完形填空。 Hearing is very important to all of us. We can 1 beautiful music, nice songs of birds, the laughter of people or other different kinds of 2 in the world with our ears. 3 we must try to protect our ears. The following will tell you 4 protect ears. Listening to 5 music a lot can be bad for ears, 6 when headphones(耳机) are used. So try not to wear headphones or 7 the volume(音量)when you're wearing headphones. You should give your ears a rest if you like wearing headphones. 8 swimming, remember 9 earplugs (耳塞) into your ears or wear a swim hat to stop water 10 getting into your ears. If you go to a concert, wear earplugs to protect your ears from the terrible music! 11 , special earplugs can be made for you if you go to concerts a lot or if you are a musician yourself. See a 12 if your ears hurt. You'd better 13 as what the doctor says. 14 the suggestions above now and you won't say 'What, what… (     )1. A. listen (     )2. A. sounds (     )3. A. Because (     )4. A. what to (     )5. A. loud (     )6. A. specially (     )7. A. turn off (     )8. A. Before (     )9. A. put (     )10. A. to (     )11. A. In fact (     )12. A. teacher (     )13. A. to do (     )14. A. Listen (     )15. A. young B. hear B. noise B. Although B. how B. aloud B. especially B. turn down B. After B. to put B. with B. For example B. doctor B. doing B. Hear B. old C. listening C. voices C. So C. how to C. loudly C. special C. turn up C. When C. putting C. from C. Even though C. friend C. do C. Follow C. sick