23.24. Ships; 25 due south. Quality; expand

Above 26.27.28. A uniform straight line; zero

29. Internal relative position 30. Have a strict track; Period and speed

3 1. The main reason for the formation of monsoon is _ _ _ _ _ _ _ _ _ _.

32. It is known that the time zone of the East Eighth District is 20:00, so the time zone of the West Tenth District is _ _ _ _ _ _ _.

33. There are 36.

A km/h car was driving on a level road and suddenly braked in an emergency with an acceleration of 25.

M/s2, ask the distance traveled by the car from the moment of braking 1s is _ _ _ _ _ meters.

34. There are _ _ _ _ _ _ and _ _ _ two kinds of nutrition in biology.

35. Green plants can be _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _.

_ _ _ _ _ _ _ _.

36. _ _ _ _ _ _ and _ _ _ _ play an important role in regulating human life activities.

37. According to the theory of biological evolution, the three evolutionary stages of the origin of life are: (1) _ _ _ _ _ _ _ _; (2)______________

; (3)____________。

38. The large digestive glands of human body are _ _ _ _ _ _ _ _ _ _ _ _ and _ _ _ _ _ _ _.

39. The basic types of _ _ _ _ _ and _ _ _ _ _ _ _.

40. According to the research of geological science, _ _ _ _ _ is the direct evidence of biological evolution in paleontology.

3 1. Thermal difference between land and sea and its seasonal variation

32.2:00 33.2 34. Self-sufficiency; rise

35. photosynthesis; Inorganic matter; Light; organic matter

36. Inorganic salts; vitamin

37. From inorganic molecules to small organic molecules; From small organic molecules to biological macromolecules; Formation of Multi-molecular System and Birth of Primitive Life

40. fossils

4 1.

43. The proportion of fresh water resources is small; Water resources are renewable natural resources; Water resources have the closest relationship with human beings.

44. use 45.

4 1. The three elements selected manually are _ _ _ _ _ _ _ _ _ _ and _ _ _ _ _. The basic argument of natural selection is _ _ _ _ _ _ _,

_ _ _ _ _ _ _ _ _ _ _ and _ _ _ _ _ _ _.

42. Every organism has a certain number of chromosomes in its somatic cells, and they all exist in the form of _ _ _ _ _ _ _ _ pairs.

43. The three basic characteristics of water resources are _ _ _ _ _ _ _ _ _ _ and _ _ _ _ _ _.

44. The characteristics of mineral resources, in addition to uneven regional distribution and limited renewable resources, are often _ _ _ _ _ _.

45. The combustible gases in the main components of semi-water gas are _ _ _ _ _ and _ _ _ _ (fill in chemical formula).

46. The way to solve the energy problem can be summed up in four words, namely, increasing sources of income and reducing expenditure. Among them, open source is _ _ _ _ _ _ _; Throttling means saving use.

Energy, pay special attention to saving _ _ _ _ _ _ _.

47. When two objects interact, if the resultant force is zero, the law of _ _ _ _ _ _ will be followed before and after the interaction; When two objects interact, if

No mechanical energy is converted into other forms of energy, then this process follows the law of _ _ _ _ _ _ _ _ _; All kinds of perpetual motion machines cannot succeed.

, this is because it violates the _ _ _ _ _ _ _ law.

48. When light strikes the interface between two media, part of it enters the other media and continues to spread. This phenomenon is called _ _ _ _ _ _ _. When light comes from

When the air shines vertically on the water surface, the direction of light propagation is _ _ _ _ _ _ _.

49. The light comes from _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _.

It is called total reflection.

50. The focal length of the retinal lens in myopia is too short, or the lens is _ _ _ _ than that in normal eyes. Select _ _ _ _ _ with appropriate focal length.

Can correct myopia.

Survival; survival of the fittest

42. Homogeneous pigments

43. The proportion of resources is small; Water resources are renewable natural resources; Water resources have the closest relationship with human beings.

44. companionship. H2； Commander (commanding officer)

46. Strengthen research on the development and utilization of new energy sources; mineral fuel

47. Conservation of momentum; Conservation of mechanical energy; conservation of energy

48. Refraction of light; keep unchanged

50. More shots

5 1. The propagation speed of sound waves in some substances changes significantly with the change of _ _ _ _ _. At room temperature, the unit is _ _ _ _ _ _

The speed of propagation is greater than that in _ _ _ _ _ _ _, even greater than that in _ _ _ _ _.

52. Put a sound source on one side of the wall, and the sound from the sound source can be heard on the other side. This is the _ _ _ _ _ _ phenomenon of sound source.

53. The frequency higher than _ _ _ _ _ _ is called ultrasonic, and the frequency lower than _ _ _ _ _ _ is called infrasound.

54. Fill in the heat transfer mode of the following phenomena: the object is heated by fire: _ _ _ _ _ _ _ _ _; A pot of cold water is boiling on the stove.

:__________; When one end of an iron bar is electrified, the other end becomes hot: _ _ _ _ _ _ _ _.

55. The longest electromagnetic length is _ _ _ _ _ _, and the shortest electromagnetic length is _ _ _ _ _.

59. Biology has a great influence on the environment. It can change the state of _ _ _ _ _ _ _ _

60. The most basic ecosystem types can be divided into three categories: _ _ _ _ _ _ _ _ _ _ _ _ _ and _ _ _ _ _ _ _.

5 1. temperature; Solid; Liquid; Air (or gas)

52. The diffraction is 53.20kHz；; 20Hz 54。 Radiation; Convection; transmit

55. Radio waves; ray

56. The temperature is 57 degrees. solar energy/power

58. Food chain 59. Atmospheric composition; water cycle

60. terrestrial ecosystems; Marine ecosystem; fresh-water ecosystem

6 1. The population of China is characterized by _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _.

62. The population problem is _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _.

63. The basic content of China's population policy is _ _ _ _ _ _ _ _ _ _.

64. The causes of soil degradation are _ _ _ _ _ and _ _ _ _.

65. The "three" in industry refers to _ _ _ _ _ _ _ _ _ _ and _ _ _ _ _.

6 1. The growth rate is fast; Large population base; The population composition is light, but the aging speed is greatly accelerated.

62. The population's pressure on resources and environment has intensified; Slow economic development and serious employment pressure; The urban population is expanding and the contradiction between urban and rural areas is intensifying;

The problem of population aging is prominent.

64. Overgrazing and over-farming; Soil salinization; Forest cutting

65. Qi; Water;

Second, multiple choice questions

4. Does not belong to a stage of the experiment is ().

A. Preparation phase B. Implementation phase

C. Result processing stage D. Proposing hypothesis stage

5. Applying the experimental method to observation has three characteristics, which are not included in the following items ().

A. the research object can be purified. B. experimental instruments can be used.

C. it can strengthen the experimental object D. it can simulate the natural process.

6. The solar atmosphere consists of three layers: the bottom layer is ().

A. light ball B. ball C. corona D. solar wind

7. The shape of the earth is exactly ().

A. spherical B. ellipsoid C. pear D. apple shape

8. There are five types of land landforms, of which the type with large surface fluctuation and absolute height greater than 500 meters is ().

A. Plateau B Plain C Mountain D Hill