{{I}}Questions 23 to 25 are based on the passage you
have just heard.{{/I}}
单选题
Why did the Romans build so many roads?
【正确答案】
D
【答案解析】[听力原文]23-25
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.
[精解] 题干问：“罗马为什么建这么多的路?”听力材料的第一段说说明了罗马建许多路的原因。即他们想快速地调动军队和需要贸易路线是他们建许多路的原因。所以答案选D。
单选题
What did the Romans do to dig tunnels for mountain roads?
【正确答案】
A
【答案解析】[精解] 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。