单项选择题

According to the passage, "West Texas Intermediate" (Line 4, Paragraph 4) refers to

A．an oil industry.
B．an oil company.
C．a government organization.
D．a kind of crude oil.
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单项选择题
What is the tone of the passage
A．Humorous.
B．Indifferent.
C．Serious.
D．Anxious.
单项选择题
According to some loud chorus, the oil price in the new era will be as low as
A．about ＄10 a barrel.
B．nearly ＄ 30 a barrel.
C．＄ 30～40 a barrel.
D．＄ 50 a barrel.
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