the leaning tower of pisa

题目

the leaning tower of pisa
The tower of Pisa was built to be the most beautiful bell tower in all of Italy.It is the bell tower for Pisa Cathedral.However,not only is the marble tower beautiful,it is perhaps the strangest tower in the world.lt leans to one side and looks like it is going to fall over.
The building of the tower began in August 1173 and took nearly tow hundred years to complete.Nobody is certain who designed the tower,but for many years it said that Bonanno Piisano was the architect,ln 1319,all the floors were finished and years laters,work eventuallybegan on the bell chamber at the top.lt wasofficially opened after nearly 200 years of construction.The tower has eight floors.lt is 54.5 metrestall with 294 steps up to the bell chanber.From the top,there is a very beautiful view.ltalian scientist,Galileo ,once did his famous experiments about gravity and falling objects from the top of the tower.
Why does the towerlean?ln fact,it was already while they are build

答案

在比萨斜塔
10 - 离问题结束还有14天23小时
该塔建的比萨是在Italy.It最漂亮的钟楼,是比萨大教堂的钟楼.然而,不仅是美丽的大理石塔,它也许是在world.lt奇怪的塔倾斜到一边,看起来是会摔倒.
该塔的建设开始于1173年8月,花了近百年complete.Nobody丝束是谁设计的一些塔,但多年来它说,博南诺Piisano是建筑师,LN的1319年,完成了所有的地板和年laters工作的钟室eventuallybegan在top.lt wasofficially经过近200年construction.The塔翻开的8 floors.lt是54.5与294步骤metrestall到钟chanber.From上方,有一个很美丽的景色.意大利的科学家伽利略,曾经做过有关的严重性,并从塔顶高空坠物的著名实验.
为什么towerlean?LN的事实,已经是当他们正在建设it.As尽快三层楼已建成,布1178年,它开始倾斜的地面sank.The下它试图使塔直又是建设者他们不需增加更多的层,但只到cotined瘦到约1毫米,每年瘦,直到最后的塔grew.lt,就更糟1990年1月7日,这是不对公众开放对于10梨,塔的拯救顶部是一个严重的科学问题是由5metres倾斜到南方,如果它的运动没有停止,该塔有一天会在1911年秋季over.Measurements采取的估计,到2050年塔会倒塌,如果不是sooner.After 10多年的努力,它被正式重新开放on16 6月2001.However,它没有开放到2001年年底,甚至现在向市民,游客人数restricted.lt现在是安全的,因为在未来三百年工程师减少瘦了50厘米,给它同样的倾斜,它曾在1838年.