49 What is this passage mainly about?
(A) It is about how Ethan Zuckerman first served as a volunteer and became rich later.
(B) It is about how Ethan Zuckerman became rich and still helped with charity work.
(C) It is about how Ethan Zuckerman founded a dot-com company to help Ghana.
(D) It is about how Ethan Zuckerman found pleasure in helping developing countries.
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統計: A(0), B(7), C(4), D(3), E(0) #2994192
統計: A(0), B(7), C(4), D(3), E(0) #2994192