Guangdong college entrance examination simulation test paper

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Guangdong 2007 new curriculum standard college entrance examination simulation volume (8 sets of arts and sciences)

Chaoyang No.1 Middle School and No.3 Middle School have a basic math exam (literature and science)

In 2007, Guangdong college entrance examination simulated mathematics examination questions (science). document

A- A full analysis of the baseline exam in August of senior three in Nanhai Middle School, Nanhai District, Foshan City (text). document

In 2006, the next high school midterm exam (science mathematics) was held in Shunde District, Foshan City. document

In 2006, the next high school midterm exam (liberal arts mathematics) was held in Shunde District, Foshan City. do

Chenghai District, Shantou City, in 2007, the third year of high school mathematical model examination paper (science). document

Examination paper (text) of mathematical model of senior three in Chenghai District of Shantou City in 2007. document

C- Huizhou City in 2007, the first research-oriented examination of senior three mathematics (science). document

C- Huizhou City in 2007, the first research-oriented examination of senior three mathematics (text). document

D- Shaoguan City in 2007 senior high school entrance examination mathematics examination questions (science). document

D- Find out the math test questions of senior three in Shaoguan City in 2007 (text). document

In 2007, electronic Shenzhen senior three mathematics examination questions (liberal arts). document

E- Shenzhen 2007 college entrance examination mathematics (science) simulation test questions (June 2006 10). document

In 2007, Guangdong college entrance examination simulated the basic examination paper of liberal arts.

This paper is divided into two parts: the first volume (multiple choice questions) and the second volume (indefinite multiple choice questions). The perfect score is 150.

The first volume (multiple choice questions *** 126)

Of the four options given in each question, only one is the most appropriate. This big question is ***63 small questions. 2 points for each small question, *** 126 points.

1. "Culture" in cultural life refers to ()

① "culture" in Socialism with Chinese characteristics culture.

(2) Literature and art, scientific knowledge and people's education level.

(3) All human activities and achievements in transforming the world.

(4) all economic and political related human spiritual activities and their products.

A.①② B.②③ C.③④ D.①④

2. Guangdong's cultural industry has a considerable foundation and scale, and its market share and technical content are in the forefront of the country. At present, the added value of Guangdong culture and related industries is11227.6 billion yuan, accounting for nearly 7% of the total GDP, which is the highest in the country. This shows that ()

A. International cultural competition is becoming increasingly fierce.

B. the cultural industry has strong political permeability.

C cultural exchanges and cooperation have become an important part of the diplomacy of all countries.

D. the cultural industry has great economic benefits.

3. Schiller said: "People's perfection needs to be realized in culture." This shows that ()

A. Culture influences people's practical activities B. Excellent culture can enhance people's spiritual strength.

C. Excellent culture promotes people's all-round development D. The higher the education level, the more perfect people are.

4. "Life is the most precious thing for people, and life is only once for everyone. A person's life should be spent like this: looking back, he will not regret wasting his time, nor will he be ashamed of doing nothing. In this way, when he dies, he can say: All my life and energy have been dedicated to the most magnificent cause in the world-the struggle for the liberation of mankind. This famous saying of Paul has influenced the growth of several generations of revolutionary youth. This shows that ()

A. People's world outlook, outlook on life and values are the result of the interaction of various cultural factors.

B World outlook, outlook on life and values have a profound and lasting impact on people's comprehensive quality and lifelong development.

C world outlook, outlook on life and values are the core and symbol of people's cultural literacy.

D. Famous sayings have the greatest influence on people

When a certain culture spreads through the media and becomes a public concern, it becomes a cultural phenomenon. Cultural phenomena exist all the time. Of the following statements about "culture", the correct one is ()

(1) Culture is created by people and unique to people; (2) Culture is the product of people's social practice.

③ Culture is a social spiritual force ④ Culture is a material means for people to know and transform the world.

