洛阳是国务院首批公布的历史文化名城，以洛阳为中心的河洛地区是华夏文明的重要发祥地。洛阳在中国古代中的人文史记，诗词曲艺，史话传说，礼仪风俗中都具有特殊重要的地位。以下政权曾定都洛阳的是（    ）

①西汉   ②东汉   ③西晋   ④东晋   ⑤北魏

培根指出：“印刷术、火药、指南针曾改变了整个世界，变化如此之大，以致没有一个帝国，没有一个教派，没有一个赫赫有名的人物，能比这三种发明在人类事业中产生更大的力量和影响。”这里所说的“影响”主要是指（   ）

根据短文内容, 回答下列问题。

    It is August 2050. Mrs Peng and Mr Yu are writing about hotels and houses on their posts.

    The Hotel Whale

    The Hotel Whale is built (A) 在水下. It is in the shape of a whale. This hotel has 50 bedrooms, a cafe and a shopping centre.

    Mrs Peng: "When we were staying at the hotel recently, my children watched the fish outside their bedroom window. (B)They were never bored."

Forever Green Houses

    These houses are both "green'' and "smart". There is glass outside the houses. Heat is held under the glass and is then used as energy for(C) each house. In the bathroom. Your medicine cupboard is connected to your doctor's computer. In the kitchen, your smart fridge tells the supermarket's computer when you (D)need more food.

    Mr Yu: "When we were living in our old house, we were using more energy. J would certainly recommend Forever Green Houses to my friends. (E)They will satisfy everyone.''