相关推荐： 托福阅读推断题题目及答案汇总 托福阅读推断题题目及答案汇总解析 托福阅读推断题题目及答案汇总图
托福阅读推断题本质是逻辑推理型事实信息题。为大家带来托福阅读推断题范例及答案，希望对大家托福备考有所帮助。更多精彩尽请关注!
托福阅读推断题范例(1)
Paragraph 3：Oil pools are valuable underground accumulations of oil, and oil fields are regions underlain by one or more oil pools. When an oil pool or field has been discovered, wells are drilled into the ground. Permanent towers, called derricks, used to be built to handle the long sections of drilling pipe. Now portable drilling machines are set up and are then dismantled and removed. When the well reaches a pool, oil usually rises up the well because of its density difference with water beneath it or because of the pressure of expanding gas trapped above it. Although this rise of oil is almost always carefully controlled today, spouts of oil, or gushers, were common in the past. Gas pressure gradually dies out, and oil is pumped from the well. Water or steam may be pumped down adjacent wells to help push the oil out. At a refinery, the crude oil from underground is separated into natural gas, gasoline, kerosene, and various oils. Petrochemicals such as dyes, fertilizer, and plastic are also manufactured from the petroleum.
请关闭浏览器的畅读模式或者取消屏蔽JavaScript的正常运行，避免出现内容显示不全或者段落错乱。
原网页地址：https://www.potelypower.com/xuexi/478458.html