．should         B．could       C．would          D．must

46．A．fate         B．face         C．moment       D．spot

47．A．saving         B．risking         C．losing          D．devoting

48．A．lesson          B．spirit       C．story       D．courage

49．A．behaved       B．performed    C．transformed   D．Expressed

50．A．off          B．down         C．from       D．over

51．A．attended      B．appreciated  C．negotiated     D．approached

52．A．sense       B．feel         C．observe        D．hear

53．A．after all       B．at first         C．as well         D．asa result

54．A．surprise       B．disappointment C．sorrbw         D．amazement

55．A．cried       B．looked         C．stepped        D．showed