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 本文是一篇記敘文．文章講述了北京天安醫院的耳鼻喉醫師Feng Yongfeng對長期戴耳機的看法以及提出的建議．

解答 16．popularity 考查名詞．形容詞wide后，介詞of前，要接名詞，故填popularity．
17．while 考查連詞． 根據句意，這里表示在公園跑步或者坐公交車的時候，經常看見人們帶著耳機．故用while引導．
18．them 考查代詞．根據句意，這里表示音量如此大以至于他們周圍的人都可以聽到，指代"戴耳機的那些人"，且位于介詞后，要用賓格形式，故填them．
19．potentially 考查副詞． 根據句意，這里是用來修飾動詞damage，要用副詞形式，故填potentially．
20．to turn 考查固定詞組（非謂語動詞）．動詞tend后要用不定式to do作賓語，構成tend to do sth"傾向于做某事"，故填to turn
21．without 考查介詞．根據句意，這里是指很多人沒有意識到這一點，故填without．
22．a 考查冠詞．根據句意，這里指有聽力問題的人的數量有一些輕微的增加，表泛指的增加，故填a．
23．which 考查定語從句．根據句子成分分析可知，Feng attributed to them wearing headphones at home for long periods during the holiday是一個非限制性定語從句，修飾前面的整個句子，指物，故用which引導．
24．advised 考查動詞的時態．根據句意和句子成分分析可知，該空和前面的said一起做并列的謂語，故填advised．
25．investing 考查非謂語動詞（ 固定句型）．worth后面要跟v-ing形式作賓語，構成sth be worth doing結構，故填investing．

點評 1．形容詞后of前一般要用名詞形式
2．若主、從句表示兩個同時進行的持續性動作，且強調主句表示的動作延續到從句所指的整個時間，通常要用while．（如題17）