1. Multiple choice questions: 65438+ 0 for each question, with a total of 50 points.
1, one nanometer is one meter (c).
One in a hundred thousand, one in a million, and one in a billion.
2, (a) is a kind of ocean energy power generation, but it is the earliest development, the largest scale and the most mature technology in the utilization of ocean energy.
A tidal power generation b wave power generation c tidal power generation
3. When an object leaves the earth, it is bound to be forced in the opposite direction (upward) to accelerate its motion. When it reaches a certain speed, it will stop applying force, and it can move forward and leave the earth with inertia. When an object flies on the surface of the earth (that is, the distance is radius of the earth), its speed is (A), which is called escape speed or escape speed.
A11.2km/sec b12.2km/sec c 21.2km/sec
In early 2004, two NASA Mars probes landed successfully. Which of the following did they not include? (3)
A spirit, b opportunity, c sailor
5. The main functions of grooves on automobile tires are: (a)
A, increase the friction with the ground; B, removing rainwater and muddy water; C, increase the buffer of the car body.
6. In a room with constant temperature, you feel colder standing barefoot on tiles than on cotton, because: (b)
A, the temperature of cotton is higher; B, ceramic tiles conduct heat faster; C, physical illusion.
7. If a person weighs himself at the equator once and then goes to the North Pole under the same physical conditions, then: (b)
A equator is heavy, North Pole is light, B equator is light, and North Pole is as heavy as C.
8. Hydrogen balloons filled with gas. Let go and it will: (c)
A keeps rising, B stops rising after reaching a certain height, C keeps rising and finally explodes.
9. Incandescent lamps will turn black after being used for a long time because: (c)
A glass aging B glass discoloration C tungsten wire heated to evaporate.
Generally speaking, when the sound is below (a), the environment is quiet.
50 dB B60 dB C70 dB
1 1, the top ten environmental pollutions in the world are: (b)
A garbage pollution b air pollution c land desert pollution
12, urban noise pollution mainly comes from (a)
A transportation and industrial production b crowded and noisy c business activities
13. Which vitamins are beneficial to children's bone growth? (2)
A dimension a, b dimension d, c dimension e
14. Which of the following methods to identify the authenticity of mineral water is wrong?
A. colorless and transparent in the sun B. higher refractive index than tap water C. higher salinity than tap water.
15, which belongs to the national first-class protected animals: (d)
A. swan B. giant salamander C. peacock D. red-crowned crane
16, when the cell grows, the cell wall presents a certain (C)
A. Reversible plasticity elasticity
Sex D. rigidity
(1) (
17. How much oxygen does clean air contain? (1)
A.2 1% b 3 1% c 4 1%
18, among bees? Queen bee? And then what? Worker bees? They are: (b)
A. Female bee, male peak B. Female bee, female bee C. Male peak, male peak D. Male peak, female bee 19 What is the origin of the Olympic marathon? (2)
A. Game B. War C. Bet
20. The reasons why you can't decoct traditional Chinese medicine with boiling water are: (b)
A. Boiling water will kill the effective cells of plant Chinese medicine. B. Boiling water will coagulate starch and protein. C. Boiling water cannot be mixed with Chinese medicine.
2 1, how many days can red blood cells in human blood survive? (2)
A.B. 120 days C. 150 days
22. What should I not drink when I have a fever? (3)
A. Fruit juice B. Boiled water C. Strong tea
23. Successfully cloned mammals for the first time? Dolly? These countries are: (a)
A. Britain, the United States and Germany
24, the basic unit of organisms is: (D)
A. organ b molecule c tissue d cell
25. The pathogen of the SARS epidemic last year was: (c)
A. bacterial b, fungal c virus
26. The human genome project can be called the biological Apollo project, in which China participated in all parts of the determination: (d)
A.50% B. 20% C. 10% D. 1%
27, China's famous scientist Yuan Longping is called: (a)
A. the father of hybrid rice, the father of China rice and the father of Asian rice.
28, the main hematopoietic organs of human beings are: (b)
A. Heart B. Bone marrow C. Spinal cord D. Brain
29. The main reasons why ultraviolet rays can kill bacteria are: (a)
A. destroy the nucleic acid of bacteria B. destroy the sugar of bacteria C. destroy the lipid of bacteria
30. Father's blood type is A, and mother's blood type is AB. The blood type of the child born can't be? (3)
A，A，B，B，C，O，D，AB，3 1。 What is the theme of the 2008 Beijing Olympic Games? (2)
A peace b green c development.
