1. Dishuichuanshi: metaphor though power is very small, as long as perseverance, will be able to make it seems difficult to do things.
The power drop is so small, why it can drop the stones to wear it? Usually people think that this is due to the drop impact results over many years stone. As everyone knows, there is also accompanied by a chemical reaction, because the main component is calcium carbonate rock, and carbon dioxide dissolved in the rain, rain that slightly acidic. Calcium carbonate water and carbon dioxide will react to produce one kind of water soluble calcium bicarbonate to go with the flow. Over time, the place is dripping forms a depression, and even perforation.
Quartzite under the eaves on this happens often, the chemical equation is: CaCO3 + CO2 + H2OCa (HCO3) 2
Scenic stalagmites and stalactites, is composed of water containing carbon dioxide from long-term erosion.
2. gluey: describe feelings and keen devotion.
Three thousand years ago, people use animal skin, horn, bone glue to boil, plastic leather, etc., for bonding various objects, which is the first adhesive. Legend is world famous Great Wall with lime, and the like Hu rice mixed formulated adhesive, the bonded numerous stones and built. Lacquer is our specialty, is secreted from natural lacquer viscous liquid, it is the first chemical coatings.
3. fame or fortune: metaphor willingly engage in hard work or some kind of doom and gloom, though at a situation can safely tolerate.
Yee is maltose, a sugar compound using an earlier, it can get through the dry fermented malt or grain. The main energy of human life-sustaining activities from the heat generated by the oxidation of carbohydrates, sugars also can not live without seasoning.
4. harmony: metaphor or a combination of very harmonious relationship is very close.
Milk protein, fat and insoluble in water, but by plain cheese emulsifiers, dispersible in water to form an emulsion. Detergent, shampoo decontamination principles Similarly, let the emulsified water-insoluble oil dispersed in water, because of "harmony" and removed.
5. pinnacle: the metaphor of a person's skill or knowledge to the highest level.
Flame are generally red, generally because the fuel contains carbon, hydrogen two elements, incomplete combustion in insufficient oxygen, unburnt part carbon particles at high temperature glow red hot. For example, a small kerosene lamp used in the past, the flame is red, if you put a piece of paper over a kerosene flame, then, will be blackened white, black and gray that is not burning carbon. If sufficient oxygen complete combustion flame color is green, then the highest temperature reached (up to the highest level). For example, a gas stove flame.
Early time, people know that a change in temperature is determined according to the color of the combustion flame: fire at a temperature of 1200 deg.] C, the flame lit, white gradually; continues to rise after 3000 deg.] C, white-hot; if it exceeds 3000 deg.] C, flame will be from white to blue, which is the "consummate" the. This is also the maximum temperature attainable when burned.
: 6. panacea good way analogy can solve all difficult problems.
Dan agent originated in the pre-Qin period, when people with a variety of mineral raw materials carefully refining "magic bullet" to meet the ever-young aristocratic luxury. Ancient immortality some minerals, some effect at a high temperature after some of the inorganic chemical reaction, produce mainly mercury oxide, mercury chloride compound, for topical sore, dermatitis.
7. Fireworks: describe the brilliant Night decorated or large fireworks shows.
Fire tree refers fireworks, commonly known as fireworks. It consists of upper and lower two parts, with a lower emission of powder medicament Similarly, filling the upper portion of the combustion, combustion improvers, emission chromogenic agents i.e. agents. Inorganic compounds containing metal elements of the coloring agent, they are displayed in a variety of colors during combustion, chemically known as the flame reaction.
8. Ishiba shaking: describe the sound of harp, sometimes high-pitched, sometimes low, surprisingly, there is indescribable Wonderland.
Only gunpowder explosion can produce "Ishiba shaking" effect. Powder is one of four ancient invention, the basic components of gunpowder saltpeter (potassium nitrate), charcoal and sulfur, three mixed in a certain proportion heated, violent chemical reaction, a large amount of light and heat.
9. excel: metaphor future generations of students than teachers or better than their predecessors.
"Take Blue" is the world's first printing and dyeing industry, "take the blue" raw material - bluegrass is an annual herb Magnolia. Leaves under action of the enzyme hydrolysis as a colorless indoxyl, in the textile dye was oxidized to blue by the sun blue indigo compound.
10. Shalitaojin: Analogy is extremely rare or very difficult.
Gold is a rare metal, the content in the crust is only about five-sixths of about ten billion, together with the sand is deposited into a deposit, typically containing about ton of sand approximately 2g. Ancient humans are a "Shalitaojin" approach to mining gold, which uses gravity separation method, using the density differences of gold and sand, repeated washing with water, sand, scrape the little gold.
11. whitewash: likened to cover the ugly nature and whitewash dress.
Practice has proved that the proper use of cosmetics can make a person's skin smooth, white, full of beauty. Whitewash used rouge, red and blue flowers or with ancient hematoxylin, add beef marrow, such as porcine pancreatic hormone powder compressed into blocks, which is China's first daily-use chemical products. Today use a variety of cosmetics, also still pigment, binder, flavor, color and so on.
12. harm than good: analogy with the wrong solution to the current difficulties at the expense of serious consequences.
"Dove" refers to put a poisoned arsenic, arsenic is arsenic trioxide, is a virulent. Although arsenic poisoning, but taking a small amount can cure arthritis, syphilis, toothache and other diseases, this is the "fight fire with fire." In addition, the arsenic in ancient times is an effective pesticide, may become extinct rodent; arsenic can also decay and corrosion. In recent years, scientists have also found that arsenic is curative for some cancers.
13. incompatible: metaphor both opposition, not compatible.
