Common sense accumulation: what were the earliest metals used by humans

Copper is the earliest metal used by humans. As early as prehistoric times, people began to mine open-pit copper and use the obtained copper to make weapons, utensils and other utensils, and the use of copper had a profound impact on the progress of early human civilization. In the process of the development of ancient Chinese history, copper appeared as a currency, including in today's advanced science and technology, copper is still one of the most important metals in life.

Copper is a metal found in the earth's crust and oceans. The content of copper in the earth's crust is about 0.01%, and in individual copper deposits, the content of copper can reach 3% to 5%. Most of the copper in nature exists as compounds, namely copper minerals.

Copper is a compound in the form of monovalent and bivalent metal elements, ductility and expandability, is one of the best conductors of heat and electricity, is the only metal that can produce a large number of natural products, but also exists in a variety of ores (such as brassite, chalcite, copper spotted copper, hematite and malachite), can be used in the metallic state and the form of brass, bronze and other alloys for industry, engineering and technology.

Copper can also be used to make utensils. Made of copper (utensils). Such as: Copper Ding: Copper Ding is used to cook food, and is mainly used for sacrifice and feasting, and is one of the most important ceremonial instruments in the Shang and Zhou Dynasties. Above and below there are copper pills (small balls cast in copper); copper teeth (the hook of the hook string on the crossbow is called teeth, and those made of copper are called copper teeth); copper tiles (tiles made of copper); copper history (bronze figures on copper pots that are missing carvings); copper seals (seals cast in copper). Also known as the "Bronze Chapter"),Copper Soldier (a weapon made of copper); Copper Di (a person cast in copper). That is, the "Copper Man". or "golden man"),copper washing (copper toilet utensils); copper pillars (copper pillars); copper lotus (copper candlesticks). Shaped like a lotus leaf), copper (lion-shaped incense burner made of copper), copper hun (armillary sphere made of copper). Also known as "copper instrument"); copper nose (ancient official seal on the copper nasal button hole).

Copper is closely related to human health. The human body has to consume a variety of trace elements every day, and copper is one of the metal elements that the human body cannot lack. In adults, the copper content in 1 kg body weight is about 1.4 mg to 2.1 mg; the content of copper in the blood is about 1.0 mg to 1.5 mg. Although this amount is small, it is indispensable for maintaining good health and the normal functioning of organs.

The Shang Dynasty cultural relics excavated in Henan are made of ( ) .

A.铁

B. Ceramics

C. Copper

D. Bronze

Answer: D

Houmu Pengding is houmu Peng Da Fangding, excavated in March 1939 in Anyang, Henan, is the Shang King Zu Geng or Zu Jia to sacrifice his mother Peng, is a representative work of bronze culture in the Shang and Zhou Dynasties, now in the National Museum of China. Houmu Pengding is the largest and heaviest bronze ceremonial vessel unearthed in the world so far, and enjoys the reputation of "treasure of the town and the country". Therefore, I chose D for this topic.