Who was the first Olympic champion in China? (Xu Haifeng)
Who invented glasses? (Luigi, bacon)
Why does the bicycle move? (Bicycle tires rub against the ground)
Whose title is the following? (Poet Fairy-Li Bai, Poet Sage-Du Fu, Shi Gui-Li He Landscape Poet-Meng Haoran, Pastoral Poet-Tao Yuanming)
What does the light of June revolve around? How long is a cycle? (Earth) (24 hours)
What are the three plains in China? (Northeast Plain, North China Plain, Middle and Lower Yangtze Plain)
How many earthquakes occur on the earth every year? (about 5 million times)
What is the smallest and coldest star? (Pluto)
10 What is the thickness of the earth? (atmosphere)
Responder: ○ Lace ○-Magic Apprentice Level 1 1 1-8 18:36
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What abiotic factors are related to the following phenomena: Do dogs, sheep and other animals need to change their hair in summer? sunlight
What type of printer is fast and high resolution? Laser type
What is the driving force of the world weather? sun
Suppose you boil a pot of water on a spaceship, how long will it take? Will not boil
Glucose, right? white crystal
What principles are commonly used in gardening to prune fruit trees? Apical dominance
What is the deep hole under the top of the front teeth, the teeth used to judge the age of horses? Dental sulcus
How did humans realize the close observation of the sun? Skylab, a large manned space station launched by USA 1973.
What abiotic factors are related to the following phenomena: When the water temperature drops to 8 degrees, sardines will gather to the shore? temperature
The earliest quasars were discovered in 1960? 3C48
1 light year is about? 9.46 trillion kilometers
Regarding the rotation of the earth, it is incorrect to think that the rotation of the earth refers to the movement of the earth around the center of the earth.
What does ascaris have to do with living in the human body? Parasitic disease
The following artificial vegetative propagation does not belong to plants: stem division
Who invented the first telescope? "Galileo"
Vegetative reproduction of plants is the way for vegetative organs of plants to produce new individuals. For example, strawberries propagate through stolons.
Which comet caused the Leonid meteor shower? Comet Temple Tuttle
What abiotic factors are related to the following phenomena: pine, cypress, etc. It does not grow well in the dark. sunlight
The first thing robert hooke saw under the microscope was the cell wall of cork cells.
The earliest thermometer was the air thermometer.
A lens whose center is thicker than its edge is called a convex lens.
The following are not monosaccharides: maltose.
Snake venom as a drug does not have which of the following functions? anesthetize
Which of the following ecosystems is the easiest to maintain ecological balance? tropical rainforest
China has promulgated four laws and regulations on software copyright protection, the latest of which is the Computer Software Copyright Registration Law.
Which animal has the largest brain? sperm whale
The thicker the fuse, the greater the fusing current.
Life span of European herring living in Caspian Sea and Black Sea: over 100 years.
A lens with a thicker edge than the center is called a concave lens.
Among the following diseases, those that are not infectious diseases are: coronary heart disease.
The following are not immune system diseases: albinism.
Do fish have ears? have
The earliest quasars were found in 1960: 3C48.
What is the main composition of natural gas? methane
The moon sometimes looks like a crescent moon, and the moon outside the crescent moon has a slight light. Astronomers call this phenomenon "gray light". What does gray light mean? The earth reflects sunlight to the moon.
Someone bought stocks last year, which fell by 20% that year. How much should it go up this year to keep the original value? 25%
The characteristics of the second division in the process of germ cell formation are that the centromere is divided into two parts.
Two creatures live together and depend on each other. Once separated, one or both of them will die. The relationship between these two creatures is called fate.
1 light-year is about 946 billion kilometers.
What abiotic factors are related to the following phenomenon: sardines will gather on the shore when the water temperature drops to 8 degrees. temperature
The following is the URL of a homepage, which conforms to the URL format: http://www.the9.com.
Make a cuboid hole in the center of two sides of a cube and a cylindrical hole in the center of the upper and lower sides. It is known that the side length of a cube is 10 cm, the holes on the side are squares with a side length of 4 cm, and the holes on the upper and lower sides are circles with a diameter of 4 cm. Find the volume of this solid: 668.64 cubic centimeters.
The main form of wind energy utilization is wind power generation.
How many bytes does the internal code of a Chinese character account for in the microcomputer Chinese character system? 2
The largest calorific value of coal is anthracite.
In the grass-rabbit-wolf-tiger food chain, tigers belong to the third category of consumers.
