25.It’s important for the figures ______________ regularly.A.to be undated B.to have been updat

题目

25.It’s important for the figures ______________ regularly.A.to be undated B.to have been updat

答案

答案：A解释：1. 不定式的完成形式to have done sth强调其表示的动作发生在谓语动作之前.如：I consider him to have passed the exam. 我认为他已经通过了考试.to pass the exam动作发生在谓语动词consider之前.2. ...