46. What does the Indiana University study show?

27.

23.

11. ________ on the cyberspace issue in a speech at a welcoming dinner in Seattle, Xi Jinping called on all countries to cooperate and draw up Internet policies corresponding with their national conditions.

47. What does Grace Kao say about interracial lodging?

25.

28.

52. It can be inferred that the author is most probably ________.

32.刘老师会在每次考试前提醒学生好好复习，根据桑代克的基本规律，这是（ ）的体现。

30.

39.

2.The principle stressed using multimedia would never replace the one-to-one ________ between pupil and teacher.