What abiotic factors are related to the following phenomena: dogs, sheep and other animals need to change their hair in summer. sunlight
1970, Dr. Hawking realized and successfully proved the black hole boundary theorem.
Penicillin was invented in 1928.
Solid carbon dioxide is usually called dry ice. What does it do? artificial rainfall
If a person's sciatic nerve is alive and the spinal cord is damaged, then this person is: feeling, but unable to move (paralysis).
If you want to send files to people who don't have an FTP server, the best way is to use email.
The characteristics of the second division in the process of germ cell formation are that the centromere is divided into two parts.
In acute inflammation, people will find leukocytosis, which belongs to nonspecific immunity from the perspective of immunity.
Animals that want to sleep in summer are: sea cucumber.
That is, conventional energy: hydropower.
Why should the light be controlled in the silk exhibition room of ancient paintings? Reduce ultraviolet damage
Whales can be roughly divided into baleen whales and toothed whales. Which of the following does not belong to baleen whales? sperm whale
The following are parasitic plants: dodder.
Computer hardware can only be directly executed: machine language.
In the following description of computer virus, the correct description is that computer virus is latent, it may lurk for a long time, and only when certain conditions are met will destructive activities begin.
The final product of complete digestion of lard in digestive tract is glycerol.
Which of the following insects will do harm to the growth of green vegetables? snail
Two creatures that can live independently, live together and depend on each other, are they beneficial to each other, or are they beneficial to one side and harmless to the other? This relationship with life is called * * * habitat.
The embryonic development of all higher organisms begins with a fertilized egg, which shows that higher organisms originated from what organisms? monad
Theoretically, a black hole cannot be less than: 10 minus 3 1 m3.
What substance in water forms oil under high pressure? Microbial debris
In the carbon cycle of ecosystem, the process of releasing carbon dioxide into the atmosphere is breathing.
Why do fireflies glow? Because there are luminous cells in the body.
Mosquitoes are one of the four pests and can spread various diseases. Which of the following diseases will not be transmitted by mosquitoes? rabies
Some insects go through four periods in their life, namely, eggs → larvae → pupae → adults. It's called complete transformation. Which of the following insects is completely abnormal? silkworm
Which of the following statements is false? Constant temperature can improve the hatching rate of bird eggs.
After people are punctured by rusty nails, tetanus can be avoided by injecting tetanus antitoxin. This kind of immunity belongs to artificial immunity.
The growth cycle of eyebrows is about two months.
The "sugar" suitable for diabetics is xylitol.
Einstein is famous for his theory of relativity.
White people (white people) generally have a high nose. Why? So that the cold air is preheated in the nasal cavity before entering the trachea.
If you want to print mimeographed postcards, you can print the front of one and the back of the other at the same time. So how many times do you have to print three postcards now to finish it? 3 times
Among the freshwater dolphins in the world, the number is the least: Baiji dolphin.
How long is the giant salamander? 1 m
What shape is a pig's tail when it is in a good mood? Horizontal swing
When is World Water Day? March 23
Among the following metals, magnesium is the most active.
The development of higher animal embryos means that fertilized eggs develop into larvae.
Nitrous oxide is used as an anesthetic in the medical field.
Diamond consists of the same elements as graphite.
The biggest angle of view among animals is: fish.
Bioengineering mainly does not include: soil engineering.
The element with the least content in the earth's crust is astatine.
What do bats rely on to tell directions and feed? sound
What fish will die after spawning? Salmon/dog salmon
At present, what stage is the electronic computer in? The Age of Large Scale and Very Large Scale Integrated Circuits
The only bird in the world that hunts by smell is kiwi.
What does shrimp breathe? gill
When was the first genetic code translated? 196 1
Where can I know the age of a horse? tooth
What are the two elements of water molecules? Hydrogen, oxygen
Among vertebrates, what animal can be regarded as a real terrestrial animal? reptile
The symbol of two nitrogen atoms is 2N.
Which country built the earliest subway? Britain, England
The water pollution of the Yellow River has worsened the ecological environment and lost the biodiversity of the biological population. Do you know how many kinds of fish are there in the Yellow River? 150 species
Causes of fin degeneration of baiji dolphin: forelimbs.
The most advanced reptile is the crocodile.
Which of the following vitamins can be converted into calcium in the sun? cypridopathy
The opening of the Silk Road can be traced back to the Western Han Dynasty.
The following are not grasses: cotton.
The control center of amoeba is the nucleus.
