49. What is the main idea of the passage?
(A) How people search for words on the internet
(B) Why blogs are so popular
(C) What people do on their blogs
(D) The differences between blogs and newspapers/ magazines
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統計: A(0), B(12), C(2), D(2), E(0) #3173529
統計: A(0), B(12), C(2), D(2), E(0) #3173529