Road Building
People of early civilizations built roads of a sort. However, the first good road _____（1） were the Romans. They built the earliest network of hard-surfaced roads. The Romans _____（2） their road building about 300 B.C. and continued for about five hundred years.
Roman roads were good because the people _____（3） how to lay a solid, thick base. On top of this, they put a pavement （路面）of flat _____（4） . Their roads were a bit _____（5） in the center than on the sides. Along the sides ran ditches （沟渠）so that the _____（6） could run off. These roads were also very _____（7）. They went over most of the hills instead of around them.
The Roman roads were used _____（8） by soldiers. At first, these roads went through Italy. Then, as the Roman Empire spread, roads were built in other _____（9） of Europe. In all they laid about 50,000_____（10）of roads.
A. builders
B. miles
C. stones
D. higher
E. correctly
F. straight
G. mainly
H. countries
I. clearer
J. began
K. water
L. knew
【正确答案】：1. A 2. J 3. L 4. C 5. D 6. K 7. F 8. G 9. H 10. B
【题目解析】：1.由空后的Romans罗马人可知，空格处应为一个修饰人的名词，根据句意，选项A符合题意，故选A。
2.由空前的主语The Romans和空后的宾语their road可知，空格处缺少一个动词作谓语，根据句意，选项J符合题意，故选J。
3.由空前的because另起的一个句子可知，空格处需要一个动词作谓语，根据句意，选项L符合题意，故选L。
4.由空前的名词短语a pavement of flat可知，空格处需要一个形容词修饰名词，根据句意，选项C符合题意，故选C。
5.由空前的a bit可知，空格处应为一个形容词，根据句意，选项D符合题意，故选D。
6.由空前的定冠词the可知，空格处需要一个名词，根据句意，选项K符合题意，故选K。
7.由空前的副词very可知，空格处需要一个形容词，根据句意，选项F符合题意，故选F。
8.由空前的动词were used可知，空格处需要一个副词修饰动词，选项G符合题意，故选G。
9.由空前的形容词other可知，空格处需要一个名词，且为名词的复数形式，选项H符合题意，故选H。
10.由空前的数词50,000可知，空格处需要一个名词，且为名词的复数形式，根据句意，选项B符合题意，故选B。
