47.According to the passage,when did Herakleion and Eastern Canopus disappear?
48.As Stanley said,if you want to know how,when or why Herakleion and Eastern Canopus disappeared,there was/were____________to refer to.
49.Stanley thought that_________was to blame for the citiescollapse in the middle of the eighth century A.D.
50.What found below the waters could show that the cities were once the destinations for religious pilgrims?
51.According to the author,the fortunes of Herakleion and Eastern Canopus declined in__________________.
中国大陆承诺为台湾渔民提供护渔服务
美国总统大选:奥巴马罗姆尼首场辩论
国内英语资讯:China ready to work with Pacific island countries to deal with climate change: special envoy
淘宝联手国际反假联盟,在线假货哪里逃?
英国白内障大象术后重见光明 难以置信用鼻子揉眼睛确认
远离电子设备是福还是祸?
国内英语资讯:China to meaningfully lower real interest rates through market-oriented reform
美国加州公园爆发致命病毒 近万人健康受威胁
刘翔躺着也中枪 被代言男科医院广告
细节决定健康:5个有害健康的常见生活习惯