A.①②③ B.②③④ C.①③④ D.①②④

When we visit historical sites, we can often see through the spiritual world and life of ancient people in China. This shows that ()

A. spiritual things have nothing to do with material things. Spiritual things are material things.

C. Spiritual products cannot be separated from material carriers. D. Material activities cannot be separated from spiritual activities.

7. The ancient poem "Teenagers leave home, old people return, and the local accent has not changed." "Local accent has not changed" shows the influence of culture on people ()

A. subtle characteristics B. far-reaching and lasting characteristics

C. Characteristics of relative independence D. Characteristics of differences

2005 is the 600th anniversary of Zheng He's voyage to the West. 600 years ago, Zheng He led his fleet to sea seven times, which lasted for 28 years. It has created the largest spread of Chinese culture in the history of China. Answer questions 8-9 accordingly.

8. The following statement about cultural exchange is true ()

A. Cultural communication refers to people transmitting knowledge, information, thoughts, emotions and beliefs in a certain way, as well as all social communication activities related to them.

B. Traditional culture is passed down through this mode of communication.

C modern information technology is increasingly becoming the only means of cultural exchange.

D. Every cultural journey in the world from ancient times to the present contributes to the spread of China culture.

9. Zheng He's contribution to human civilization is ()

It has spread Chinese civilization and promoted economic and cultural exchanges and economic and trade exchanges.

③ Contributed to the development of world culture ④ Created a new form of mass media.

A.①②③ B.②③④ C.①③④ D.①②④

10. This painting tells us ()

A. Every nation in the world has its own unique culture.

B. Culture is both national and global.

C different national cultures have their own characteristics and universal laws.

D. there is no boundary between the nationality and the world of culture.

Confucius belongs to China and the whole world.

1 1. Mao Zedong said: "From Confucius to Sun Yat-sen, we should sum up and inherit this precious heritage." Mao Zedong pointed out that "heritage" refers to ().

A. Inheritance of traditional customs B. Inheritance of traditional architecture

C. Inheritance of traditional literature and art D. Inheritance of traditional ideas

12. "Bright moon in the sky, brightening the whole of heaven" expresses the () of the Chinese nation.

A.b. Diversity of national cultures

C. Relative stability of national culture D. National culture is both national and global.

13. In order to write Compendium of Materia Medica, Li Shizhen made a field trip to Wan Li, not only asking for advice from others, but also paying more attention to his own experiments. He swallowed Datura stramonium until he lost consciousness and finally realized the anesthetic effect of this plant. This shows that ()

A. We should actively carry out cultural innovation B. Social practice is the source of cultural innovation.

C. Social practice is the driving force of cultural innovation D. We should actively carry out social practice.

14. Education is a unique dynamic activity for human beings to inherit culture. It has the specific function of selecting, spreading and creating culture, and always plays an important role in educating and cultivating people. The following understanding of the role of education in cultural inheritance is incorrect ()

A. Pass on the culture to the next generation through "preaching, teaching and dispelling doubts" to the educated.

B. it can reproduce the process of human understanding of the world in a condensed form.

C is the only effective form of human cultural inheritance.

D. make people acquire the existing cultural wealth in their limited study life.

15. "Shuo Wen Jie Zi" explains: "Zong, Zunzu Temple is also." In other words, the original meaning of "zong" in the patriarchal clan system is the ancestral hall. This shows that the bond of patriarchal clan system in China is ().

A. Property B. Region C. Belief D. Blood relationship

Qin dynasty made great contributions to the initial establishment of the territory of the motherland and the formation of the Chinese nation, and Qin Shihuang contributed a lot. The picture below shows Qin Shihuang and his frontier territory. Answer 16- 17.

