9．下列数据是对应物质的熔点

据此做出的下列判断中错误的是

A．铝的化合物的晶体中有的是离子晶体　　　　

B．表中只有BCl₃和干冰是分子晶体

C．同族元素的氧化物可形成不同类型的晶体　　

D．不同族元素的氧化物可形成相同类型的晶体

8．有三种说法：①NH₄NO₃中氮元素显+5价；②4FeS₂+11O₂→2Fe₂O₃+8SO₂反应中+2价铁和-2价硫都被氧化；③氧化还原反应中还原剂得电子数与氧化剂失电子数一定相等。这三种说法中错误的是

　　 A．只有①　　 　　　　　 B．只有②③　　 　　 C．只有①③　　　　　 D．①②③

7．设N_A为阿伏加德罗常数的值，下列说法正确的是

A．0.1mol Fe与0.1mol Cl₂充分反应，转移的电子数为0.3N_A

B．1mol H₂O₂完全分解生成H₂O和O₂时，转移了N_A个电子

C．1mol C₁₀H₂₂分子中，含有共价键数目为32N_A

D．0.5mol Na₂O₂中含有N_A个阴离子

6．下列化学用语书写正确的是

A．N₂的结构式：　　　　　　　 B．CO₂的分子模型：

C．氧离子结构示意图： 　　　　D．四氯化碳的电子式：

5．从下列事实所列出的相应结论正确的是 　　　　　　　　

4．

① AgNO₃溶液、稀氨水　　　　　　　　　　 ② Al₂(SO₄)₃溶液和NaOH溶液

③ NaHCO₃、NaHSO₄、Ba(NO₃)₂、NH₄Cl　　 　④ NaNO₃、FeCl₃、NaCl、AgNO₃

A．只有①②　 　　　　 B．只有④　　　　　　　　 C．只有①②③　 　 D．①②③④

3．根据相关化学原理，下列判断正确的是

A．若X是原子晶体，Y是分子晶体，则熔点：X<Y

B．若KXO₃+Y₂===2KYO₃+X₂，则氧化性：Y₂> X₂

C．若R^2- 和M⁺的电子层结构相同，则原子序数：R>M

D．若弱酸HA的酸性强于弱酸HB，则同浓度钠盐溶液的碱性:NaA<NaB

2．以下各分子中，所有原子都满足最外层为8电子结构的是

A．H₃O⁺　 　　　B．BF₃　　　 C．P₄　　 D．PCl₅

1．在通常条件下，下列各组物质的性质排列正确的是

A．熔点：CO₂>KCl>SiO₂　 　　B．水溶性：HCl>Cl₂>SO₂

C．沸点：乙烷>戊烷>丁烷　 　　D．热稳定性：HF>H₂O>NH₃

第二节

Ⅰ. Q6-8

M: Excuse me. Have you been waiting long?

W: Um…About ten minutes.

M: Did you notice whether the No.7 bus has gone by?

W: Not while I was standing here. I’m waiting for the No.7 myself.

M: Good. Hot today, isn’t it?

W: Oh, yes, it is. I wish that it would rain and cool off.

M: Me，too. This is unusual for March. I don’t remember it ever being so hot and dry in March before.

W: You were born in Florida then.

M: No, I was born in New York. But I’ve lived here for ten years now.

W: My mother and I have just moved here from Indiana.

M: Pretty cold in Indiana, isn’t it?

W: Oh, yes. That’s why we moved. But we didn’t know that it would be so hot here. We should have gone to California. Do you think we’ve missed the bus? I’ve been here for 20 minutes already.

M: Don’t worry. It never comes exactly on the half hour like it should.

Ⅱ. Q9-10

　　　 W: Hey, did you see the article in today’s college newspaper?

　　　 M: No, I’ve been studying all morning. What’s so exciting?

　　　 W: Well, this April, the school is going to have its own radio station.

　　　 M: Oh, really? I hope that means we’ll have more popular music to listen to now.

W: Actually, I don’t know if I would get so excited. The article stated that there would be programs on all sorts of music as well as discussion and teaching programs.

M: Too bad. It sounds as though there won’t be much time for good music.

W: The station is going to be on all day and all night without stopping. So I’m sure it will satisfy all kinds of tastes.

M: I certainly hope so. At least it’s better than nothing.

Ⅲ. Q11-13

W: Did you hear the good news about David? He’s living in Australia now and he loves it. He started a business and he’s now very rich. It seems it’s so easy to make money there.

M: Oh, I haven’t heard the news, but I’m not surprised. David has a sharp eye for business. The grass is always greener on the other side. Do you want to go abroad too?

W: No, but I know for a fact that people in Australia are more wealthy. Where we are, everyone is trying to save money. It’s practically impossible to make money here.

M: That’s true. To tell you the truth, my business isn’t doing well at all. Customers aren’t coming like they used to. I’m really considering selling the business and starting in another market. Maybe I’m too nervous about these things.

W: I wouldn’t say that. According to the governement, this is the worst time we’ve had in history. They say the best thing you can do is to keep working and try to wait until all things improve.

Ⅳ. Q14-16

　　　 W: Hello, Tom. When are you taking off for Beijing?

　　　 M: Next Monday morning.

　　　 W: How are you getting there, by air?

　　　 M: No, by train.

W: Is anybody seeing you off?

M: Yes. The manager is seeing me off. I’m going to buy telephone equipment for our company.

Ⅴ. Q17-20

　　　 　 Many centuries ago, all people lived on seeds and plants. They did not know how to farm or raise animals for food. Because they used stone tools, we call them the Stone Age People. There are people who still live much like the Stone Age people lived. They live in places that are hard to reach. Since they have met few outsiders, they don’t know about modern inventions, they have not learned ways of doing things from others. For 25,000 years, such groups of people have lived alone in the middle of Australia. One of the groups is the Kooris. They do not know how to farm, nor do they raise animals. The Kooris spend most of their time searching for food and water. The men hunt animals with stone-tipped spears. The women and children look for roots, seeeds and nuts. Several Kooris families live together as a group. They have no houses. At night, they sleep around fires.