问题
选择题
Ted came for the weekend wearing only some shorts and a Tshirt，________ is a stupid thing to do in such weather.(2011·全国Ⅱ)
A．this
B．that
C．what
D．which
答案
答案：D
D [考查定语从句。分析句子结构可知，该句为定语从句，首先排除A和C；根据空前的逗号可知，该句为非限制性定语扶句，排除B。该从句应用which引导，which在从句中作主语，代指前面的整个句子。]