16. Qin Shihuang said to his ministers at the celebration banquet held in Xianyang Palace: "Only when the world is bitter and there is no end to fighting will there be princes. Lai Zongmiao, the beginning of the world, the restoration of the country. Being an uncle and a soldier, it is not difficult for him to rest! " In order to solve the above problems, the first emperor took the measure of "seeking his peace of mind" as ()

A. Burning books and burying Confucianism B. Implementing the county system

C.d. Building the Great Wall

17. After the Qin Dynasty unified South Vietnam, three counties were established and officials were appointed to govern. Nanhai County is the predecessor of Guangzhou, and the main measure taken against Xiongnu in the north is ().

A. Open the Lingqu B. Build the Great Wall

C. Large-scale immigration to Liaodong County to build Tingchi Road

18. During the Tang and Song Dynasties, the relative power was weakened to strengthen the imperial power. One of their * * * same strategies was ().

A. establish and improve the system of three provinces and six departments B. divide the power of prime ministers

C. Zhongshu Province is the highest administrative organ.

19. The symbol of the unprecedented development of absolute monarchy is ()

A. Abolished the prime minister system that lasted for more than 1000 years in the history of China.

B in the early Wanli period of the Ming dynasty, when Zhang, the cabinet record, was in power, "all the power in the Ministry was vested in the cabinet".

C. During the reign of Kangxi in the Qing Dynasty, the Cabinet, the Council of Ministers for Deliberation and Southern Studies were three pillars, which restricted each other and finally centralized in the emperor.

The Ministry of Military Affairs, the central organization directly under the emperor, was established.

20. Look at the pictures, read the history and judge right and wrong. The wrong group is ()

( 1) (2) (3)

A. The core idea of Tu (1) is to learn from foreigners and control them; It is the purpose of Westernization School.

The core idea of Figure B (2) is that there is no unity everywhere, and no one is not warm enough.

C. the core idea of figure (3) is to develop capitalism.

D. The new chapter of Senior Minister inherits the anti-feudal aspect of China's land system, but from the perspective of social development trend and socio-economic proposition, the two are contradictory.

2 1. Hong Xiuquan advocated "land sharing" among people all over the world, and Sun Yat-sen put forward "land sharing right". The similarity between these two statements is ()

A. Oppose the land ownership of feudal landlords B. Maintain a self-sufficient small-scale peasant economy

C. it has a distinctive capitalist color. D. the land is state-owned and the products are absolutely equally divided.

22. The nature of the Boxer Rebellion is ()

A. peasant anti-imperialist and anti-feudal movement B. peasant anti-feudal and anti-aggression movement

C. Anti-imperialist patriotic movement of peasants D. Anti-feudal peasant movement

23. The same aggressive rights and interests gained by Japan in the treaty of shimonoseki and the Xin Chou Treaty are ().

A. Minister in Beijing B. Garrison C. Opening of trading ports D. Huge indemnity

24. China War of Resistance against Japanese Aggression made great contributions to the victory of the world anti-fascist war, especially in ().

A. China has the largest battlefield. B: China and War of Resistance against Japanese Aggression are the hardest.

C China has the longest anti-fascist war. D China is the main battlefield against Japanese fascism.

25. Regarding the nature of the Nanjing Provisional Government established in 19 12, the following statement is correct ().

A. a government composed entirely of bourgeois revolutionaries

B. a government in which revolutionaries and constitutionalists are equally divided.

C. government with bourgeois revolutionaries as the main body

D. A government in which old bureaucrats hold real power

26. The convening of the "First Congress" of the Kuomintang marked the establishment of the revolutionary United front, fundamentally because of it ().

A. accepted the instructions of the * * * producing country. B. the foundation of cooperation between countries has been established.

C. created the revolutionary armed forces. D. defined the goal of struggle.

27. The picture shows195365438+February, when the China delegation visited India. A classmate read the following information. Please decide that the correct group below should be ().

The central figures in this painting are Zhou Enlai and Nehru.

(2) The Five Principles of Peace were finally formed.

(3) The Five Principles of Peace were put forward by China and India.

(4) This graphic shows the maturity of new China's diplomacy.

