单选题 Nowadays, our government advocates credit to whatever we do or whoever we contact with. Once you ______ your words, you will lose your social status and personal reputation.
A. keep up with B. give away from
C. go back on D. lose sight of

【正确答案】 C

【答案解析】go back on违背，毁约。句意：如今我们的政府提倡做任何事、与任何人联系都要讲诚信。一个人一旦违约，就会失去社会地位和信誉。A．keep up with跟上，赶上；B．give不能和 away from搭配；D．lose sight of不再看见，忘记，忽略。