Chapter 5 Look it up！

熊貓是人類的好朋友，人類應該保護它們，讓它們過上隨心所欲的生活。一篇關于愛因斯坦的生平介紹。albert einstein albert einstein was considered the greatest scientist of the 20th century and one of the greatest of all time. his discoveries and theories have greatly influenced science in many fields. einstein was born in 1879 in ulm, a city in germany. as a boy, he was slow to learn to talk, but later in his childhood he showed great curiosity about nature and ability to solve difficult mathematical problems. after he left school, he went to switzerland, where he graduated from the university with a degree in mathematics. in 1905, einstein began to publish a series of papers which shook the whole scientific and intellectual world, and for the theories he established in the papers he won the nobel prize for physics in 1921. because einstein was jewish, when hitler took over germany in 1933, he had to leave the country and finally settled in the united states. there he continued his study on the structure of the universe until his death in 1955. among the several important discoveries einstein made in his life, the greatest is the creation of his famous theory of relativity.一篇關于華佗的簡介。hua tuohua tuo was a famous doctor who lived 1,700 years ago during the three kingdoms period. he not only read widely but travelled extensively in his medical practice. his keen powers of observation, tireless penchant for research and ability to accurately sum up his experiences enabled him to perfect his healing art ceaselessly.like bianque* before him, he had a talent for making diagnosis by observing the patients' outward symptoms. once he found a group of people drinking in a tavern and was struck by the complexion of one of them. he went over to ask the man how he felt. the reply was that he felt quite alright, just as usual. hua warned him that he was seriously ill and that he must not drink any more. the man died soon afterwards.a versatile practitioner, he was expert in acupuncture. the discovery of jiaji, an acupoint on the spine frequently used today, is attributed to him. he wrote hua tuo's book on acupuncture, which remained one of the most authoritative works on the subject for many years after his death.one of his great contributions was the development of an oral anaesthetic for use in surgical operations. the prescription consists chiefly of datura blossoms and certain other wild poisonous herbs, all of which grow abundantly in china's southern regions. his method later spread to the arab world.