Which of the following pairs of synonyms comes from the source of borrowing?（ ）
A、finish—get through
B、drunk—elevated
C、railway一railroad
D、buy一purchase
【正确答案】：D
【题目解析】：本题考查同义词来源于借词的例词。finish—get through：结束；drunk—elevated：醉酒的/微醺的；railway一railroad：铁路；buy一purchase：买。buy一purchase来源于借词。buy是本族语词，purchase是外来语。而finish—get through属于与习语的巧合，drunk—elevated属于比喻词和委婉语，railway一railroad属于方言词，railway是英式英语，railroad是美式英语。故D选项符合题意。
