单项选择题

Questions 23 to 25 are based on the passage you have just heard. 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.
<上一题 目录 下一题>
热门 试题

单项选择题
We can infer from the passage that quakes ______.
A．may happen anywhere at any time
B．are hardly the direct cause of fatalities
C．are unobservable in masses of land
D．mostly strike in oceans and mountains
单项选择题
How old was the man on his first day at school
A．Six years old.
B．Over six years old.
C．Five years old.
D．Ten years old.
相关试题