单选题 ______their competitors, Graystone Juice's leaders stand by the company's commitment to its environmental responsibility by producing eco-friendly packaging.
  • A. Before
  • B. Instead
  • C. Unlike
  • D. Contrary
【正确答案】 C
【答案解析】这句话的意思是说，不像他们的竞争对手，Graystone Juice's公司领导层通过制造生态友好包装产品来履行他们公司对环保责任的承诺。(A)before在……以前；(B)instead代替、取代；(D)contrary与……相反，常跟to连用。