单选题 ______ that the ancient Egyptians were highly organized and clever in building the pyramids(金字塔).

【正确答案】 D
【答案解析】[分析] 本题的测试点为句子结构。在英语中，主语从句常用形式主语it来代替并置于句首，而把主语从句放在句尾。例如；It is too bad that you couldn' t come。你不能光临实在是太遗憾了。