痔瘡痛 相關
廣告院址：深圳市羅湖口岸的羅湖1號大廈，春風路3033號，出羅湖口岸步行百米即到. 深圳人民醫院主任親診，快速解決內痔、外痔、混合痔問題；當天預約當天手術，無需住院
搜尋結果
2024年3月30日 · gastrointestinal tract, pathway by which food enters the body and solid wastes are expelled. The gastrointestinal tract includes the mouth, pharynx, esophagus, stomach, small intestine, large intestine, and anus. See digestion. The Editors of Encyclopaedia Britannica This article was most recently revised and updated by Adam Augustyn.
- The Editors of Encyclopaedia Britannica
- Overview
- Speculation and excavation
- Stages of Stonehenge
It is not clear who built Stonehenge. The site on Salisbury Plain in England has been used for ceremonial purposes and modified by many different groups of people at different times. Archaeological evidence suggests that the first modification of the site was made by early Mesolithic hunter-gatherers. DNA analysis of bodies buried near Stonehenge suggests that some of its builders may have come from places outside of England, such as Wales or the Mediterranean.
When was Stonehenge built?
The monument called Stonehenge was built in six stages between 3000 and 1520 BCE. The site was used for ceremonial purposes beginning about 8000–7000 BCE.
What is Stonehenge made of?
Stonehenge is constructed from sarsen stones, a type of silicified sandstone found in England, and bluestones, a dolomite variation extracted from western Wales.
What was Stonehenge used for?
Stonehenge has long been the subject of historical speculation, and ideas about the meaning and significance of the structure continued to develop in the 21st century. English antiquarian John Aubrey in the 17th century and his compatriot archaeologist William Stukeley in the 18th century both believed the structure to be a Druid temple. This idea has been rejected by more-recent scholars, however, as Stonehenge is now understood to have predated by some 2,000 years the Druids recorded by Julius Caesar.
In 1963 American astronomer Gerald Hawkins proposed that Stonehenge had been constructed as a “computer” to predict lunar and solar eclipses; other scientists also attributed astronomical capabilities to the monument. Most of these speculations, too, have been rejected by experts. In 1973 English archaeologist Colin Renfrew hypothesized that Stonehenge was the centre of a confederation of Bronze Age chiefdoms. Other archaeologists, however, have since come to view this part of Salisbury Plain as a point of intersection between adjacent prehistoric territories, serving as a seasonal gathering place during the 4th and 3rd millennia bce for groups living in the lowlands to the east and west. In 1998 Malagasy archaeologist Ramilisonina proposed that Stonehenge was built as a monument to the ancestral dead, the permanence of its stones representing the eternal afterlife.
Britannica Quiz
A Quiz About Walls and More
In 2008 British archaeologists Tim Darvill and Geoffrey Wainwright suggested—on the basis of the Amesbury Archer, an Early Bronze Age skeleton with a knee injury, excavated 3 miles (5 km) from Stonehenge—that Stonehenge was used in prehistory as a place of healing. However, analysis of human remains from around and within the monument shows no difference from other parts of Britain in terms of the population’s health.
The Stonehenge that is visible today is incomplete, many of its original sarsens and bluestones having been broken up and taken away, probably during Britain’s Roman and medieval periods. The ground within the monument also has been severely disturbed, not only by the removal of the stones but also by digging—to various degrees and ends—since the 16th century, when historian and antiquarian William Camden noted that “ashes and pieces of burnt bone” were found. A large, deep hole was dug within the stone circle in 1620 by George Villiers, 1st duke of Buckingham, who was looking for treasure. A century later William Stukeley surveyed Stonehenge and its surrounding monuments, but it was not until 1874–77 that Flinders Petrie made the first accurate plan of the stones. In 1877 Charles Darwin dug two holes in Stonehenge to investigate the earth-moving capabilities of earthworms. The first proper archaeological excavation was conducted in 1901 by William Gowland.
Stonehenge was built within an area that was already special to Mesolithic and Neolithic people. About 8000–7000 bce, early Mesolithic hunter-gatherers dug pits and erected pine posts within 650 feet (200 metres) of Stonehenge’s future location. It was unusual for prehistoric hunter-gatherers to build monuments, and there are no comparable structur...
5 天前 · heart, organ that serves as a pump to circulate the blood.It may be a straight tube, as in spiders and annelid worms, or a somewhat more elaborate structure with one or more receiving chambers (atria) and a main pumping chamber (ventricle), as in mollusks. In fishes the heart is a folded tube, with three or four enlarged areas that correspond to the chambers in the mammalian heart.
4 Oliver and Richard Cromwell served as lords protector of England, Scotland, and Ireland during the republican Commonwealth. 5 William and Mary, as husband and wife, reigned jointly until Mary's death in 1694. William then reigned alone until his own death in 1702. 6 George IV was regent from February 5, 1811.
2024年5月7日 · Athena, in Greek religion, the city protectress, goddess of war, handicraft, and practical reason, identified by the Romans with Minerva. She was essentially urban and civilized, the antithesis in many respects of Artemis, goddess of the outdoors. Athena was probably a pre-Hellenic goddess and was later taken over by the Greeks.
2 天前 · Titanic, British luxury passenger liner that sank on April 14–15, 1912, during its maiden voyage, en route to New York City from Southampton, England, killing about 1,500 people. One of the most famous tragedies in modern history, it inspired numerous works of art and has been the subject of much scholarship.
2024年5月6日 · Hinduism, major world religion originating on the Indian subcontinent and comprising several and varied systems of philosophy, belief, and ritual. Although the name Hinduism is relatively new, having been coined by British writers in the first decades of the 19th century, it refers to a rich cumulative tradition of texts and practices, some of ...
