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第二节 听取信息(共5小题;每小题1分,满分5分)

   听下面一段独白,请根据题目要求,从所听到的内容中获取必要的信息,填人答题卡标号为16-20的空格中。听录音前,你将有10秒钟的阅题时间,录音读两遍。你将有60秒钟的作答时间。

When
Who
What to do
Early in  16  
Mankind
Found a way to make pictures   17   .
In 1884
George Eastman
Invented a kind of film that   18    into a small camera.
Today
  19   
Aids scientists by taking pictures through microscopes and telescopes
Deep-sea Divers
Take pictures of   20    and animals

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第一节 听力理解 (5段共15小题;每小题2分,满分30分)

   每段播放两遍。各段后有几个小题,各段播放前每小题有5秒钟的阅题时间。请根据各段播放内容及其相关小题,在5秒钟内从题中所给的A、B、C项中,选出最佳选项,并在答题卡上将该项涂黑。

听第一段对话,回答第1-3题。

1. How did Billy feel about his math test?

  A. It was hard.          B. It was easy.             C. It was too long.

2. When will they have supper?

  A. At about 5 o’clock.     B. At about 6 o’clock.       C. At about 6:30.

3. What can we learn from the conversation?

  A. Billy likes snowboarding very much.

  B. Billy will go to the church with George.

  C. Billy is so careless that he often hurts himself.

听第二段对话,回答第4-6题。

4. Why does the man want this part-time job?

A. He has to pay for his apartment.       B. He has done the work before.

C. He has much free time.

5. What job will the man get?

A. A clerk in the mailroom.           B. A dishwasher at the restaurant.

C. A lifeguard for summer vacation.

6. How much can he earn every day?

A. $20.       B. $40.       C. $80.

听第三段独白,回答第7-9题。

7. What is the main purpose of the speech?

A. To tell the students how to collect rubbish.

B. To compare different recycling programs.

C. To encourage the students to join in a recycling program.

8. What do we know about the program?

A. The searching is the most difficult part in the program.

B. The program has been given up on the campus.

C. The program is more than a volunteering task.

9. According to the speaker, why are many recycling programs NOT successful?

A. Because most recycling rules are not clear.

B. Because most people are unwilling to sort rubbish.

C. Because most collecting tasks are too difficult.

听第四段对话,回答第10-12题

10. What does the woman want to do?

  A. She wants a short tour in London.

  B. She wants to go to the Hyde Park Hotel.

  C. She wants to ask the way to the British Museum.

l1. How much will the woman pay for her tour?

  A. £9.5.         B. £5.3.            C. £15.

12. When can the woman visit London Tower?

A. In the afternoon.

 B. Right after lunch.

  C. In the morning.

听第五段对话,回答第13-15题。

13. What is the probable relationship between the two speakers?

  A. House agent and customer.

   B. Waiter and customer.

  C. Husband and wife.

14. What does the man like about the house?

   A. Public transportation.

   B. The swimming pool.

   C. The shopping centre.

15. What do we learn from the conversation?

  A. There is a gym just upstairs.

  B. The apartment has two bedrooms.

C. The apartment has a great ocean view.

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25.(6分)

标准状况下1.68L无色可燃气体在足量氧气中完全燃烧,若将产物通入足量澄清石灰水,得到的白色沉淀质量为15.0g;若用足量碱石灰吸收燃烧产物,增重9.3g。若原气体是两种等物质的量的气体混合物,其中只有一种是烃,请写出它们的分子式(只要求写出两组)。

  

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24.(18分)

有机物A、B、C,分子式均为C5H8O2,有关的转化关系如下图所示。A的碳链无支链,且1mol A能与4 mol银氨溶液完全反应。请给出A、B、C、D、E、F、G、H、I的结构简式。

已知:

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23.(10分)

已知从A出发可发生下图所示的一系列反应,其中G为高分子化合物,化合物B的分子式为C8H8O,当以铁做催化剂进行氯化时,一元取代物只有两种。 

 

填空:

    (1)结构简式:A        、M       

   (2)反应类型:I        、IV       

   (3)写出下列反应的化学方程式:

   BC:           ;C+DH:           

   (4)与C互为同分异构体且均属于酯类的芳香族的化合物共有      种。

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22.(12分)

氮可以形成多种离子,如等,已知N2H5+与N2H62+是由中性分子结合质子形成的,类似于NH4+,因此有类似于NH4+的性质。

    (1)写出N2H62+与碱溶液反应的离子方程式                   

    (2)的电子式为                   .

    (3)            个电子。

    (4)写出等电子体物质的化学式                   。(一种)

    (5)等电子数的微粒往往具有相似的结构,试预测的构型         

    (6)据报道,美国科学家卡尔·克里斯特于1998年11月合成了一种名为“N5”的物质,由于其具有极强的爆炸性,又称为“盐粒炸弹”。迄今为止,人们对它的结构尚不清楚,只知道“N5”实际上是带正电荷的分子碎片,其结构是对称的,5个N排成V形。如果5个N结合后都达到8电子结构,且含有2个NN键。则“N5”分子碎片所带电荷是     .  

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