18．
The famous scientist and thinker，Charles Darwin，was born on February 12，1809．His family lived not far from the River Severn，England．Charles'father was a well-known doctor and the son of a still greater doctor and scientist．Charles'father hoped that his son would also become a doctor．
As a boy Charles liked to go for walks in the fields and forests．He watched nature and compared what he saw with everything he had read in science books．He also liked collecting very much．He collected many things：eggs，stones，and leaves．His father did not like this，as Charles was not studying very well at school．
At the age of sixteen，Darwin was sent into Edinburgh University to study in order to become a doctor．But he was interested in the history of nature．
Then he studied at Cambridge University until 1831．
Some time later，he heard that the ship Beagle was going on a trip to South America and wanted a scientist．His professor advised him to go．He said the trip would be just for Darwin．So when the ship left England in December 1831，Darwin was on it．The research lasted almost five years．The Beagle studied the waters in the sea near South America．It also visited New Zealand，Australia and islands in the Pacific．Darwin saw many new plants and animals．He collected all kinds of plants，which he sent home from the places he visited．
When he returned home，Darwin was warmly greeted by his families and many friends．
In 1842，Darwin went to live in Kent，where he continued his studies of the changes in nature．Darwin understood that plants and animals are not always the same，and that they really change．
By 1859，Darwin had finished his famous book The Origin of Species．It made a great hit in the world of science．He was opposed by the church and even by some scientists．But later，more and more scientists agreed with him．
Darwin continued his studies in science until he died in 1882．
105．根据短文内容完成句子填空（每空一词）
In the first paragraph we knowscientist andthinker Charles Darwin was born．
106．根据短文内容完成句子填空（每空一词）
From the second paragraph we know Charles Darwin enjoyed bothwalking in the fields and forests andwatching things．
107．请在文中找出下面句子的同义句，并抄写到横线上．
The church and even some scientists disagreed with him．He was opposed by the church and even by some scientists．
108．把短文中画底线的句子译为汉语他回到家时，达尔文受到了家人和朋友的热烈欢迎．
109．根据短文内容回答问题．
What's the main idea of the passage？Darwin kept studying in science all his life．．