Are the giant panda and the little panda a family? breakdown
The largest egg among living birds is an ostrich.
Wolverine is only found in China: Daxinganling Forest.
Which constellation is Polaris in? Ursa Minor
Sponge is an animal.
The cell structure that can only be observed under the electron microscope is called submicroscopic structure.
The function of catalyst in chemical reaction is to change the speed of chemical reaction.
The earth has perihelion and apohelion, and the earth is at perihelion in winter in our northern hemisphere.
Among the following statements about phosphorus, red phosphorus is non-toxic and white phosphorus is highly toxic.
The farmer had 65,438+07 sheep, and all but nine died of illness. How many sheep does the farmer have left? nine
What are the main forms of nitrogen on the earth? nitrogen (N)
Can mercuric chloride be used with iodine? No, there will be toxic substances.
The biggest muscle in human body is gluteus muscle.
Which of the following fish is viviparous? shark
Why are there no live hairtail for sale in the market? Hairtail died immediately after being caught because of the great change of air pressure.
Sika deer: Artiodactyla
Which of the following fruits are nuts? chestnut
Which animal has the longest life span in the world? turtle
Why are the eyes of white rabbits red? This is the color of blood.
What do pangolins prey on? tongue
What does baiji detect and identify in water? Hearing (sonar)
How many cervical vertebrae does a giraffe have? (Hint: The cervical vertebra of the mouse is 7) 7.
If you look at the starry sky for a long time, which city has the largest number of constellations? Guangzhou
The geneticist Mendel is a priest.
Pluto is the outermost of the nine planets in the solar system.
Cattle eat which of the following things will be poisoned? Rotten sweet potato
What family is the panda? felid
The metal with the highest melting point in the world is tungsten.
The following is a special product of our country: persimmon.
At present, interferon is used to treat viruses.
Which of the following does not belong to seed plants? cryptogam
The following are seed plants: willow.
Which country is Einstein a scientist? United States of America
Where is the same sex in the air and where people feel loudest? ground
AgCl is a substance that is insoluble in neither water nor nitric acid.
The largest amount of air is nitrogen.
What kind of fruit does pineapple belong to? Compound fruit
1869 In March, which scientist officially announced the periodic law of elements? Mendeleev
What animal is the polar off-road vehicle designed and manufactured to imitate walking? penguin
The moonlight we see is: the moon reflects sunlight.
The "spicy" that people feel is a comprehensive feeling of heat and pain.
The evolution of ferns relative to bryophytes is based on the existence of vascular tissues.
Which of the following is not a fat-soluble vitamin: vitamin B.
The official name of HTML is Hypertext Markup Language.
What are the eyes of frogs when they swallow food? Close your eyes.
The following are not homologous organs: human hand and bat wing hand.
In what season do chrysanthemums usually bloom? autumn
What kind of fruit does Ginkgo belong to? nut
Nauru, the smallest island country, is located in Oceania.
Which of the following substances will destroy the ozone layer? Dichlorodifluoromethane
Which of the following aquatic organisms belongs to fish? Japanese hippocampus
Kelp is: seaweed, brown algae
At present, the hardest of all minerals is diamond.
Which of the following countries has no agriculture? Monaco
What family is a lynx? Cat.
The monitor lizard is a first-class protected animal in China.
Who is the champion of high jump among animals? American mountain lion
The smallest planet in the outermost layer of the solar system is Pluto.
In our country, the animal called "six unlike" is pronghorn.
What is the main cause of acid rain? sulphur dioxide
It takes 20 seconds for blood to circulate in the human body once a week.
The image of an object on the retina through the eyes is an inverted real image.
Carbon monoxide burns in the air and gives off a blue flame.
At present, the function of appendix in human body is considered as a part of immune system.
Polaris in the sky: Ursa minor.
The monitor lizard is a first-class protected animal in China.
The highest Achnatherum splendens in Inner Mongolia grassland can reach 2 meters.
Among the following gases, carbon monoxide is very toxic.
How many provinces does the Yellow River flow through? 9.
The basic skeleton of cell membrane is phospholipid bilayer.
Are apples and roses the same family? Yes, Rosaceae
The smallest bird is a hummingbird.
At about -2 18℃ (55k), it becomes a snowflake-like solid with a light blue color.