Combustion is an oxidation reaction, a fire caused by the combustion, in general, water fighting can receive good results. This is because water is not flammable liquid, can be isolated from the air, absorb large amounts of heat, reducing the temperature of the surroundings.
14. jealousy: refers to the relationship between men and women because of jealousy, quarrel.
Vinegar is 6% -10% aqueous acetic acid solution, it is also known as acetic acid. It is commonly used in cooking condiments, enrich food color, smell, taste, and can stimulate gastric acid secretion to help digestion, appetizing disease prevention. Therefore, "by principal" is certainly not good, but the amount of "jealous" of the body is still a great benefit.
15. fan the flames: metaphor incite or encourage others to do bad things.
When the fan, the more oxygen into the drum, since the combustion of the oxygen, so that more vigorous combustion of combustibles.
16. resurgence : metaphor of people lose power again got the upper hand; also metaphor is dead things come alive again. Many with derogatory.
Combustion must have two conditions: ① and oxygen (O2) into contact; ② temperature reaches the ignition point of the fuel.
17. Tiechu needle into: analogy things to persevere necessarily good results are obtained.
Tiechu ground into the needle, but the shape of the punch changes, no new substance generated, it is a physical change, rather than a chemical change.
18. Haikushilan: describe and long time experience. Often used as a pledge, expressed firm will never change.
That dry sea waters dry up, it is a physical change; meaning rotten stone rock weathering, there is a new generation of substances belonging to chemical changes.
19. The die was cast: metaphor to a foregone conclusion, irreparable.
Wood has made the boat, but the shape of the wood has changed and no new substance is generated, is the physical change, chemical change did not happen.
20. Fire gold : metaphor Tomorrow unchanged.
Since gold is a very stable chemical properties of the metal, even under conditions of high temperature firing, it will not be oxidized by oxygen.
21. tempered into a steel: metaphor of life after a long ordeal of struggle, to become strong excellence.
The red-hot iron to air continuously repeated hammering, pig iron carbon with oxygen chemical reaction to produce carbon dioxide, reducing the carbon content, in fact, is induced by pure iron impurity continuous process, so iron it becomes a hard steel.
22. Zuanmuquhuo: create friction heat an object, the temperature rise to a burst of Mars by drilling wood.
Since when drilling wood, the wood should continue to work, so that the inner timber can be increased, temperature, when the temperature reaches the ignition point of the wood, the wood will burn.
23. Midas touch: analogy to other people's textual slightly embellished, suddenly changed.
Stone here, usually refers marble, limestone, whose main ingredient is calcium carbonate (CaCO3), gold refers to gold (Au). The law of conservation of mass, before and after the chemical reaction, the type and number of atoms of the elements are not changed. So the point is not stone into gold.
24. The drop in the bucket: metaphor force is too small or too little, can not solve the problem.
A glass of water can not lower the temperature, the temperature of combustibles is possible to reduce the ignition point, and thus it is impossible to make a vehicle extinguish burning firewood.
25. The root of the problem: the metaphor to solve the problem fundamentally.
Because combustion requires fuel, if reducing the fuel, the combustion will become difficult; if removed fuel, it is impossible for the combustion.
26. irresponsible remarks: metaphor ignore the facts and casually talk nonsense.
Orpiment, i.e., arsenic trisulfide (As2S3), is an important early arsenic compounds are found, a poorly water-soluble orange crystals, which is an ancient one feedstock for writing and drawing. Ancient people wrong word, it is crushed into powder with orpiment with water into a paste, applied on a typo, dries until overwritten.
27. slash and burn hoe: before sowing the ancients before cutting trees to burn weeds, a gray fertile field. Refers to the original farming techniques.
Potassium ash after burning 5% -12%, 5% -25% calcium, 0.5% phosphorus 3.5%, which is an efficient fertilizer, also making the soil, fertilizer earliest human use.
Title [brush] consolidation
[2020 national test Zhenti] The following description of the error associated with the idiom is:
A. "returning to their roots" of the Earth's surface because the object will be the effect of gravity
B. "Shine" is the extraction process described conventional plant dye
C. same optics "xue capsule firefly" in "capsule firefly" and "Yingxue" contains
D. "Shalitaojin" of the "gold" elemental metal belonging to
[Answer] C
Resolution:
This title examines the technological knowledge
A correct item, object by the force of attraction of the Earth's called gravity. The force of gravity center of the earth is the object, the direction of gravity is always vertically downward. Chu YeLaGuiGen means leaves hair from the root, root back after the final litter, it is due to gravity.
B entry is correct, "Green Chu in blue", the blue, indigo namely: blue, i.e., the blue dye or the like can be used as grass. Chu is extracted from green grass to blue, but the color darker than blue. Originally metaphor can improve themselves through learning, after more than a metaphor for the students than teachers or future generations than their predecessors.
C entry error, "capsule firefly" Chu from the story "capsule firefly night reading" refers to the car Yin made opaque with white silk bag filled with fireflies illuminate books continue to study at night, fireflies light principle because it parts of the light emitter, there is a phosphorus-containing chemical substances, called luciferin: "xue" story by "Sun Kang Yingxue" refers moonlight night Sunkang Li with snow on the ground reflection reading, the principle embodied in the optical the reflected light. Therefore, both the optical principles utilized inconsistent.
D entries are correct, in the form of its chemical nature of the element, the chemical stability properties of gold, do not react with oxygen and water in the soil and other substances present in elemental form in nature. Therefore, "Shalitaojin" of the "gold" elemental metal belonging.
This topic entitled Non-election, so the correct answer is C.