1.(2012大纲卷)16. 100 ℃ is the temperatur e _________which water will boil
A. for B. at C. on D. of
【答案】B
【解析】考查介词在定语从句中的前置。temperature是which的先行词。根据习惯用法“a t the temperature”选B项。句意：100 ℃是水沸腾的温度。
2.(2012北京卷)34. Do you think this sh irt is too tight ________ the shoulders?
A. at B. on C. to D. across
