单选题 Questions 11 to 13 are based on the following passage.

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] 题干问：“罗马为什么建这么多的路?”听力材料的第一段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?

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 old 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.

【正确答案】 B

【答案解析】[解析] 题干问：“从这篇文章我们能得到什么结论?”材料中说“从公元前300年开始建路，到公元后200年，他们共建了5万公里的路。”及他们造路所用的原始的方法，可知他们建路花了很长的时间。