题目内容
19．The building，______ in the shape of an egg，is now just for tourists．（ ）| A． | designing | B． | designed | C． | to be designed | D． | having designed |
分析 这座被建成鸡蛋形状的大楼仅供游客参观．
解答 答案是B．本题考查过去分词；题干中需要的是building的定语，design和building之间是被动关系，故排除A和D；动词不定式表示将来，而大楼已经建成，故排除C，答案选B．
点评 首先判断选项中的动词在句中是以谓语还是非谓语形式出现，然后根据选项在句中的功能结合非谓语的基本用法做出合理的判断．
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