题目

Yu Guangzhong is a famous writer and poet______ wrote the well-known poem Nostalgia (《乡愁》) and passed away on December 14th, 2017.A. who B. which C. what D. whose 答案：【答案】A【解析】句意：余光中是一位著名的作家和诗人，曾写过著名的《乡愁》，于2017年12月14日去世。考查定语从句。A. who谁；B. which哪一个；C. what什么；D. whose谁的；由题干可知本题考查定语从句，先行词指的是人，所以引导定语从句的关系代词用who来引导；故答案选A。水结成冰后，体积增加了19，冰化成水后体积减少了()()．