22. What do parents tell their children to do?
A.Listen to music. | B.Take music lessons. | C.Turn music down. |
23. According to the test, how many of the students had pain in their ears?
A.Nearly 15%. | B.Nearly 20%. | C.Nearly 25%. |
24. To protect our hearing, how long can we use earphones every day?
A.Two hours. | B.One hour. | C.One and half an hour. |
25. What is this program about?
A.Health. | B.Music. | C.Environment. |