单选题 China is developing a rural health care service system, I am sure more peasants will benefit ______.
  • A. of which
  • B. from which
  • C. in which
  • D. about which
【正确答案】 B
【答案解析】[解析] 这是一个非限制性定语从句，benefit from意为“从…获益”，故选B。