52. Which of the following best describes the author’s attitude toward the future of desalination?
(A) Amazed.
(B) Doubtful.
(C) Conservative.
(D) Hopeful.
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統計: A(5), B(28), C(25), D(105), E(0) #1752055
統計: A(5), B(28), C(25), D(105), E(0) #1752055