单项选择题

Civil engineers of ancient times were intelligent enough to build entire cities, including______.

A．systems of pipes, bridges, and pyramids
B．pipeline systems, bridges and farmlands
C．water supply systems, bridges, and pipelines for cultivation
D．water supply systems, bridges and structures
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单项选择题
From the passage we know that______.
A．building materials were broken into smaller pieces of all sizes
B．there were no requirements for the size and shape of building materials
C．Egyptian engineers were not concemod with the size and shape of the building materials
D．building materials were processed to meet certain requirements for their size and shape
单项选择题
The base, of Gizeh Pyramid is cited by the author as a perfect example of______.
A．exact measurement adopted by the designers
B．great scientific ability of the builders
C．permanent works of art and design
D．a very large square
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