91.（单选题）The policeman kept his eyes ________ on the screen of the computer to identify the criminal’s footprints.

37.（填空题）The weather here is rather hot and ______ （pleasant）.

36.（填空题）The document provides a ______ （reveal）insight into the government’s priorities.

35.（填空题）He gave us a very ______ （detail）description of the picture.

34.（填空题）You should not ______ （isolation）yourself from others.

33.（填空题）He is a ______ （frequency）customer in our restaurant.

32.（填空题）Aside from the blue one, all of the books on the shelf were______（write）by her.

31.（填空题）The failure of the plan was due to bad ____________ （manage）.

30.（填空题）It is difficult to judge the likely ____________（impact）these changes will have on employment patterns.

29.（填空题）The book raised a storm of ____________（controversy）.

28.（填空题）These devices allow the robot to have dynamic _____（interact）with its environment.