首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
A、It improves hearing. B、It causes infections. C、It keeps our ears dry. D、It protects our ears. D录音提到耳垢有很多用途,包括保护和清洁耳朵,阻挡灰尘、昆虫等物
A、It improves hearing. B、It causes infections. C、It keeps our ears dry. D、It protects our ears. D录音提到耳垢有很多用途,包括保护和清洁耳朵,阻挡灰尘、昆虫等物
admin
2018-04-15
56
问题
Some people’s ears produce wax like busy little bees. This can be a problem even though ear wax appears to serve an important purpose. It protects and cleans the ear. It traps dirt and other matter, and it keeps insects out. Doctors think earwax might also help protect against infections. And the waxy oil keeps ears from getting too dry. So earwax is good. It even has a medical name: cerumen. And there are two kinds. Most people of European or African ancestry have the "wet" kind: thick and sticky. East Asians commonly have "dry" earwax.
But you can have too much of a good thing.
The glands in the ear canal that produce the wax make too much in some people. Earwax is normally expelled: it falls out of the ear or gets washed away. But extra wax can harden and form a blockage that interferes with sound waves and reduces hearing.
People can also cause a blockage when they try to clean out their ears, but only push the wax deeper inside. Earwax removal is sometimes necessary. But you have to use a safe method or you could do a lot of damage.
Experts at the National Institutes of Health, NIH, suggest some ways to treat excessive earwax yourself. The wax can be softened with mineral oil, glycerin or ear drops. Hydrogen peroxide or carbamide peroxide may also help.
Another way to remove wax is known as irrigation. With the head upright, take hold of the outer part of the ear. Gently pull upward to straighten the ear canal. Use a syringe device to gently direct water a-gainst the wall of the ear canal. Then turn the head to the side to let the water out.
The experts at NIH say you may have to repeat this process a few times. Use water that is body temperature. If the water is cooler or warmer, it could make you feel dizzy. Never try irrigation if the eardrum is broken. It could lead to infection and other problems.
After the earwax is gone, gently dry the ear. But if irrigation fails, the best thing to do is to go to a health care provider for professional assistance.
You should never put a cotton swab or other object into the ear canal. But you can use a swab or cloth to clean the outer part of the ear. Experts agree with the old saying that you should never put anything smaller than your elbow in your ear.
19 What is the function of earwax?
20 What can be used to remove earwax according to experts in NIH?
21 What do we learn about irrigation?
选项
A、It improves hearing.
B、It causes infections.
C、It keeps our ears dry.
D、It protects our ears.
答案
D
解析
录音提到耳垢有很多用途,包括保护和清洁耳朵,阻挡灰尘、昆虫等物质,防止耳朵感染,避免耳朵过于干燥等。因此选D项“保护耳朵”。
转载请注明原文地址:https://kaotiyun.com/show/cCT7777K
0
大学英语六级
相关试题推荐
StatesExperimentwithOut-of-ClassroomLearning[A]AttheendofAugust,mostofOhio’steenagerswillshakeofftheirsummerti
A、1.96million.B、19.6million.C、1.97million.D、19.7million.A录音最后提到,根据BBC的描述,在英国上大学的学生人数在近代历史上第一次下降,从2007年的197万下降至去年(2008年)的
A、Drivers.B、Songwriters.C、Journalists.D、Fastfoodcooks.C录音提到,数字媒体未来学家兼网站创始人AmyWebb建议要把营销师、记者和律师加入到即将失业的大军中。由此可知C项正确。
A、3weeks.B、3months.C、2months.D、Over1year.B选项是关于男士在欧洲要停留多长时间的,需要经过推断才能得到答案。女士说她的一个以前的同事正好要到他们所在的地方做一些研究,从6月到8月。男士说那正是他离开
Despitetheextremeenvironment,Australia’siconicLakeEyreBasinishometoarangeofaquaticanimals(水生物)—includingfish.I
InearlyAprilaseriesofreportsappearedonlineintheUnitedStatesandtheUnitedKingdomla-menting(抱怨)the"lazyFrench".
InearlyAprilaseriesofreportsappearedonlineintheUnitedStatesandtheUnitedKingdomla-menting(抱怨)the"lazyFrench".
A、Ignoringthegeneralmeaningofthetext.B、Payinglittleattentiontotheprintingmistakes.C、Pursuingathoroughunderstand
A、Setupyourownwebsite.B、Consultthebank’srepresentatives.C、Trybymakingtransfers.D、Checkyourstatements.BB为录音原文的关键词
A、Tolivehappily.B、Tobecontented.C、Toliveandcherishwhatyouhaveatthemoment.D、Tohaveagreatambition.C细节题。原文“The
随机试题
反驳有三种途径:反驳_______、反驳论据和反驳论证方式。
应用长效胰岛素发生低血糖反应的时间常在
超声波检测表面损伤层厚度时,一般采用()。
影响房地产价格的因素,归纳起来,主要有下列几个方面()。
核准机关在受理项目申请书后,应进行的项目审查有()
假定某居民企业2013年利润总额5(300万元,经查利润总颠中反映如下公益性捐赠项目:通过非营利社会团体向受灾地区捐赠自产货物,同类不舍税售价1000万元,成本700万元。请分析该业务的税务处理,并作出相关分录。
中国历史上第一个奴隶制国家政权夏朝建立在()。
国际足联一直坚称,世界杯冠军队所获得的“大力神”杯是实心的纯金奖杯,某教授经过精密测量和计算认为,世界杯冠军奖杯——实心的“大力神”杯不可能是纯金制成的,否则球员根本不可能将它举过头顶并随意挥舞。以下哪项与这位教授的意思最为接近?()
【B1】【B7】
Pollutantsaresubstanceswhich,whenpresentathighenoughconcentrations,produceharmfuleffectsonpeopleand/ortheenviro
最新回复
(
0
)