Question

18．It's easy to take your hearing for granted until it's too late．
With the wide（16）popularity（popular） of digital entertainment products，it is not uncommon to see people wearing headphones and listening to music（17）whilerunning in the park or using public transport．And the volume is often so loud that people around（18）themcan hear the music as well．
However，doctors warn that such behavior can（19）potentially（potential） damage their hearing．"In noisy places，people tend（20）to turn（turn） the volume up to get the same clarity of sound．Unfortunately，that can damage the hearing（21）withoutpeople being aware of it，"said Feng Yongfeng，chief ENT physician at Beijing Tian'an Hospital．
After Spring Festival，the hospital witnessed（22）aslight increase in the number of teenagers coming in with hearing problems，（23）whichFeng attributed to them wearing headphones at home for long periods during the holiday．Feng said both in-ear and overhead headphones can harm the ears and（24）advised（advise） against using them for long periods．He said if you do use headphones it is worth（25）investing（invest） in the highest quality you can afford．

Answer 1

分析 本文是一篇记叙文．文章讲述了北京天安医院的耳鼻喉医师Feng Yongfeng对长期戴耳机的看法以及提出的建议．

解答 16．popularity 考查名词．形容词wide后，介词of前，要接名词，故填popularity．
17．while 考查连词． 根据句意，这里表示在公园跑步或者坐公交车的时候，经常看见人们带着耳机．故用while引导．
18．them 考查代词．根据句意，这里表示音量如此大以至于他们周围的人都可以听到，指代"戴耳机的那些人"，且位于介词后，要用宾格形式，故填them．
19．potentially 考查副词． 根据句意，这里是用来修饰动词damage，要用副词形式，故填potentially．
20．to turn 考查固定词组（非谓语动词）．动词tend后要用不定式to do作宾语，构成tend to do sth"倾向于做某事"，故填to turn
21．without 考查介词．根据句意，这里是指很多人没有意识到这一点，故填without．
22．a 考查冠词．根据句意，这里指有听力问题的人的数量有一些轻微的增加，表泛指的增加，故填a．
23．which 考查定语从句．根据句子成分分析可知，Feng attributed to them wearing headphones at home for long periods during the holiday是一个非限制性定语从句，修饰前面的整个句子，指物，故用which引导．
24．advised 考查动词的时态．根据句意和句子成分分析可知，该空和前面的said一起做并列的谓语，故填advised．
25．investing 考查非谓语动词（ 固定句型）．worth后面要跟v-ing形式作宾语，构成sth be worth doing结构，故填investing．

点评 1．形容词后of前一般要用名词形式
2．若主、从句表示两个同时进行的持续性动作，且强调主句表示的动作延续到从句所指的整个时间，通常要用while．（如题17）