单项选择题

According to the passage, many people initially thought that E. L. Drake had made a mistake by ______.

A．going on a whaling expedition
B．moving to Pennsylvania
C．searching for oil
D．retiring from his job
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单项选择题
It on be inferred from the passage that kerosene was preferable to whale oil because whale oil was too ______.
A．expensive
B．thick
C．hot
D．polluted
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