Charles Darwin was a scientist．And he changed our understanding of the （56）　　（自然的） world．

Darwin was born in 1809 in England．At school he didn't do well and got poor marks．He was a good athlete though and loved studying nature．He also kept doing chemisty （57）　　（实验）．

His father was a doctor and expected Charles to become one too．Charles started studying （58）　__　 （医药） at Edinburgh University，but soon gave up his studies there．He went on to study relion at Cambridge University （59）　　 （代替）．

In1831，Darwin went on a five﹣year journey to South America，Australia and South Africa by ship．He was seasick，but the things he saw on this trip changed his life．He （60）　　 （收集） many animal andplant speaimens．He spent the （61）　　 （剩余） of his life studying what he had seen and he wrote many books．

In 1939，Darwin （62）　　 （结婚） his cousin，Emma Wedgwood，with whom he had seen and ten children!He was a loving father and enjoyed family life，which was always more（63）　　 （重要的） to him than his research．In spite of having many health （64）　　 （问题） throughout his life，Darwin lived until he was 73．

Darwin‘s most famous book‎‏‎"On the Origin of Species" came out in 1859and sold out in a day．It said that all living things were related．His ideas were not popular at first，but now most people （65）　　 （同意） with them and admire Darwin as great scientist．