Third，there are benefits to trade. It allows for economic efficiency, and when we buy things from places that have lower production costs than we do, we benefit. And although you don't read about this much，the United States is also a large exporter of oil products, selling about 2 million barrels of petroleum products per day to about 90 countries.

　　There is no question that the United States imports

　　a great deal of energy and，in fact, relies on that steady

　　flow to maintain its economy. When that flow is interrupted, we feel the pain in short supplies and higher prices，at the same time，we derive massive economic benefits when we buy the most affordable energy on the world market and when

　　we engage in

　　energy

　　trade around the world.

　　1. What does the author think of biofuels?

　　A. They keep America's economy running healthily.

　　B. They prove to be a good alternative to petroleum.

　　C. They do not provide a sustainable energy supply.

　　D. They cause serious damage to the environment.

　　2. Why does America rely heavily on oil imports?

　　A. It wants to expand its storage of crude oil.

　　B. Its own oil reserves are quickly running out.

　　C. It wants to keep its own environment intact.

【【师说】2017届高考英语二轮复习天天增分训练：18（含解析）】相关文章：

★ 【优化方案】2017届高考英语二轮复习全国卷Ⅱ题型重组训练：第6组（含解析）

★ 2017届高考英语二轮复习课时训练：19（含解析）

★ 【优化方案】2017届高考英语二轮复习全国卷Ⅱ题型重组训练：第13组（含解析）

★ 【优化方案】2017届高考英语二轮复习全国卷Ⅱ规范练：6（含解析）

★ 【优化方案】2017届高考英语二轮复习全国卷Ⅱ题型重组训练：第17组（含解析）

★ 【优化方案】2017届高考英语二轮复习全国卷Ⅱ题型重组训练：第10组（含解析）

★ 【优化方案】2017届高考英语二轮复习全国卷Ⅱ题型重组训练：第16组（含解析）

★ 【优化方案】2017届高考英语二轮复习全国卷Ⅱ规范练：8（含解析）

★ 【优化方案】2017届高考英语二轮复习全国卷Ⅱ题型重组训练：第2组（含解析）

★ 【优化方案】2017届高考英语二轮复习全国卷Ⅱ规范练：3（含解析）