题目内容
（请给出正确答案）
提问人：网友l******8
发布时间：2022年4月5日 21:49
[单项选择题]
Text 1 World oil production is about to reach a peak and go into its final decline. For years, ...Why are some major oil companies mentioned in the first paragraph（）
A．To show the concern of these companies about oil problem.
B．To prove what the author said is true.
C．To illustrate the importance of these companies.
D．To explain the cause of the oil problem.
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