30. In this age of information, the role of museums within society is changing _______ and rapidly.

A. originally　　　　　　　 B. fundamentally　　　 C. cautiously　　　　　　 D. slightly

29. ________ the weather, the press conference will still be held on time.

A. Instead of　　　　　　 B. In relation to　　　　 C. Regardless of　　　 D. On behalf of

28. We should learn to save our natural resources so that they can be ________ for our younger generations.

A. responsible　　　　　 B. permanent　　　　　 C. spare　　　　　　　　　 D. sustainable