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
考研
The oceans are the main source of humidity, but plants also pour moisture into the air. In one day, a five-acre forest can relea
The oceans are the main source of humidity, but plants also pour moisture into the air. In one day, a five-acre forest can relea
admin
2011-10-20
45
问题
The oceans are the main source of humidity, but plants also pour moisture into the air. In one day, a five-acre forest can release 20,000 gallons of water, enough to fill an average swimming, pool. A dryer extracts moisture from wet clothes, adding to humidity. Even breathing contributes to this sticky business. Every time we exhale, we expel nearly one pint of moist air into the atmosphere.
Using sophisticated measuring devices, science is learning more and more about the far-reaching and often surprising impact humidity has on all of us.
Two summers ago angry callers phoned American Television and Communications Corp.’s cable-TV operation in northeastern Wisconsin, complaining about fuzzy pictures and poor reception. "What happened," said the chief engineer, "was that the humidity was interfering with our signals." When a blast of dry air invaded the state, the number of complaints dropped sharply.
Humidity plays hob with our mechanical world as well. Water condensation on the playing beads and tapes of videocassette recorders produces a streaky picture. Humidity shortens the life of flashlight and smoke-detector batteries. When the weather gets sticky, the rubber belts that power the fan, air conditioner and alternator under the hood of our cars can get wet and squeak.
Moisture also causes pianos to go out of tune, often in no time flat. At the Wolf Trap Farm Park for the Performing Arts in Vienna, where pianos are tuned twice a day during the summer concert season. Often a tuner stands in the wings, ready to make emergency adjustments during performances.
Humidity speeds the deterioration of treasured family photos and warps priceless antiques. Your home’s wooden support beams, doors and window framers absorb extra moisture and expand-swelling up to three percent depending on the wood, its grain and the setting.
Too much moisture promotes blight that attacks potato and green-bean crops—adding to food costs. It also causes rust in wheat, which can affect grain-product prices.
Humidity affects our health, as well. We get more migraine headaches, ulcer attacks, blood clots and skin rashes in hot, humid weather. Since 1987, the Health, Weight and Stress Clinic at Johns Hopkins Hospital in Baltimore has tested over 1700 patients for responses to high humidity. They have reported increased dizziness, stomachaches, chest pains, cramps, and visual disturbances such as double and blurred vision.
选项
A、the main source of humidity
B、the impact of humidity on our world and ourselves
C、how humidity affect our life
D、the damage humidity has done to our world
答案
B
解析
本题为宗旨题。问短文谈论的主要是什么。纵缆全文,短文主要谈论了湿气对整个世界及我们本身的影响,文中举了大量的事例。故答案选项为正确选项。其他各项均不全面。
转载请注明原文地址:https://kaotiyun.com/show/Qkp4777K
0
考研英语一
相关试题推荐
WilliamAppleton,authorofthebookentitledFathersandDaughters,believesthatitisaWoman’srelationshipwithherfather
I______thepartymuchiftherehadn’tbeenquitesuchacrowdofpeoplethere.
______forapersonwhohasmoreproblemsthanyoudo.
It’saproblemthatvexessomeofChina’sbrightestminds:whyisChinasofarbehindtheworldinmath?Afterall,thisisaco
WhichofthefollowingstatementsisTRUE?Whichofthefollowingisclosestinmeaningtothephrase"feeloutofplace"?
WecanlearnfromthebeginningofthetextthatWal-MartStoresInc.willItcanbelearnedfromParagraph4that
MicrosoftcompanyinthesoftwareworldTheopen-sourcemovementisbasedontheideathat
Theenergycrisis,whichisbeingfeltaroundtheworld,hasdramatizedhowthecarelessuseoftheearth’sresourceshasbrough
HowmanyAmerica’scelebritybossesarementionedinthefirstparagraph?Whatisthemainideaofthepassage?
WhichofthefollowingcanbestdescribethemanagementofhumanresourcesinAmericancompanies?What’sthepositionofthehe
随机试题
______thatthepilotcouldn’tflythroughit.
A、1%~1.5%B、0.5%C、2%D、3%E、5%戊二醛用干灭菌浓度为()
颈椎右前斜位摄影,应观察
患者,男性,29岁。因转移性右下腹痛伴发热36小时入院,诊断为急性阑尾炎。急诊行阑尾切除术,并大剂量抗生素治疗,术后8天,体温38.5℃,患者出现下腹坠痛,里急后重,首选的检查方法是
在液塑限联合测定法中,土的性质对()时入土深度有显著影响。
班级管理应该以学生为核心,建立以学生为本的班级管理机制。()
系统流程图是一种传统工具,它用于描述(11)。
下面概念中,不属于面向对象方法的是______。
Theofficialresidenceofthe______isatnumber10DowningStreet,London.
Iforgot(turnoff)______thelightintheclassroomwhenIleftlastnight.
最新回复
(
0
)