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【单选题】A Roadmap for the Planet From the 18th through the mid-19th century, whale oil provided light to much of the Western world. At its peak, whaling employed 70,000 people and was the United States’ fifth...
A.
People replaced whale oil with kerosene for lighting.
B.
People have realized that whaling is too savage.
C.
People didn’t buy whale oil because of its high price.
D.
People were unwilling to go farther to kill whales.