48. What are the passages above mainly about?
(A) Some ways to feel closer to nature
(B) Busy urban life
(C) Expensive machines
(D) Diligent students
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統計: A(335), B(19), C(12), D(17), E(0) #2077817
統計: A(335), B(19), C(12), D(17), E(0) #2077817