32. What does the five-ring flag of the Olympic Games symbolize? (3)
A all corners of the country b grain harvest c friendship and unity of athletes from five continents
33. How long is the marathon? (2)
A 35. 129 km B 42. 129 km C 4 1. 129 km
34, the red cross sign from (c)
A cross b American flag c Swiss flag
35. Can't take pictures of the baby with a flash to protect the baby? (1)
A retina b nervous system c hair root
36. Qinshan Nuclear Power Plant is located in Haiyan County (C), China Province.
A. Jiangsu b Anhui c Zhejiang
37, the first person to set foot on the moon is (C)
A. Gagarin David Brown c Armstrong d Michael? Anderson
38. What clothes are cooler to wear in summer? (2)
A. black B. white C. brown
39, Mercedes suddenly brake, before and after the pressure on the ground is ().
A. the front wheels are bigger. B.the rear wheels are relatively large. C. the front and rear wheels are the same size.
40. Swing is to extend the swing time of the swing as much as possible. The method that can be adopted is (b)
A. When the swing swings to the highest position, people quickly squat on the board, while when the swing swings to the highest position, people quickly stand on the board. B. When the swing swings to the highest position, people quickly stand on the board, and when the swing swings to the lowest position, people quickly squat down. C. try to stay the same.
4 1. Among the seven international units, which of the following (c) is not included?
A. Candela B Ampere C Volt
42. Which of the following famous Chinese-American physicists has never won the Nobel Prize in Physics (D)?
A. Yang Zhenning, Li Zhengdao and Ding Zhaozhong Wu Jianxiong
43. A river with the same soil on both banks flows from south to north. If the east coast is seriously washed by the river, which hemisphere is the river in? (1)
A. Northern Hemisphere B. Southern Hemisphere C. It is impossible to judge
44. When was the world's first computer ENIAC successfully developed? (2)
a、 1944 B、 1945 C、 1946
45, the correct computer startup sequence is: (a)
A, turn on the monitor first, then turn on the host B, turn on the host first, then turn on the monitor C, turn on the host first or turn on the monitor first.
46, the unit of transmission rate on the Internet is _ _. (1)
A, bit/sec b, file/sec c, frame/sec d, meter/sec.
We often say that computers have both "cats" and "mice". "Mouse" refers to the mouse we use, but what does "cat" stand for? (2)
A, memory (memory) B, modem (modem) C, monitor (monitor) 48, 1898 Madame Curie discovered radioactive element (b), and through hard work, she found another radioactive element () in 1902.
A. uranium thorium b radium polonium c polonium and radium
49, electricity is (b) the secondary energy, is a kind of convenient for concentration, transmission, dispersion, control and conversion into other forms of energy.
One, one, two, three
50, in order to reduce eye fatigue, watching TV should keep a proper distance, such as 14 inch color TV should keep a distance of (c).
a， 1m b， 1.5m c，2m
2. Short answer questions: 1- 10, 65438+ 0 points for each question,114 questions, 5 points for each question, totaling 30 points.
1. What is the key to implementing the strategy of rejuvenating the country through science and education and realizing the four modernizations? A: Technology.
2. What is the meaning of sustainable development?
A: Sustainable development refers to the development that not only meets the needs of contemporary people, but also does not harm the ability of future generations to meet needs.
3. Throughout the history of human civilization, what profound changes will be triggered by every major breakthrough in science and technology?
A: Productivity.
4. Scientific and technological circles in China? San Qian? Who are these three scientists?
A: Qian Xuesen, Qian Sanqiang and Qian Weichang.
5. What's this? Cloning? ?
A:? Cloning? (Cloning) refers to asexual reproduction. It is not propagated by sexual cells, but by biological cells.
6. The leaves of plants are organs of photosynthesis. What are the basic conditions of photosynthesis?
A: Carbon dioxide, water and light.
7. What does "two bombs and one satellite" mean?
A: * * *, * * and satellites.
8. Which gas is the most abundant in the atmosphere?
A: Nitrogen.
9, in people's daily salt, if you want to lack an element, it is easy to cause endocrine disorders and goiter, commonly known as? Big neck? Gross. What is this element? A: Iodine.
10. What is the condensed dry ice made of?
A: Carbon dioxide.
1 1, Liu Xin wore a new pair of elastic pants, and in less than a day, there was no dust on them. After returning home, her mother criticized her for not paying attention to keeping clean and hygienic. Liu Xin said unconvinced. What sticks to your pants is dust. You can't hide ? Mother became even more angry and thought that Liu Xin was lying. Did Liu Xin lie or not?
Answer: No, stretch pants belong to chemical fiber fabrics. When they are worn, they will generate static electricity and adsorb dust.
12, white woven lamp, fluorescent lamp, high-pressure sodium lamp, neon lamp, which one has no filament? What kind of lamp emits light directly from the filament?
Answer: neon lamps have no filament, and incandescent lamps emit light directly by filament.
13. There is a diamond and a glass imitation with the same shape and volume. Can you tell them apart with the naked eye? Try to explain why.
A: Yes. Diamonds can refract natural light, so we can see the rainbow effect by observing diamonds, but ordinary glass does not have this effect.
14. Why is red used as the color of hazard report?
A: The red light source has the longest light wave, the strongest penetration and the farthest propagation under the same weather conditions.