A. 1234 is right, and there is nothing wrong with B.①③④ Right ② Wrong.

C.123 Right, ④ Wrong D.144 Right, ② 3 Wrong.

28. The Fourth Plenary Session of the 16th CPC Central Committee further put forward the task of building a harmonious socialist society, emphasizing that consolidating the social foundation of the Party's governance and realizing the historical task of the Party's governance are the inevitable requirements for adapting to the profound changes in our society and putting building a harmonious society in an important position. Several systems implemented at the beginning of the founding of New China laid a solid foundation for the construction of a harmonious society. The correct statement is ()

The system of multi-party cooperation and political consultation and the system of people's congresses.

③ Democratic regional autonomy system ④ Socialist system.

A.②③④ B.①③④ C.①②④ D.①②③

Look at the picture and answer 29-3 1:

29. The statement about the mountains in the picture is incorrect ().

A. The boundary between North China Plain and Loess Plateau B. The boundary between the second and third steps

C. Boundary between Hebei Province and Shanxi Province D. Boundary between monsoon region and non-monsoon region

30.a and B regions * * * have the resource advantage of ().

A. petroleum b coal c water d solar energy

3 1. The main reason for the outstanding environmental problems in a region is ()

A. Summer precipitation concentration B. Loose soil

C. Wind erosion D. Serious man-made destruction of vegetation

32. Since the implementation of family planning, China's annual net population increase is still above10 million, mainly due to ().

A. Low mortality B. High birth rate

C. Large population base D. High natural population growth rate

When it was snowing in Heilongjiang Province, Hainan Island was already busy with spring ploughing. This is due to our country ()

A. Long latitude span

C. there is a big difference between land and sea. D. the terrain is very different

34. The distribution law of annual precipitation in China is ().

A. it gradually decreases from south to north. B. decreasing from the southeast coast to the northwest inland.

C, gradually decreasing from north to south by d, and decreasing from the first step to the second and third steps.

35. The Qinling-Huaihe line is roughly the same as which of the following geographical boundaries ()

A.0℃ annual isotherm B. Subdividing line between subtropical zone and warm temperate zone

C. The dividing line between semi-humid area and semi-arid area D. The annual precipitation line is 400 mm.

36. You can see the plateau with the landscape of "the sky is grey, the fields are vast, the wind is blowing, and you can see cattle and sheep".

A. Qinghai-Tibet Plateau B. Inner Mongolia Plateau C. Yungui Plateau D. Loess Plateau

37. In the following four contour topographic maps, the basin is represented by ().

Antidepressants.

38. The mountain range that runs through the western mountains of North and South America is ().

A. Rockies and Andes

C. Himalayas and Alps

Map is the carrier to convey the spatial distribution, connection and time change of various natural and social phenomena. Scale, direction, legend and annotation are the three elements of a map. Answer questions 39-42 accordingly:

39. If you do a one-day field trip on foot, the following four scale maps are the least applicable ().

1:20000

One centimeter on the map of C.D. represents the distance of 250 kilometers.

40. In a relatively complete contour topographic map, there must be ().

A. pointer B. altitude and relative height C. scale D. various colors

4 1. The following statement is true ()

A. the absolute height is always greater than the relative height no matter where it is.

B On the layered color topographic map, brown is higher than yellow.

C. On the map, the elevations of mountains are all relative heights.

D. Labels are symbols on maps, which can represent mountains, rivers, cities, etc.

42. When drawing topographic profile, the main basis for choosing vertical scale is ().

A. Terrain undulation B. Size of horizontal scale

C. Relative height D. Contour density

43. The following timing data indicates the time: ()

A. Liu Xiang, a famous track and field athlete, ran in 12.95438+0 seconds 1 10m.

B. CCTV news broadcast program will be broadcast from 19.

At 0: 00 on July 1 day, our government resumed the exercise of sovereignty over Hong Kong.

As the train speeds up, the journey from Guangzhou to Shantou is shortened by 2.5 hours.

