单选题 ______ so many profits have been made in the past 4 years is the strongest argument for continuing the business.
  • A) What
  • B) Since
  • C) Now that
  • D) That


【正确答案】 D
【答案解析】[分析] 本题测试点为由that引导的主语从句，that在从句中不可省略。