[解析]
41 B 细节理解题:根据第四段The Tower Bridge was first painted chocolate brown.Then in 1977,it was painted red,white and blue塔桥首先被涂上了巧克力棕色,然后在1977年,它被涂成红色,白色和蓝色.它是1894年建造的,故本题错误.
42 A 细节理解题:根据第二段The Tower Bridge was set up over the River Thames in London in 1894塔桥于1894在伦敦泰晤士河上建立起来.故本题正确.
43 A 细节理解题:根据第三段But in fact,the Tower of London was built a thousand years ago,while the Tower Bridge only has a history of over one hundred years.
但事实上,伦敦塔建于一千年前,而塔桥只有超过一百年的历史.故本题正确.
44 A 细节理解题:根据第二段It used to be raised about 50 times a day,but now it is raised only 4to 5times a week过去一天提高约50次,而现在一周只4到5次.故本题正确.
45 B 大意理解题:根据第一段And the Tower Bridge is the first bridge you have to pass if you go to London from the sea如果你从海上去伦敦,塔桥是你必须经过的第一座桥.文章具体介绍了它的建造时间,地理位置,及特点等.故本题错误.
[点评]
本题考查了"史地常识类阅读,判断推理,阅读判断题",属于"综合题",做题时结合原文和题目有针对性的找出相关语句进行仔细分析,结合选项选出正确答案是解题的关键。