44. A team with a length of1000 m advances at a constant speed. The correspondent delivers the order from the end of the line to the front of the line, and then returns immediately. When the correspondent returned to the end of the line, the line had advanced by 200 m m, and in the process, the correspondent's displacement was ().

A.400m B.100m C.200m D.300m.

45.1991may11Beijing evening news reported such a touching story: on the afternoon of may 9, a 4-year-old boy fell from the fifth floor of a high-rise tower/kloc-0, and was caught by a young man in the same building downstairs, but survived.

a . 3.0s b . 1.6s c . 1.7s d . 1.3s

46. The following is the quatrain of "Xiangzhong" written by Chen, a poet of the Song Dynasty in China: flying flowers are red all over the boat, and the embankment is red for a long time; Lying on the boat and looking at the clouds in the sky, they didn't seem to move, but they didn't know that the clouds and I were moving eastward. When describing the movement of "I" in the poem, the frame of reference is ()

A. Both sides of the Taiwan Strait B. Flying flowers C. Clouds D. Yu Di

47. A classmate walked forward at a constant speed for a while, stopped for a while, and then returned to the starting point at a constant speed along the original road. What can reflect this classmate's action in the picture below is ().

A B C D

48. About the acceleration g of free fall, the following statement is correct ().

A. the g values of light and heavy objects in the same place are the same.

B. the g value of heavy objects is very large.

The value of the center of gravity is the same anywhere on the ground.

The D.g value of the equator is greater than that of the north and south poles.

49. A car starts from a standstill and reaches B along a straight road. The car accelerates at a uniform speed first, then decelerates at a uniform speed, and stops at point B. Its speed image is as shown in the figure, so it is within two time periods of 0-to and to-3to ().

A. the speed ratio is 3:1B. the displacement ratio is 2: 1.

C. the average speed ratio is 2:1D. the average speed ratio is 1: 1.

50. The following uses of related substances correspond to their properties: ()

A. pencil lead made of graphite: Graphite is a dark gray solid.

B. Dry ice is used as a material for artificial rainfall: CO2 is soluble in water and reacts with water to generate carbonic acid.

C using Ca(OH)2 as building material: Ca(OH)2 will harden after absorbing CO2, making the wall firm.

D. Use copper wire as conductor: The chemical properties of copper are very stable and easy to draw.

5 1. Nitrogen, phosphorus and potassium are essential elements for plant growth, so substances containing these elements can be used as fertilizers; Fertilizer containing many essential elements for plant growth is called compound fertilizer. The following substances belong to compound fertilizer is ()

A. calcium ammonium nitrate (h2po4) 2ck2co3 3dkno3

There are two factories, A and B, on both sides of a river. The industrial wastewater discharged by them contains six kinds of ions: K+, Ag+, Fe3+, Cl-, OH- and NO3. The wastewater discharged from each factory contains these three kinds, which are not repeated. As we all know, the wastewater from a factory is obviously acidic. Answer questions 52~53:

52. A factory wastewater contains three kinds of ions is ().

A. silver ions, iron ions, nitrate ions, boron ions, silver ions, iron ions and potassium ions

C.Fe3+、Cl―、NO3― D. Fe3+、NO3―、K+

53. In order to recover precious metals from factory wastewater, () can be added to it.

A.feb activated carbon C. ferrous sulfate D. nitric acid

54. The following proverb or epigram does not involve the principle of chemical reaction is ()

A. "Real gold is not afraid of fire" B. "Rome was not built in a day"

B. "Fire should be hollow, and people should be humble." D. "The older the wine, the better."

55. In the laboratory, CuSO4 5h2o is used to prepare a solution of100 ml 0.1mol/l CuSO4, and the mass of CuSO4 5h2o needs to be weighed as ().

A. 1.6 g b. 2.0 g c.01mol d. 2.5 g.

56. Sulfuric acid is highly oxidizing and corrosive to human skin and other substances, so the container containing sulfuric acid should be marked as ().

