PartA ReadingAloud(模仿朗读)
Inthispart,youarerequiredtowatchavideoclipandreadafterthespeakerinthevideo.
In areas prone to flooding,this structure was raised on pilings.In the central Yellow River valley of China it rested on solid platform.Stone bases for each column,twice the diameter of the column,were placed on this platform,and the column raised on top of this.So,the elevation of a Chinese building has three elements:the podium underneath,the column in between and the big roof resting on top of the columns.Four columns form what is called a bay,groups of bays then form the different types of buildings.From the earliest times,the Chinese separated the supporting elements of a building from the enclosing elements.
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