题目

（08安庆一中三模）（14分）X、Y、Z、W是原子序数依次增大的短周期元素，互不同族，其中只有两种为金属元素；X原子的最外层电子数与次外层电子数相等；X与W、Y与Z这两对原子的最外层电子数之和均为9。Y和W的单质都能与NaOH溶液反应。请回答下列问题：（1）Y、Z、W的原子半径由小到大的顺序是____________________（用元素符号表示）。（2）Z和W在一定条件下能形成化合物ZW2，分子中各原子均达到了8电子稳定结构，则ZW2的电子式是_______________；它在常温 听力 第一节(共5小题；每小题1.5分，满分7.5分) 听下面5段对话。每段对话后有一个小题，从题中所给的A、B、C三个选项中选出最佳选项，听完每段对话后，你都有10秒钟的时间，有关小题和阅读下一小题。每段对话仅读一遍。 1．What will the weather be like this afternoon? A．Sunny． B．Rainy． C．Windy 2．Where does the conversation most probably take place? A．In an office． B．At home． C．In a restaurant． 3．What does the boy want to be in the future? A．A businessman． B．A lawyer． C．A professor． 4．What is the man doing? A．Expressing thanks． B．Offering help． C．Asking for permission． 5．What does the man mean? A．He won't take the luggage with him． B．He'll deliver the luggage by car． C．He doesn't need any help with the luggage． 第二节(共15小题；每题1.5分，满分22.5分) 听下面6段对话或独白。每段对话或独白后有几个小题，从题中所给的A，B，C三个选项中选出最佳选项。听每段对话或独白前，你将有时间阅读各个小题，每小题5秒钟；听完后，每小题将给出5秒钟的作答时间。每段对话或独白读两遍。 听第6段材料，回答第6至8题。 6．Where does this conversation take place? A．In a supermarket． B．In a night club． C．In a restaurant． 7．What kind of snack does the woman have? A．Pancake． B．Salad． C．Chips． 8．How much does the woman pay for the things she asked? A．75 pence． B．1.30 pounds． C．2.05 pounds． 听第7段材料，回答第9至11题。 9．Which age group do the two speakers most likely belong to? A．Young． B．Old． C．Middle-aged． 10．Which part of the body is probably OK with the woman? A．Her leg． B．Her back． C．Her eyes． 11．Why can't the man do gardening a lot? A．Because of his back trouble． B．Because of his leg trouble． C．Because of his arm trouble． 听第8段材料，回答第12、13、14题。 12．How does the man feel? A．Sad． B．Happy． C．Excited． 13．What's wrong with the man? A．He had an accident in the car． B．He was knocked down by a car． C．He had an accident when he was walking along the street． 14．Why did it happen? A．Because the other driver drove too fast． B．Because there's something wrong with the roadside mirror． C．Because there's something wrong with the driving mirror． 听第9段材料，回答第15、16、17题。 15．Where is Miss Smith? A．She is at home． B．She is taking a break． C．She is attending a meeting． 16．When should Miss Smith call to tell whether she will attend the meeting or not? A．On Thursday． B．Today． C．The day after tomorrow． 17．What number should Miss Smith call? A．802 8714-246． B．802 9714-246． C．902 8741-426． 听第10段材料，回答第18、19、20题。 18．Why couldn't the speaker meet with Mr.Smith as soon as he arrived? A．He was sick． B．He arrived late． C．He missed the appointment． 19．Why did he give up making a new appointment with Mr.Smith? A．He couldn't reach Mr.Smith's office． B．He didn't want to see Mr.Smith any more． C．He didn't want to take the trouble making it． 20．Whom did he meet on the street one day? A．Mr.Smith． B．Mr.Smith's secretary． C．A stranger．