8．和丙醇组成的混合物中氧的质量分数为8%，则此混合物中氢的质量分数为       （    ）

   A．78%                B．22%               C．14%、           D．13%

7．2―氨基―5―硝基苯甲醚俗称红色基B，主要用于棉纤维织物的染

       色，也用于制金黄、枣红、黑等有机颜料，其结构简式如右所示。

       若分子式与红色基B相同，且氨基与硝基直接连在苯环上并呈对位

       时的同分异构体数目（包括红色基B）可能为       （    ）

       A．2种                    B．4种                  C．6种                    D．10种

6．有机物C₄H₈O₃在一定条件下的性质有：在浓硫酸存在下，可脱水生成能使溴水褪色的只有一种结构形式的有机物；在浓硫酸存在下，能分别与乙醇或乙酸反应；在浓硫酸存在下，还能生成分子式为C₄H₆O₂的五元环状有机物。则有机物C₄H₈O₃的有关叙述正确的

                                                                                                                              （    ）

       A．C₄H₈O₃的结构简式为HOCH₂CH₂CH₂COOH

       B．C₄H₈O₃的结构简式为CH₃CH(OH)CH₂COOH

       C．C₄H₈O₃为α―羟基丁酸

       D．C₄H₈O₃为羟基乙酸乙酯

5．“喷水溶液法”是最近日本科学家研制出的一种使沙漠变绿洲的技术，它是先在沙漠中喷洒一定量的聚丙烯酸酯水溶液，水溶液中的高分子与沙土粒子结合，在地表下30～50cm处形成一个厚0.5cm的隔水层，既能阻止地下的盐分上升，又有拦截、蓄积雨水的作用，下列对聚丙烯酸酯不正确的说法是                                     （  　）

　　A．单体的结构式为CH₂   CH―CO―OR

　　B．在一定条件下能发生加成反应

　　C．在一定条件下能发生水解反应

　　D．没有固定熔沸点

4．可用来鉴别苯酚溶液、乙酸乙酯、乙苯、庚烯的一组试剂是                           （    ）

    A．银氨溶液、溴水                                 B．酸性高锰酸钾溶液、氯化铁溶液

    C．酸性高猛酸钾溶液、溴水                   D．氯化铁溶液、溴水

3．分子式为C₄H₉Cl的同分异构体有                                                                   （    ）

    A．1种                    B．2种                    C．3种                    D．4种

2．过氧乙酸是在抗SARS病毒期间常使用的一种高效杀毒剂，其分子式为C₂H₄O₃，它具有氧化性，漂白作用，下列物质中漂白作用原理与过氧乙酸不同的是                                          （    ）

    A．氯水（次氯酸）                                 B．臭氧

    C．活性炭                                               D．过氧化钠

1．（05上海）苏丹红是很多国家禁止用于食品生产的合成色素。结构简式如右图。关于苏丹红说法错误的是                                           （    ）

