题目

短周期元素X、Y的单质分别为M、N，在水溶液中发生置换反应：M+化合物（I）=N+化合物（II）（反应条件省略），下列推断不正确的是                                         （    ）     A．若X为金属、Y为非金属，则X和Y可能位于周期表中不同主族     B．若X为非金属，Y为非金属，则X和Y一定位于周期表中同一主族     C．若M、N在常温下呈气态，则X、Y不可能位于同一主族     D．若在常温下，M为气态，N为固态，则X、Y可能位阅读理解AAn Englishman was showing a foreign visitor around London.“What's that strange building?” asked the visitor.“That's the Tower (塔) of London.”“I see. How long did it take to build it?”“About 500 years.”“In my country we can build it in a few months.”said the visitor. After they came to St. Paul's Cathedral (大教堂), the visitor asked the same question. “Nearly forty years,”said the Englishman. “In my country we finish it in forty days at most,” said the visitor. This went on all day. They visited most of the best known buildings in the city. Every time they saw a new one, the visitor asked what it was and how long it took to build it. Then he said they could do the same thing much faster in his country. At last the Englishman got angry with the visitor though he tried not to show it. Several days later they came to the House of Parliament (议会) and the visitor asked his usual question, “What's that?” The Englishman answered, “I have no idea. It wasn't there last night.”根据短文内容，选择正确答案。（1）The Englishman showed the foreign visitor around ____ one day.A.the Tower of LondonB.St. Paul's CathedralC.some famous buildings in the cityD.the whole city of London（2）The visitor said that in his country it would take them ____ to build the Tower of London.A.less than a yearB.forty daysC.five hundred yearsD.fifty days（3）It took them a few days to see ____.A.some of the best known buildings in EnglandB.several most famous places in EnglandC.many famous houses in the city of LondonD.most of the best known buildings in London（4）The Englishman was very angry at the end of the day, but he ____.A.didn't want to say anythingB.tried to show it to the visitorC.had no time to tell the visitorD.tried not to show it to the visitor（5）The Englishman's answer to the question of the last place showed ____.A.he was sorry he didn't see the building beforeB.he could say nothing because he didn't know anythingC.he was angry and didn't want to tell the visitor its nameD.he didn't know how to tell the visitor the name of the building