单选题 The next decade could see commuter speeding to work at about 300 miles per hour aboard magnetic levitation vehicles, according to a report by Argonne Nation-al Laboratories. But before "maglev" vehicles can become commercial successes, the report says, people need to stop thinking of them as high-speed trains. Instead, consider them low-flying aircraft. Argonne contends that maglev vehicles will be best suited to replace commuter aircraft. Plane flights under 600 miles are the least energy-efficient, and maglev "planes" should cut these fuel needs by up to 750/00. Reportedly, the money saved by a 2,000-mile maglev network linking major cities would be more than pay for its construction in 20 years. The quiet purr of levitating crafts would also be balm for neighborhoods tormented by the roar of conventional takeoffs and landings. The technology behind magnetic levitation is already well understood, the reports notes. The German and the Japanese have several full scale working models. Meanwhile, research in the United States has lapsed.

单选题 What is the best title for this passage?

单选题 According to the passage, when could people start using a maglev commercially?

单选题 Why could maglev trains replace short-flight commuter aircraft?

【正确答案】 C

【答案解析】从文中得知“Plane flights under 600 miles are the least energy—efficient，and maglev planes should cut these fuel needs by up to 75％．”可见新型的交通工具非常节省燃料。

单选题 Argonne believes that people should regard maglev transportation as______.

【正确答案】 C

【答案解析】从文中“people need to stop thinking of them as high speed trains．Instead，consider them low flying aircraft．”可以看出Argonne认为该种新型交通工具应被看做是一种飞行器。

单选题 For a commuter trip of 500 miles, about how much less fuel would maglev train use compared to a small plane?

【正确答案】 C

【答案解析】从这句话“Plane flights under 600 miles are the least energy—efficient，and maglev planes should cut these fuel needs by up to 75 percent．”得知省燃料可达75％。