    A．分子中含一个苯环和一个萘环                                                                   

    B．属于芳香烃

    C．能被酸性高锰酸钾溶液氧化                                                                             

    D．能溶于苯

36. Just as IOC President Rogge said, the Five Friendlies are a little f____, chosen carefully by Beijing 2008 to represent all of China and to carry a message of friendship to the children of the world.
37. The camera which he bought in Hong Kong last year has been d____ by his little son.
38. It’s d_____ to ride a motorcycle without a helmet.
39. The Smiths have two d_____ and one son, all of whom are working abroad.
40. Her d_____ to marry an 80-year-old man surprised everybody.
41. Who cooked this? It’s d_______.
42. They want to know what the d_____ of the well is.
43. The police asked her to give a detailed d_____ of what had happened.
44. He d______ a lecture on genetic engineering as planned.
45. Modern industrial development has almost d_____ the natural environment in some way, which the humans must rely on.
46. Nothing could be done to save the patient and he was d_____ fast.
47. Read the d______  on the bottle carefully before taking the medicine.
48. In recent years he has made two important scientific d______.
49. The problem which came up at yesterday’s meeting is under d_______.
50. The world is d_____ into seven continents.
51. The accident was due to careless d_____.
52. The machine is run by e______ not by man power.
53. All the e_____ except the manager are encouraged to work online at home.
54. Young people usually have more e_____ than old people.
55. He e_____ me my trip to Beijing.
56. I like the film very much--- e______ the last part.
57. The suit fitted me very well e_____ that the colour was a little brighter.
58. The scenery was beautiful beyond e____.
59. F_____ is the mother of success.
60. She looks f______ to me, but I don’t remember her name.
61. Will you do me the f_____ to translate this sentence into English?
62. “ What is your f______ sport ?” Jack asked me.
63. Smoking in a gas station will be f_____.
64. I looked for my watch everywhere and f_____ found it on the desk.
65. The Five Friendlies will be e_____ popular and will help to spread Olympic messages throughout the world.
66. F_____ , people are beginning to realize how serious the situation is.
67. He is a f_____ visitor to our house.
68. The radio doesn’t f_____ properly and I will have it fixed.
69. The only piece of f_____ in their living room is a sofa.
70. My friends and I have always been regarded as f_____ by the local folk.
71. March comes after F_____.
72. He has had three accidents in the past f_______.
73. The f______ to Beijing is now boarding at Gate 8.
74. These G______ are sure to read the novels written in English.
75. Now many farmers make a living by g______ vegetables.
76. Parents should help their children to form good h_____.
77. Nowadays most people use paper h_____ instead of cloth ones.
78. Judging from the h______, the letter must be written by a child.
79. Smoking is h_____ to your health. Stop smoking.
80. The problem of unemployment is a big h_____ for the government.
81. Publishing house must publish more new books h_____ to teenagers.
82. If h_____ to a high temperature, water will change to vapour.
83. Don’t h_____ to ask me for help if you have any question.
84. Are there any h_____ or sports you particularly like?
85. How will you spend your summer h_____ after the college entrance examinations?
86. The young g______ is the hope of our motherland.
87. He is a hardworking student and feels h_____ about the future.
88. What h_____ weather! We can’t go out for a picnic again.
89. China has tried every effort to become the h_____ country of 2008 Olympic.
90. He tried his best to solve the problem, however d______ it was.
91. People enjoy reading h_______ advertisements.
92. The students all have a h______ for knowledge.
93. The couple’s quarrelling and f______ hurt each other.
94. He jumped into the river to save the d______ child without hesitation.
95. The sun was h_____ by the clouds.
96. Did he have anything to say in e______ of his bad behavior?
97. The two girls are of the same age and of the same h_____.
98. The soldier was ordered to keep g_____.
99. The doctor told him to take more e_____ and eat less junk food.
100. You’ve done an e_____ job, which your parents will be satisfied with.

1． “Thank you” and “Sorry” are often used in our d____ life.
2． It is hoped that the terrible tsunami on the way can be broadcast by the advanced g_____ warning systems in future.
3． Speed skater Li Jiajun d_______ the Chinese crowd with a stunning upset( 意外的结果)，winning a bronze medal.
4． Photography is strictly f______ in the museum.
5． Her tears f______ fast at the news that both her parents had died in the flood.
6. He d___ the number 8580000 and waited.
7. Ronaldinho won the G_____ Ball on Monday as European player of the year, another honor for the Brazilian following his FIFA player of the year award last year.
8. The g______ has taken measures to curb( control ) further outbreaks of the bird flu.
9. After many f_____ and successes, he at last achieved his goal.
10. G____ must check out before noon, or they will be charged for the day.
11. Health officials are concerned about the possibility that the virus will mutate(变异) into a form that can spread e_____ from person to person.
12. E_____ pollution should be paid enough attention to by the local government and citizens.
13. The children g_____ in the garden to set off fireworks.
14. The students set up a small laboratory and d_____ every moment to the learning project.
15. The words of his head teacher, which were said at the g_____ party, left a lasting impression in his mind. He’s still affected by them.
16. Taiwan people are warmly welcoming and e_____ the arrival of panda couple.
17. As is well known, Britain and France are E_____ countries.
18. I was so f_____ by the sight that I would not take my eyes off it.
19. There is not much f_____ in the house he rented.
20. If you are e_____ by a company, you are an employee.
21. Class Two are holding a class meeting, e_____ the experience of learning English.
22. Jack and his classmates are doing a chemistry e______ in the second lab.
23. According to the constitution, everybody in that country enjoys f_____.
24. China is made up of many peoples, so we can enjoy the cultural d_____.
25. There is no clear e______ to show that he is doing something wrong. You’d better get something to prove if you think so.
26. Most of the story Robin Hood happened on a d_____ island.
27. News that China was to h_____ the 2008 Olympic Games excited every Chinese.
28. Our school has been given some new e_____ , such as computers and TVs.
29. Please remember to finish your composition and hand them in before the d______.
30. Everybody wants to go for an outing. There is almost no d_____ about the plan.
31. His health is g____ improving because of the doctor’s successful treatment.
32. The American cyclist Lance Armstrong was d____ with cancer and many thought it meant the end of his career.
33. She was less e_____ than others about going to Huangshan because she had been there twice.
34. He can’t afford to travel abroad once a year at his own e_______.
35. Little Tom is more d_____ than intelligent.