单项选择题
Questions 11 to 13 are based on the following passage.
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.
点击查看答案&解析
相关考题
-
单项选择题
A．Where
B．When
C．How
D．Why -
单项选择题
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. -
单项选择题
A．developing
B．combining
C．changing
D．practicing
