In 2007, the national unified entrance examination for colleges and universities was held.

Scientific comprehensive ability test

This volume *** 13 pages, out of 300 points, the examination time 150 minutes.

★ Good luck with the exam ★

Precautions:

1. Before answering questions, candidates must fill in their own names and admission ticket numbers on the test papers and answer sheets, and paste the bar code of the admission ticket number on the specified position on the answer sheet.

2. After choosing the answer for each multiple-choice question, use 2B pencil to black the answer label of the corresponding question on the answer sheet. If you need to change it, clean it with an eraser, and then choose another answer label. The answer on the test paper is invalid.

3. Non-multiple choice questions, write directly in the answer area corresponding to each question on the answer sheet with a 0.5mm black ink pen or black ink pen, and the answers on the test paper are invalid.

Please hand in this paper together with the answer sheet after the exam.

Multiple choice questions (***2 1 question, 6 points for each question, *** 126 points)

You can refer to the following data when answering questions:

Relative atomic mass (atomic weight): h1c12o16ne20.

Copper 64

1. Multiple choice questions (this question13 * *) Only one of the four options given in each question meets the requirements of the topic. )

1. The following figure shows the conduction direction of local current and nerve excitement when stimulating and exciting the S point of isolated nerve fibers (curved arrows indicate the flow direction of local current inside and outside the membrane, and straight arrows indicate the conduction direction of excitement). The correct answer is

2. When the pathogen infects the human body and invades the cells, the human body will have an immune response to the cells, including

A. effector b cells contact the target cells and lyse, thus eliminating the pathogen antigen interleukin.

B. The effector B cells contact the target cells, which leads to the lysis of the target cells, so that the pathogen antigen is destroyed by antibodies.

C. effector t cells contact the target cells, which leads to the lysis of the target cells and the destruction of pathogen antigens by exotoxins.

D. effector t cells contact the target cells, which leads to the lysis of the target cells, so that the pathogen antigen is destroyed by antibodies.

3. The following statement about S-shaped curve of population growth is wrong.

A usually, the natural population growth curve is ultimately s-shaped.

B. when the value of k is reached, the population growth rate is zero.

C. population growth is affected by its own density.

D. the population growth rate is gradually decreasing.

4. Corynebacterium glutamicum is commonly used in production from fermentation to large-scale production of glutamic acid. In the following description of glutamic acid fermentation process, it is correct that

A. When dissolved oxygen is sufficient, lactic acid accumulates in the fermentation broth.

B the change of the ratio of carbon source to nitrogen source in the fermentation broth does not affect the yield of glutamic acid.

C. the excretion of glutamic acid by bacteria is beneficial to the synthesis of glutamic acid and the improvement of yield.

D when the pH of the fermentation broth is alkaline, it is beneficial for Corynebacterium glutamicum to produce acetyl glutamine.

5. The figure below shows the intracellular secretory protein labeled with 3H- leucine, tracking the distribution and transport process of radioactive secretory protein particles in cells at different times. The correct answer is

6. The following statements about environmental problems are correct.

A. When burning coal, adding appropriate amount of limestone can reduce the amount of SO2 in waste gas.

B Air with ozone volume fraction over 10-4% is beneficial to human health.

C. Precipitation with a pH between 5.6 and 7.0 is usually called acid rain.

D phosphorus-containing synthetic detergent is easily decomposed by bacteria, so it will not cause water pollution.

7. At room temperature, the pH value of the following mixed solutions must be less than 7.

A. What is the mixture of hydrochloric acid with A.pH = 3 and ammonia with pH= 1 1?

B. hydrochloric acid with B.pH = 3 and barium hydroxide solution with pH= 1 1 are mixed in equal volume.

C. Acetic acid with C.pH = 3 and barium hydroxide solution with pH= 1 1 are mixed in equal volume.

D, mixing sulfuric acid with pH = 3 and ammonia with pH= 1 1 in equal volume.

8. When the copper sulfate solution is electrolyzed with an inert electrode, if the amount of gas generated on the anode is 0.0 100 mol, the mass of copper precipitated on the anode is

A.0.64 B.1.28g C.2.56 D.5. 12g

9. In three closed containers, Ne, H2 and O2 are respectively filled. When their temperatures and densities are the same, the pressures (P) of these three gases are arranged as follows in descending order.