The earth will not collide with other planets in the solar system. What is the reason? The gravitational action of the sun
What color is the top of the rainbow? red
Immerse the head of a live locust in water 10 minute (other parts of the body are exposed to the air). Will locusts die? cannot
Which of the following countries drives on the left? Japan
Excuse me, 3599 is: composite number
What is the percentage of water in human body? 60%
Which is lighter, one kilogram of iron or one kilogram of cotton? Same weight
Is synthetic fiber blended fabric easy to pilling? be
Whales are often called mammals.
The ocean accounts for 7 1% of the earth's surface area.
The platypus's temperature is unstable.
Which vitamin has antioxidant and anti-aging effects? E
The world's first test-tube baby was born in 1978.
Oil is called "black gold". Is this correct? correct
The weight of wood and iron in vacuum is 1 ton, which is heavier in air? log
The wind on the earth cannot flow in a straight line because of (), and the earth rotates.
Generally, the method used to remove insoluble solid substances in liquid is filtration.
What is the purpose of human knee jerk reflex test? Vegetative nerve
Who is the champion of high jump among animals? American mountain lion
Which chicken breed in China is listed in the World Excellent Chicken Atlas? Langshan chicken
Are Buxus macrophylla and Buxus microphylla the same tree? breakdown
The English word for clone is: clone.
Is baiji's eyesight good? No, it's degraded.
The hardest mineral in nature is diamond.
The following are not homologous organs: human hand and bat wing hand.
Oxygen turns into liquid at about-183℃ (90K), and its color is light blue.
People see the continuous pictures of movies because of the phenomenon of visual persistence.
The geneticist Mendel is a priest.
The "natural selection" in the Origin of Species is also called: survival of the fittest.
The only bird that can fly back and forth, left and right is the hummingbird.
The spawning season of giant salamander is: late summer.
Cattle eat which of the following things will be poisoned? Rotten sweet potato
The virus of mad cow disease is considered as one kind: protein (prion).
The peacock that opens the screen is: male peacock.
The position of green plants in the ecosystem is: producer.
The biggest muscle in human body is gluteus muscle.
What part of the plant is "day lily"? flower
Where is the same sex in the air and where people feel loudest? ground
What is called "the country of a thousand islands"? Indonesia
AgCl is a substance that is insoluble in neither water nor nitric acid.
Dolphins are: mammals
Dolphins are: () mammals
What color is the black hole? No color
Are dinosaurs cold-blooded (warm-blooded) or warm-blooded (warm-blooded)? There is no conclusion yet.
Which vitamin can promote the absorption of calcium: vitamin D.
In our country, the animal called "six unlike" is pronghorn.
What animal is the polar off-road vehicle designed and manufactured to imitate walking? penguin
The longest giraffe in the world has a neck of about 6 meters.
Which of the following English words stands for e-mail?
The mass-energy equation was put forward by Einstein.
What kind of fruit does kiwifruit belong to? berry; bacca
Why do chickens eat pebbles? Help digestion
The following do not belong to birds: bats.
Heavy metals are toxic to human body, which of the following is not: sodium (Na)
San Marino is called "a country within a country". Which country surrounds its territory? Italy
The largest lymphatic organ in the human body is the spleen.
The position of herbivores (herbivores) in the ecosystem is: primary consumers
How many carbon isotopes are known? 12 species
What is the sweetest part of the apple? top
The pH value of rainfall is less than 5.6, and this kind of rain is acidic.
What are the eyes of frogs when they swallow food? Close your eyes.
What's the name of mosquito larvae? wiggler
The following is a special product of our country: persimmon.
Which of the following is not the result of volcanic eruption warming the climate?
Seen from the northern hemisphere, the crescent moon with its bright side on the left is called the waning moon.
How many penguins usually lay eggs at a time? two
The life habit of a lazy monkey is to lie down during the day and go out at night.
Carbon monoxide burns in the air and gives off a blue flame.
The image of an object on the retina through the eyes is an inverted real image.
Farmers often use black lights to trap LEPIDOPTERA insects at night, which takes advantage of the pressure of insects.
Sika deer is a first-class protected animal in China.
The famous Miller experiment proved that it is possible to synthesize amino acids in the primitive earth environment.
The description of myopia glasses is correct: concave lens.
Carnations are the same as carnations.
How old is the earth? 5-6 billion years
What does baiji detect and identify in water? Hearing (sonar)
Among the following substances, the oxyacid is sulfuric acid.
When you catch a butterfly, you will leave colorful "powder" on its wings. This "powder" is actually: tiny scales.
Which vitamin can promote the absorption of calcium: vitamin D.
The following metals cannot react with acids: copper and dilute sulfuric acid.