23、几种短周期元素的原子半径及主要化合价见下表：

下列叙述正确的是　　　　　　　　　　　　　　　　　　　　　　　　　 (　　 )

　A．L、M的单质与相同浓度盐酸的反应速率：L＞M　

B．M的氧化物对应的水化物可能具有两性　 　

　C．电解熔融的MCl₃制取单质M　 　　　　　D．L、Q形成的简单离子核外电子数相等

22、下图装置(Ⅰ)是一种可充电电池的示意图，装置(Ⅱ)为电解池的示意图。装置(Ⅰ)的离子交换膜只允许Na⁺ 通过。已知电池充、放电的化学反应方程式为

2Na₂S₂+NaBr₃Na₂S₄+3NaBr。当闭合开关K时，X极附近溶液变红色。下列说法正确的是

A．闭合K时，钠离子从左到右通过离子交换膜

B．闭合K时，负极反应为3NaBr－2e^－＝NaBr₃+2Na⁺

C．闭合K时，X电极的电极反应式为2Cl^- -2e^- = Cl₂↑

D．闭合K时，有0.1 mol Na⁺通过离子交换膜，X电极上析出标准状况下气体1.12 L

12、下列实验操作正确的是

①蒸馏时，应使温度计水银球插入蒸馏烧瓶液体中

②测溶液pH 时，用玻璃棒蘸取溶液点滴到放在表面皿上的pH 试纸上

③制乙酸乙酯时，把乙醇和乙酸依次加入浓硫酸中

④制乙烯是，为了防止暴沸，要向反应液中加入碎瓷片

⑤滴定管洗净后经蒸馏水润洗，马上注入标准液进行滴定

⑥加热坩埚中的硫酸铜晶体，失水后在空气中冷却，再称量

⑦分液时，分液漏斗中下层液体从下口放出，上层液体从上口倒出

A、①③⑤⑦　　 B、②④⑥　　 C、②④⑦　　 D、④⑤⑥⑦

11、下列是某同学对相应反应的离子方程式所作的评价，其中评价合理的是

编号	化学反应	离子方程式	评价
A	碳酸钙与醋酸反应	CO32-+2CH3COOH =CO2↑+H2O+2CH3COO-	错误，碳酸钙是弱电解质，不应写成离子形式
B	苯酚溶液中通入少量CO2	2C6H5O-+CO2+H2O→ CO32-+2C6H5OH	正确
C	NaHSO3的水解	HSO3-+H2O SO32-+H3O+	错误，水解方程式误写成电离方程式
D	等物质的量的FeBr2和Cl2反应	2Fe2++2Br- + 2Cl2 ==2Fe2++Br2+ 4Cl-	错误，Fe3+与Br-的物质的量之比与化学式不符

10、西维因是一种高效低毒杀虫剂，在一定条件下可水解：

有关说法正确的是

A． 西维因分子式为C₁₂H₁₀NO₂　 　　　B．反应后经酸化，可用FeCl₃溶液检验是否发生水解

C．1mol西维因最多能与6mol氢气发生加成反应 　D．西维因分子中至少有21个原子共平面

9、一定温度下，在2 L的密闭容器中发生如下反应：A(s)+2B(g)xC(g) △H＜0，B、C的物质的量随时间变化的关系如图1，达平衡后在t₁、t₂、t₃、t₄时都只改变了一种条件，逆反应速率随时间变化的关系如图2。

下列有关说法正确的是

A．x＝2，反应开始2 min内，v(B)＝0.1 mol/(L·min)

B．t₁时改变的条件是降温，平衡逆向移动

C． t₃时可能是减小压强，平衡不移动；t₄时可能是使用催化剂，c(B)不变

D．t₂时改变的条件可能是增大c(C)，平衡时B的物质的量分数增大

8、下列叙述正确的是

A．常温时，某溶液中由水电离出来的c(H+)和c(OH－)的乘积为1×10－24，该溶液中一定可以大量存在K+、Na+、AlO2－、SO42－

B．常温时，0.1mol/LHA溶液的pH＞1，0.1mol/LBOH溶液中c(OH－)/c(H+)=1012，将这两种溶液等体积混合，混合后溶液中离子浓度的大小关系为：

　c(B+)＞c(OH－)＞c(H+)＞c(A－)

C．过量SO2通入到Ba(NO3)2溶液中，正确的离子反应方程式为：

　3SO2+2NO3－+3Ba2++2H2O=3BaSO4↓+2NO↑+4H+

D．用pH=3和pH=2的醋酸溶液中和含等量NaOH的溶液所消耗的醋酸溶液的体积分别为Va和Vb，则Va＞10Vb

7、华裔科学家高琨因“在光纤传输信息领域中的突破性成就”获得2009年诺贝尔物理学奖，下列有关硅材料的说法正确的是

A．光纤的主要成分是高纯度的单质硅　　 B．金刚砂的主要成分是二氧化硅

C．28g硅含有6.02×10²³个电子　　　　　 D．²⁸Si、²⁹Si、³⁰Si是不同的核素

As we can see in the picture, two workers are working very hard building the railroad. When their boss comes, he is shocked to find that their tracks have failed to meet the set of tracks coming from the opposite direction.

