单选题 The market for (manufactured goods) is (which) economists call "imperfect," because each company has its own style; and all of the arts of advertisement and salesmanship are devoted (to making) it (even more imperfect) by attracting buyers to particular brand names.
  • A. manufactured goods
  • B. which
  • C. to making
  • D. even more imperfect


【正确答案】 B
【答案解析】[解析] what引导表语从句，而which引导的是定语从句。