单选题 As a salesman, he works on a ______ basis, taking 10% of everything he sells.
  • A. revenue
  • B. commission
  • C. salary
  • D. pension
【正确答案】 B
【答案解析】[解析] 各项的意思为：revenue税收；commission佣金；salary薪水；pension养老金。所以，本题选B。