3．Visitors are not allowed to touch anything that is being d________ in the museum.

2．I_________ he got home, Mr. Burke began to do the housework.

1．Since his childhood, Lang Lang has d_______ an interest in music.

7. naturally　　 8. require　 9. ended　 10. professor

4. introduction　 5. improving　 6. experiences

1. developing　　 2. missing　 3. preparing

21-25DDAAC，26-30BDACB　　　 　

31-35DAACC，36-40BBADC

1-5　 BDABB　　 6-10 CDDDC　

11-15 DDADC　 16-20 ADBCD

10.We will invite one of the famous ____________(教授) to give us a lecture at the end of this month.

Answer