There are various forms of adult education includ
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There are various forms of adult education,including______.
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
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答案：B
由文章第二段第一句话“This kind of education may be in the form of self-study with proper guidance through the use of libraries , correspondence courses , or broadcasting.”可知，成年人可以通过使用图书馆、相关课程或者广播，在合适的指导下进行自学。故选B。