Read the text and do the tasks after it.
Paper is thin material used for writing upon, printing upon or packaging, produced by the amalgamation of fibers, usually vegetable fibers composed of cellulose, which are subsequently held together by hydrogen bonding. Though the fibers are usually natural in origin, a wide variety of synthetic fibers, such as polypropylene and polyethylene, may be incorporated into paper as a way of imparting desirable physical properties. The most common source of these kinds of fibers is wood pulp from pulpwood trees, largely softwoods and hardwoods, such as spruce and aspen respectively. Other vegetable fiber materials including those of cotton, hemp, linen, and rice may be used.
The word paper comes from the Greek term for the ancient Egyptian writing material called papyrus, which was formed from beaten strips of papyrus plants. Papyrus was produced as early as 3000 BC in Egypt, and sold to ancient Greece and Rome. The establishment of the Library of Alexandria in the 3rd century BC put a drain on the supply of papyrus.
Paper is considered to be one of the Four Great Inventions of Ancient China, as the first standard papermaking process was developed in China during the early 2nd century. During the Shang and Zhou dynasties of ancient China, documents were ordinarily written on bone or bamboo, making them very heavy and awkward to transport. The light material of silk was sometimes used, but was normally too expensive to consider.
It is widely regarded that the Han Dynasty Chinese court official invented the modern method of papermaking from wood pulp in 105 AD. However, true paper without writing has been excavated in China dating to the reign of Emperor Wu of Han from the 2nd century BC. It was used for purposes of wrapping or padding for protection of delicate bronze mirrors. Although paper used for writing became widespread by the 3rd century, paper continued to be used for wrapping and other purposes.
Toilet paper was used in China by at least the 6th century AD. Toilet paper continued to be necessary in China. During the Hongwu Emperor's reign in AD 1393 the Bureau of Imperial Supplies manufactured 720,000 sheets of toilet paper for the entire court produced of the cheap rice-straw paper. For the emperor's family alone, 15,000 special sheets of paper were made, in light yellow tint and even perfumed.