46. What is this passage mainly about?
(A)The life of an entomologist.
(B)The anecdote of a biologist.
(C) The story of the butterfly enthusiasts.
(D)The annual migration of monarch butterflies.
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統計: A(4), B(12), C(14), D(67), E(0) #678711
統計: A(4), B(12), C(14), D(67), E(0) #678711