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Question 5 of 6
Why does the professor mention crude oil that is found in pools?

A.

To point out a common misconception about crude oil

B.

To explain why crude oil must be refined before it can be burned

C.

To describe the state in which most crude oil is found

D.

To support a previous statement about low pressure on crude oil 

我的答案:

正确答案:A

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