单选题 The book I was reading listed the various symptoms ______ a man could tell when his liver was not working properly.
  • A. by which
  • B. in which
  • C. which
  • D. to which
【正确答案】 A
【答案解析】[解析] 本题测试的是“介词+which”引导的定语从句的用法。本句中，“介词+which”引导的定语从句修饰的先行词是symptoms，而关系代词which代替的是symptoms，我们可以理解为by the symptoms a man could tell when his liver was not working properly。所以答案是选项A by which。