A B C D

57. The place where enzymes are synthesized in living cells is mainly ().

A. endoplasmic reticulum B. chloroplast C. ribosome D. Golgi apparatus

58. People have poor appetite when they have a fever, and its pathology is ().

A. the stomach cannot be emptied. B. Small intestine can't peristalsis

C. digestive enzyme activity is affected D. digestive glands can't secrete digestive juice

59. Fresh fish and meat will not go bad because of salting. The reason is ()

A. C 1- in brine has bactericidal effect.

B. Strong brine contains less oxygen, so bacteria can't live.

C. bacteria die due to dehydration by osmosis.

D. excessive dehydration of fish and meat cells due to osmosis.

60. According to the phenomenon of cell plasma wall separation and recovery, it can be judged that ()

A. Is the cell alive or dead B. The intensity of cell respiration

C. Number of carriers on cell membrane D. Ability of cells to absorb mineral elements

6 1. Animal and plant cells have organelles with different functions ().

A. mitochondrial b ribosome c endoplasmic reticulum d golgi apparatus

62. Phage (a virus), cyanobacteria and yeast all have the substance or structure of ().

A. Cell wall B. Cell membrane C. Mitochondria D. Nucleic acid

63. In liver cells, the most abundant compound is ().

A. Bile B. Water C. Liver glycogen D. protein

Volume 2 (indefinite multiple-choice questions ***24 points)

At least one of the four options in the following question meets the meaning of the question. This big topic * *12 is a small topic, with 2 points for each small topic and 24 points for * * *. Wrong choice, multiple choice and less choice in this question do not score.

64. The following belongs to the cultural life is ()

A.NPC representatives attend NPC meetings. B. go to the mall to buy clothes.

C. play chess with your family. Look up information on the computer

65. In the process of world multipolarization and economic globalization, China, as a developing country, is facing severe cultural development challenges. In the new situation, to enhance its cultural competitiveness, we must achieve ().

A. Vigorously develop science and technology to enhance China's comprehensive national strength.

B. Vigorously develop cultural industries

C. Inherit and carry forward excellent traditional culture

D develop education, cultivate high-quality talents and improve the quality of workers.

66. The following statement about the relationship between cultural inheritance and development is correct ()

A. Inheritance is a necessary prerequisite for development, and development is an inevitable requirement of inheritance.

B. Inheritance and development are two independent processes.

C. develop on the basis of inheritance and inherit in the process of development.

D. Cultural inheritance and development are two aspects of a process.

67. China's culture has a long history and is very inclusive, that is, seeking common ground while reserving differences and taking in everything. The positive significance of the great inclusiveness of Chinese culture lies in ()

A. it is beneficial to the national cultural exchange in harmonious relations.

B. it is conducive to enhancing the recognition of one's own culture and understanding of foreign cultures.

Make China culture always walk in the forefront of world culture and occupy the commanding heights in world culture.

D. Absorb other national cultures, so that China culture can develop further.

68. When the western countries established the bourgeois constitutional system or the * * * system, the Ming and Qing dynasties were strengthening autocracy with only one purpose-autocratic monarchy. Although there have been cabinets, the difference between Ming Dynasty cabinets and Western cabinets is ()

A. decomposition of imperial power B. the establishment of cabinet is the expression of the increase of imperial power

C. forming a cabinet is just another manifestation of authoritarian centralization. D. Adapting to China's special national conditions

69. The following statement about the success of the Revolution of 1911 is incorrect ()

A. The establishment of the bourgeois republic and the promulgation of the provisional constitution of the Republic of China are all aimed at opposing autocracy.

B. let the concept of democracy and harmony be deeply rooted in the hearts of the people.

C completed the anti-feudal task, but failed to complete the anti-imperialist task.

The elimination of feudal warlords created conditions for the development of Chinese national capitalism.

