题目内容：
根据材料，回答题{MP3:http://wximg.233.com/attached/media/20131228/20131228155995969596.mp3}
Introduction to English Synonyms
L．The reason for the ( 1 )_of English language
By constantly incorporating words from other languages through centuries
Ⅱ． The gradual incorporation of English words
1) Before． 1066: Anglo-Saxon words
2)Alter 1066: words were borrowed from French, connected with food, clothing,law,(2)_and organization, etc．
3) In the Renaissance: a great influx of words of (3)_origin
4) In modem times: the vocabulary were expanded by people's (4)__
5) (5)-vastly added to English vocabulary, e．g． jeep, railroad, fall, gasoline etc．
Ⅲ． Different kinds of synonyms
1) synonyms from (6)-but referring to the same thing, e．g． foreword, preface, introduction
2) synonyms referring to (7)_ of the same kind of thing, e．g． plain, prairie, tundra
3) synonyms having different degree of (8)__,e．g． teach, educate, instruct, school, tutor
4) synonyms implying different (9)_among the participants, e．g． accompany, escort, attend
5) synonyms having different degree of formality, e．g． luncheon vs lunch, go to bed vs hit the sack
IV． Conclusion
Correct choice of words is very important to the (10)_expression．
____________
参考答案：【答案仅供学习，请勿对照自行用药等】
答案解析：