Keep your goals in mind and constantly compare what you are doing with your goals. That’s what I’d like to say to the men. It is easy to get lost in the details of our lives, forgetting about the way we are heading, just like the two workers buried in their present task. If they keep on working like this, they will never achieve their goals.

Make sure you are on the right track towards your goals, and you will see growth each time you make an effort.

　　　　　　　　 录音原文

Text 1

M: Excuse me, could you please tell me if the Miami flight will be arriving on time? W: Yes, sir. It should be arriving in about 10 minutes at Hall C.

M: Thanks.

Text 2

M: Since it’s rush hour, let’s take the underground. W: OK. It’s not as direct as the bus but it’s faster.

M: Yeah. And there will be less chance of a traffic jam.

Text 3

M: Jane told me you were on a diet.

W: Yes, I am. M: How much weight have you lost? W: Well, to start with, I weighed 150 pounds. The first two weeks I took off 10 pounds, but then I

　 gained back 5 pounds over the holiday.

Text 4

M: What do you think of Professor Smith’s class? W: Well, his lectures are interesting enough but I think he could choose some easier questions for 　

　 the tests.

M: I couldn’t agree more.

Text 5

W: The biology class next Monday has been replaced by a chemistry class. M: That’s awful. I’m not prepared for that.

W: Me neither. I wish we would have an English class.

Text 6

M: Lakefield’s. Good morning. W: Good morning. This is Diana Watson. I’m afraid I have a problem with my appointment next

　 week.

M: Would you please tell me the reason?

W: Oh, I’m away all week. M: Fine, so you’re canceling your appointment at 12 midday on Wednesday. Then, would you like

　 to make another appointment now? W: No. I haven’t got my diary here. I’ll call next week. M: OK, Mrs. Watson. Thank you, Goodbye.

Text 7

M: Hi, Jane, I wonder if you’re free tomorrow night. W: Well, George, I guess I am. Why do you ask?

M: I have just got a pair of pre-sale “Star Wars” movie tickets from a friend and was thinking

　 of inviting you along for the opening show. Are you interested?

W: Of course, I am! Thanks for inviting me!

M: No problem.

W: So, what time are we going?

M: Well, let’s see. The movie starts at 10 PM. We should get there at least half an hour earlier 　

　 because there’ll be a long line. I think I could pick you up at your house at 9, if that’s OK with 　

　 you.

W: 9 o’clock? That’s fine with me.

M: Okay, good.

W: So, see you tomorrow at 9 then?

M: Yeah. That’s great. I’ll see you tomorrow night, Jane.

W: Okay, George. Bye!

M: Bye, Jane.

Text 8

W: Hi! Welcome to the Service Centre. How can I help you? M: Hi, yes. I’m interested in renting a two-bedroom apartment.

W: Well, I would like to ask you a few questions before I show you what we have available, so 　

　 that we will be able to match your needs better. First, what price range are you interested in?

M: Somewhere between $400-$450 a month.

W: Okay. Do you have a specific location in mind?

M: Well, I would like to live somewhere near the university. Or at least on a bus line.

W: And when would you like to move in?

M: On the first of the month.

W: Okay. Here are the photos of the apartments that fit your preferences.

M: Thank you. The one on Broadway Avenue looks nice. I would like to see it. And the one on

　 Main Street.

W: Sure. Let me get the keys and we will go look at them. If you choose to rent one of them, we

　 would need some money for possible damage. You will be responsible for everything inside. If

　 you like, we can sign an agreement today.

M: Great! Thank you.

Text 9

　　 Ladies and gentlemen, may I have your attention, please. Before I go on to talk about our targets for the coming year, let’s have a look at our performance over the year. Since I am in charge of our company, I’m going to divide my review into two parts: first, financial and then technology. On the financial front, the results have been very pleasing. The whole sale has increased by 28%, costs have dropped by 3% and profits are up by 16%. So the company as a whole has performed well. Some sales have done very well, especially in China, our largest export market. The consumer market at home has been very competitive and will continue to be so. Our results in this market have been rather disappointing, just 2% up compared with last year.

Text 10

W: Come on, Bob. Let’s get ready for the ski trip in Europe.

M: Yes, but what’s the exact date to leave?

W: January 9^th I think.

M: OK. Well. I don’t need to get ready. I can just take a few things, you know, a ski jacket, a sweater, my ski boots. I don’t need much.

W: You need more than that. How about gloves? And how about a hat? You’ve got a great black ski hat. Take that.

M: Oh, right. Where is my hat? Great. I found it. And here are my black gloves. Ahhh…here’s my blue sweater. I’ll take this too. What else? Maybe I’ll take this…

W: Bob, our hotel has a swimming pool. Take a swimming suit. Your blue one.

M: Right, right. My blue swimming suit. You know, I got it in Italy. It cost me $354. I like it very

　 much. Then…

W: Then, what else?

M: Of course, I’ll take my white bathrobe. Well, I think I am ready… Wait, I guess I’ll take my

　 black suit, too. And this white shirt and my red tie. So we can go out at night.

W: I thought you only needed a ski jacket, a sweater and a pair of ski boots.

M: No. Actually, what I need is a bigger suitcase. I think I’ll take an extra pair of jeans, and maybe a few more shirts…

W: Bob, that’s too many things.

5．词数少于50，从总分中减去1分。