提高程序可读性与易维护性的关键是使程序结构______ 。
参考答案：简单清晰
解析：
[分析]： 提高程序可读性与易维护性的关键是使程序结构简单清晰。
There were two large buildings, _____ stands nearly a hundred feet high. [ ]
A. the larger
B. the larger of them
C. the larger of whom
D. the larger of which
水准仪应放置在干燥、通风、温度稳定的室内，可以靠近火炉或暖气片。
