单选题 Under the present system, state enterprises must ______ part of the profits to the government.
  • A.turn down
  • B.turn up
  • C.turn out
  • D.turn in
【正确答案】 D
【答案解析】[解析] D turn in意为“上交,上缴”,与题干中的all profits to the government构成合理搭配,故为答案。而A turn down意为“拒绝,减弱”,B turn up意为“出现,露面”,C turn out意为“结果是”,都与题意不符,故排除。