问题补充：
Hearing is very important to all of us. We can 36beautiful music, nice songs of birds, the laughter of people or other different kinds of 37in the world with our ears. 38we must try to protect our ears. The following will tell you 39protect ears.
Listening to 40music a lot can be bad for ears, 41when headphones（耳机）are used. So try not to wear headphones or 42the volume（音量）when you’re wearing headphones. You should give your ears a rest if you like wearing headphones.
43swimming, remember 44earplugs（耳塞）into your ears or wear a swim hat to stop water 45getting into your ears. If you go to a concert, wear earplugs to protect your ears from the terrible music! 46, special earplugs can be made for you if you go to concerts a lot or if you are a musician yourself. See a 47if your ears hurt. You’d better 48as what the doctor says. 49the suggestions above now and you won’t say “What, what…?” when you are getting 50.
【小题1】A. listen B. hear C. listening
【小题2】A. sounds B. noise C. voices
【小题3】A. Because B. Although C. So
【小题4】A. what to B. how C. how to
【小题5】A. loud B. aloud C. loudly
【小题6】A. specially B. especially C. special
【小题7】A. turn off B. turn down C. turn up
【小题8】A. Before B. After C. When
【小题9】A. put B. to put C. putting
【小题10】A. to B. with C. from
【小题11】A. In fact B. For example C. Even though
【小题12】A. teacher B. doctor C. friend
【小题13】A. to do B. doing C. do
【小题14】A. Listen B. Hear C. Follow
【小题15】A. young B. old C. sick B
答案：
(答案→)B
解析：
【小题1】因为listen 为不及物动词，而其后要接宾语，要介词to，故选B，hear为及物动词，故选B
【小题2】根据上下文的内容可知答案为A，表示各种各样的声音，故选A
【小题3】根据前后句子的关系为因果关系，故选C，表示所以的意思。
【小题4】how to do sth ，表示怎样去做了，故选C
【小题5】本题需要的是形容词，表示声音大的，故选A,其余的选项为副词，不符合题目的需要。
【小题6】本题需要的是副词，表示特别的，故选B
【小题7】根据词组的意思，可知答案为B，表示音量，调小点儿。
【小题8】根据下文的内容可知答案为A，表示在游泳之前，用耳塞将耳朵塞好，故选A
【小题9】remember to do sth ，表示记得要去做某事，remember doing sth 表示记得曾经做某事，故选B
【小题10】stop sb或sth from doing sth，故选C，表示阻止某人做某事。
【小题11】根据上下文的联系，可知答案为A
【小题12】根据后文的内容if your ears hurt.可知答案为B，表示去看医生的意思。
【小题13】you’d better 后接动词原形，故选C
【小题14】根据上下文的内容可知答案为C，表示遵守上文的内容，可知答案为C
【小题15】根据文章内容可知答案为B
