33. What does “it” in the last paragraph refer to?
(A) The financial profit
(B) The environmental preservation
(C) The carbon credit system
(D) The Amazon rainforest
(E) The decision-making process
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統計: A(2), B(2), C(10), D(6), E(0) #3431584
統計: A(2), B(2), C(10), D(6), E(0) #3431584