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
The Magic of Sound Music is one of the most beautiful forms of artistic expressions ever invented. In movies and plays, music ha
The Magic of Sound Music is one of the most beautiful forms of artistic expressions ever invented. In movies and plays, music ha
admin
2009-06-15
72
问题
The Magic of Sound
Music is one of the most beautiful forms of artistic expressions ever invented. In movies and plays, music has an added function: it not only moves people but also can shock people. Is it true that an ordinary musical instrument can be so powerful?
Our eardrums can withstand sound within 20 to 80 decibels. Once sound exceeds this limit, even beautiful music will become ear-splitting noise and harm health. A strong blast of high sound can twist and break a solid iron sheet.(46)
The noise from a plane’s engine is over 140 decibels. However, the sound of a flute is at most a few decibels.(47)It has been proven that people who have worked in an environment with a high sound intensity for a long time suffer varying degrees of heart disease or altered brain waves.
In movies, sometimes the hero can produce a sound that ordinary people can’t hear and only those who have the same ability can feel. In nature, there is actually sound that is beyond our hearing. In physics, the sound that exceeds 20,000 Hz is called ultrasonic.(48)It does no harm to health.
Sound less than 20 Hz is called infrasonic waves. When we move, the air will vibrate.(49)As the frequency of infrasonic waves is close to that of people’s internal organs, infrasonic wave may cause resonance in human bodies. As a result, people’s vision may weaken and internal organs may rupture. However, whether an infrasonic wave can be used as a weapon depends on its intensity. If its intensity is very low, it won’t damage internal organs or a person’s health.(50)When wind blows at a force of 3 or 4 over the sea6, it will produce infrasonic waves of several decibels. Only typhoons can produce infrasonic waves of over 100 decibels. At present, scientists can only produce infrasonic weapons in the lab with the help of advanced scientific tools and powerful electric power.
A. High sound of 150 decibels can kill a healthy rat.
B. The vibration of air can produce infrasonic waves.
C. We cannot play high-pitched music with ordinary musical instruments.
D. If the intensity of infrasonic wave exceeds 160 decibels, it is extremely harmful.
E. Dolphins, whales and bats can make such high-frequency sound.
F. Therefore, the sound of ordinary musical instruments cannot harm your health.
选项
答案
A
解析
本段要说明,音量超过80分贝,即使是美妙的音乐,对人体也有害。“空1”前面的句子说:一阵高分贝的强烈的冲击波能使一块铁板扭曲和破裂。“空1”的句子应该与高分贝的声音的危害性有关。选项A的“High sound of 150 decibels can kill a healthy rat”是高分贝声音的危害性的又一个例子。从“空1”位置上隐去的句子必是此句。A是答案。
转载请注明原文地址:https://kaotiyun.com/show/aWhd777K
本试题收录于:
职称英语理工类基础题库职称英语分类
0
职称英语理工类基础
职称英语
相关试题推荐
Accordingtoastudyauthor,whenpeoplewithapositiveemotionalstyledogetacold,theymaythink______.Howdidtherese
Accordingtoastudyauthor,whenpeoplewithapositiveemotionalstyledogetacold,theymaythink______.Whichofthefol
Theresultsofthenewstudyareunexpected.Allthosepeoplewhotookpartinthestudyreceivedvitaminsandminerals.
Anxietyaboutfinancialmatterlessenedsomewhatwhen,in1910,theUnitedStatesacceptedresponsibilityforLiberia’ssurvival
WhichofthefollowingstatementswouldBowlbysupport?Itissuggestedthatmodemsocietiesdifferfromtraditionalsocieties
Mr.Cousinsgotsickafterreturningfrom______.Whatdidn’tMr.Cousinsdoinhisexperimentswithlaughter?
HealthInsurance(保险)MostAmericansareresponsiblefortheirownmedicalcosts.Thesecanbeextremelyhighifapersonge
Thepassageismainlyabout______.Whatdoesthefollowingparagraphofthispassagemostlikelycontain?
IndustrialpollutionisnotonlyaproblemforthecountriesofEuropeandNorthAmerica.Itisanextremelyseriousproblemin
Maineisjustlyfamousforitsbeautifullakesandponds.
随机试题
斑马鱼和蝾螈等少数脊椎动物具有肢体和内脏器官再生的能力,比如成年斑马鱼的心室被切除20%后,其心脏组织在2个月内可完全再生。对于小鼠而言,在胚胎时期的第10~12天以及出生后的第4~14天左右,其心肌细胞可以分裂增殖,而成年小鼠的心肌细胞几乎已经不
邀请招标和公开招标在程序上的主要差异之一表现为()。
女性患者,28岁,出现意识障碍,查体见瞳孔缩小,该患者可能是
痰中带血不多见于
全国公路工程施工招标投标活动的监督管理由谁负责()
某企业2009年将以前年度进口的设备运往境外修理,设备进口时成交价格158万元,发生境外运费和保险费共计16万元;在海关规定的期限内复运进境,进境时同类设备价格165万元;发生境外修理费18万元,料件费19万元,境外运输费和保险费共计3万元,进口关税税率2
关于房地产开发项目成本控制的原则,说法错误的是()。
教师满堂灌输、学生呆读死记的注入式教学方法形成于()。
窗体上有名称为Command1的命令按钮,名称分别为List1、List2的列表框,其中List1的MuhiSelect属性设置为1(Simple),并有如下事件过程:PrivateSubCommand1_Click()Fori=
打开工作簿文件EXCEL.XLSX:(1)将Sheet1工作表的A1:D1单元格合并为一个单元格,内容水平居中;计算“总计”列、“优秀支持率”(百分比型,保留小数点后1位)列和“优秀支持率排名”(降序排名);利用条件格式的“数据条”下的“实心填充”修饰A2
最新回复
(
0
)