单选题
Why did the Romans build so many roads? A. They wanted Rome to become the center of the world. B. They wanted to pave important roads with large, flat stones. C. They needed to keep their soldiers busy by making them build roads. D. They needed the roads to move large armies and trade goods.
【正确答案】
D
【答案解析】[解析] Over 2,000 years ago, Rome was the center of a large empire. The Romans needed a way to move their large armies quickly so they could protect their huge country. They needed trade routes. So they joined all the parts of their empire by a network of roads. Beginning in 300 BC, the Romans built roads in Europe, Asia, and North Africa. By AD 200, they had built 50,000 miles of almost straight highways. To build their roads, the Romans sometimes had to dig tunnels through mountains. They did mot have explosives to cut through the rock. They heated the rock with fire and then threw cold water over it. When the rock cracked, they dug it out with hand tools. Roman soldiers and slaves built the roads without powerful machinery. They had only simple tools. Yet the roads were so well built that they were used for hundreds of years.
单选题
What did the Romans do to dig tunnels for mountain roads? A. They cracked the rock with fire and cold water. B. They used explosives to break up the rock. C. They dug through mountains with machinery. D. They did it the way we do in modern times.
【正确答案】
A
【答案解析】[解析] 题干问：“为了挖山路隧道，罗马人做了什么?”听力材料中说“They heated the rock with fire and then threw cold water over it．When the rock cracked，they dug it out with hand tools．”这与答案A的意思一致，所以本题答案选A。
单选题
What conclusion can we make from the passage? A. Building roads without machinery was almost impossible 2,000 years ago. B. It took a long time for the Romans to build roads by hand. C. People still use the old Roman way of building roads. D. Stones were used only in roads in Asia.