第7题: [单项选择]Which of the following is NOT true A. Crude oil is found below land and water. B. Crude oil is always found a few hundred feet below the surface. C. Pumping and pressure force crude oil to the surface. D. A variety of petroleum products is obtained from crude oil. 参考答案:B 答案解析:[解析]由文中“from a few hundred feet below the surface to as deep as 25 000 feet into the earth's interio