National standards for paved roads were in place by 1921. [br] Many of the probl

游客2023-08-03  20

问题 National standards for paved roads were in place by 1921. [br] Many of the problems presented by the country’s geographical features found solutions in innovative engineering projects.

选项 A、Y
B、N
C、NG

答案 A

解析 见第四段中间:... hundreds of unique engineering designs and solutions had to be worked out. Consider the many geographic features of the country....Urban areas were another problem.Innovative designs of... soon began to weave their way across the country....
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