雅思口语Part2答案：Describe an unusual building
2016-01-28 英伦雅思 彭百万雅思口语
Elizabeth Tower (previously called theClock Tower or St. Stephen's Tower), more popularly known as Big Ben, wasraised as a part of Charles Barry's design for a new palace, after the oldPalace of Westminster was largely destroyed by fire on the night of 16 October1834. The new Parliament was built in a Neo-gothic style. Although Barrywas the chief architect of the Palace, he turned to Augustus Pugin for thedesign of the clock tower, which resembles earlier Pugin designs, including onefor Scarisbrick Hall. The design for the tower was Pugin's last design beforehis final descent into madness and death, and Pugin himself wrote, at the timeof Barry's last visit to him to collect the drawings: "I never worked sohard in my life for Mr Barry for tomorrow I render all the designs forfinishing his bell tower & it is beautiful." The tower is designedin Pugin's celebrated Gothic Revival style, and is 315 feet (96.0 m) high.
The bottom 200 feet (61.0 m) of the tower'sstructure consists of brickwork with sand coloured Anston limestone cladding.The remainder of the tower's height is a framed spire of cast iron. The toweris founded on a 50 feet (15.2 m) square raft, made of 10 feet (3.0 m) thickconcrete, at a depth of 13 feet (4.0 m) below ground level. The four clockdials are 180 feet (54.9 m) above ground. The interior volume of the tower is164,200 cubic feet (4,650 cubic metres).
Despite being one of the world's mostfamous tourist attractions, the interior of the tower is not open to overseasvisitors, though United Kingdom residents are able to arrange tours (well inadvance) through their Member of Parliament. However, the tower has nolift, so those escorted must climb the 334 limestone stairs to the top.
Due to changes in ground conditions sinceconstruction, the tower leans slightly to the north-west, by roughly 230millimetres (9.1 in) over 55 m height, giving an inclination of approximately1/240. This includes a planned maximum of 22 mm increased tilt due totunnelling for the Jubilee line extension. Due to thermal effects itoscillates annually by a few millimetres east and west.