(A)p(Ne)>p(H2)>p(O2) (B)p(O2)>p(Ne)>p(H2)

(C)H2 >； P(O2)>p(Ne) (D) p(H2)>p(Ne) > oxygen.

10. Known oxygen reduction reaction

2Cu(IO3)2+24KI+ 12h2so 4 = 2Cu i4+ 13i 2+ 12k2so 4+ 12H2O

Among them, the electrons obtained by 1mol oxidant in the reaction are

(A) 10 mol (b)10 mol (C) 12 mol (D) 13 mol.

The quantity of the following compounds is 1 1. Under the corresponding conditions, the most oxygen can be obtained after complete decomposition.

(A)KClO3 (adding MnO2 catalyst and heating) (B)KMnO4 heating.

(C)H2O2 (aqueous solution containing MnO2 catalyst) (D)HgO (heating)

12. An organic compound consists of only three elements: carbon, hydrogen and oxygen, and its relative molecular weight is less than 150. If the mass fraction of oxygen is known to be 50%, the maximum number of carbon atoms in the molecule is

a4 b . 5 c . 6d . 7

13. The right figure is a schematic diagram of the reaction rate of a chemical reaction changing with the reaction time at constant temperature. The following statement does not apply to the schematic diagram.

A. When the reaction reaches equilibrium, the positive reaction rate and the reverse reaction rate are equal.

B, after the reaction reaches the equilibrium state I, the reactant concentration increases, and the equilibrium movement reaches the equilibrium state II.

C, after the reaction reaches the equilibrium state I, the reactant concentration decreases and the equilibrium moves to the equilibrium state II.

In equilibrium I and equilibrium II, the concentrations of the same reactant are not equal.

Second, multiple-choice questions (this question ***8 small questions, each small question gives four options, some have only one correct option, some have multiple correct options, all get 6 points, choose the right but incomplete 3 points, choose the wrong 0 points)

14. It is reported that the first "livable" planet was recently discovered outside the solar system, and its mass is about 6.4 times that of the Earth. A person who weighs 600 N on the surface of the earth will weigh 960 N on the surface of this planet, from which it can be inferred that the ratio of the radius of this planet to the radius of the earth is about.

A.0.5 B2C.3.2 D.4

15. A series of simple shear waves propagate along the negative direction of the X axis, with the wave velocity v = 4 m/s. The vibration image of the particle at the known coordinate origin (x=0) is shown in Figure A, and t=0. 15 can be correctly expressed in the following four figures.

16. As shown in the figure, a piston with a mass of m seals a certain mass of gas in the cylinder, and there is no friction between the piston and the cylinder. State A is the gas equilibrium state when the gas cylinder is placed in the ice-water mixture, and State B is the state when the gas cylinder is taken out of the container at room temperature.

(27℃) In the process of gas changing from state A to state B, the atmospheric pressure remains unchanged. If the heat energy between gas molecules is ignored, the following statement is correct.

A. compared with state b, gas molecules in state a hit the piston more times per unit time.

B. compared with state a, the gas molecules in state b have lower impulse to the piston per unit time.

C, at the same time, the gas molecules in state A and state B have the same impulse to the piston.

D. from state a to state b, the internal energy of the gas increases, the outside does work on the gas, and the gas releases heat to the outside.

17. Seen from the desktop, there is an inverted glass cone whose vertex just touches the desktop. The axis of the cone (dotted line in the figure) is perpendicular to the desktop, and the section passing through the axis is an equilateral triangle. As shown in the figure, a beam of cylindrical parallel light with radius r is vertically incident on the bottom surface of the cone, and the central axis of the beam coincides with the axis of the cone. Suppose the refractive index of glass is 1.5, and the radius of the spot formed by the light beam on the desktop is

a . r . b . 1.5r c . 2r d . 2.5r

18. As shown in the figure, there is an object with a mass of ××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××

It is known that the velocity of this object is zero when t = 0. If the speed of the object at the end of 3 seconds under the action of the above four forces is respectively expressed, the maximum of these four speeds is

A.B. C. D。

19. A large number of ground hydrogen atoms were bombarded by a large number of electrons with certain energy, and a certain number of spectral lines were observed. When the energy of electrons increases, it is found that the number of spectral lines increases by five. An represents the difference of the quantum number n of the highest excited state in the two observations, and e represents the energy of the electron after height adjustment. Judging from the energy level diagram of hydrogen atom, the possible values of △n and E are

A.△n= 1， 13.22cV