第30题: [单项选择]Why does the author mention "Egypt's mighty pyramid builders" A. Because they once worked miracles. B. Because they were well-built. C. Because they were actually very weak. D. Because even they were unable to rescue their civilization. 参考答案:D 答案解析:文章开头的意思是:即使古埃及伟大的金字塔建筑者面对那场在公元前2180年促使他们文明毁灭的饥荒也无能为力。D说的是:即使是他们也不能挽救他们的文明。因此D是正确的答案。故答案为D。