試題詳解

46 Which of the following is the main idea of the second paragraph?
(A) To raise doubts about the optimism that climate-change disbelievers express.
(B) To introduce potential commerce that an ice-free Arctic ocean may bring.
(C) To indicate incomplete knowledge people have of the Arctic’s economy.
(D) To differentiate the views of those who fear climate-change from those who don’t.