70. China's * * * production party has made arduous explorations on China's revolution and construction. The following decision is based on the correct judgment made by domestic contradictions.

A. the policy of peaceful settlement of the Xi incident B. the proposal of the general line during the transition period

C. The Eighth National Congress of communist party, China established the party's general task D. Expanding the scale of the anti-rightist struggle

7 1. Numbers (1)(2) are all related to farmers in China. What the suffering peasants want most is land. We analyzed the two pictures according to the background at that time, reflecting that the historical facts are appropriate ().

( 1) (2)

A solving the vital interests of the working people is the basic guarantee for our party to win the revolution.

B the land policy at that time was to abolish private ownership of land.

C. all this happened during the agrarian revolution.

D abolishing feudal exploitation is the common goal of the two land movements.

72. Look at the following two contour topographic maps to judge ()

A. the actual range reflected in figure a is larger than that in figure B.

B. the actual scope reflected in figure b is larger than that in figure a.

C. the slope at C.EF is greater than that at E'F'.

The gradient at D. E' F' is larger than that at EF.

73. About the mainland terrain, the correct is ().

Europe is dominated by plains and is the lowest continent in the world.

B. Central Asia is high and low, and plains are mostly distributed around the mainland.

Africa, known as the "plateau continent", is the highest continent in the world.

D. topography of north and south America: mountains in the east, plateaus in the west and plains in the middle.

74. About the surface morphological characteristics, the correct is ()

A. The terrain with flat ground or small fluctuation is plain.

B It is more than 500 meters above sea level, with mountainous terrain, undulating peaks and steep slopes.

C. the ground is undulating, but the terrain with low altitude and gentle slope is plateau.

D. the terrain is high around, low in the middle and surrounded by mountains.

75. The environmental problem caused by soil erosion in the Loess Plateau is ()

A. earthquakes and mudslides occur frequently.

B. The air pollution is serious and the climate is getting warmer.

C. the increase, expansion and deepening of river valleys lead to the decrease of cultivated land area.

D. the sediment concentration in the middle and lower reaches of the yellow river has increased greatly, which has caused certain difficulties in river regulation and flood control.

Reference answer

I. Multiple choice questions

1-5 DDCBA 6- 10 CBA ab 1 1- 14 DABC

15-20 DBBBDA 2 1-25 ACDDC 26-28 BDD

DBBC

43 A

44°C tip: displacement refers to the distance between the initial position and the final position during the movement.

45 B Tip: The falling time t = 2.9 seconds is calculated from h= 1/2gt2.

46 A

47 D

48 A tip: the value of g depends on the height and latitude of the object and has nothing to do with other factors.

49 D tip: it can be solved by using the properties of speed-time image.

50°C (graphite is used as pencil lead because of its softness, dry ice is used as rainfall because of its gasification and heat absorption, and copper is used as conductor because of its conductivity).

5 1 D

The wastewater of 52 A(A) is acidic, so OH- exists in B, but Fe3+ and Ag+ and OH- cannot exist in * * *, so Fe3+ and Ag+ exist in A, and Cl- cannot exist in Ag+* *, so Cl- exists in B, and it is impossible to have only cations or anions in a solution, so NO3―-

53 A (The precious metal in wastewater A is Ag, which is replaced by Fe)

54 B(A means that the chemical properties of gold are inactive, C reflects the conditions of full combustion, and D produces a small amount of ester after alcohol is left for a long time)

55 D (CuSO4 0.0 1mol is required, and the molar mass of CuSO4 5H2O is 250g/mol).

56°C (meaning "beware of electric shock", "beware of infection", "beware of corrosion" and "beware of poisoning" in turn)

57-63 degrees Celsius C C A D D B

Second, the indefinite multiple choice questions:

64 CD 65 ABCD 66 ACD 67 AB

68 BC 69 BC 70 BC 765438 BC+0 AD

72 AD 73 AB 74 AB 75 CD