练习：
1.Paragraph 2__________.
2.Paragraph 3__________.
3.Paragraph 4__________.
4.Paragraph 5__________.
A Necessity for developing adult education
B Early days of adult education
C Ways of receiving adult education
D Growth of adult education
E Institutions of adult education
F Definition of adult education
5.Some adults want to learn _______________.
6.There are various forms of adult education,including ____________.
7.Adult education has been made necessary ___________.
8.The earliest organized adult education _______________.
A by social and economic changes
B guided self-study and correspondence courses
C by studying together with children
D what they did not manage to learn earlier
E dates back to the eighteenth century
F mass production
答案：C A B D D B A E
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