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
Tornadoes, whirlwinds, and water-sprouts are rotating funnel cloud air masses of small diameters. They are differentiated by the
Tornadoes, whirlwinds, and water-sprouts are rotating funnel cloud air masses of small diameters. They are differentiated by the
admin
2010-06-30
35
问题
Tornadoes, whirlwinds, and water-sprouts are rotating funnel cloud air masses of small diameters. They are differentiated by the intensities of their rotation and by the surfaces that they traverse. Though tornadoes and whirlwinds both travel over land masses, whirlwinds are atmospheric systems smaller than tornadoes. Water-sprouts are tornadoes that form or pass over a water surface. A tornado is a powerful vortex or "twister" whose rotational speeds are estimated to be near 300 miles per hour. The first visible indication of tornado development is usually a funnel cloud. As this funnel dips earthward, it becomes darker because of the debris that is forced into its intensifying vortex. Some tornadoes give no visible warning until their destruction strikes the unsuspecting victim. Tornadoes often occur in groups, and several twisters sometimes descend from the same cloud base. The forward speed of a tornado is normally 30 to 40 miles per hour. In the short time that it takes to pass, a tornado can cause fantastic destruction. There have been cases reported in which blades of straw were embeded in fence posts.
The author refers to straw embeded in fence posts in order to show ______.
选项
A、where tornadoes occur
B、who makes reports about tornadoes
C、when tornadoes take form
D、how tornadoes affect physical objects
答案
D
解析
前面文中提到龙卷风能造成巨大破坏,然后提到龙卷风使稻草嵌入栅栏柱上的例子,作者的意图当然是要强调龙卷风在物体上作用有多么强大。
转载请注明原文地址:https://kaotiyun.com/show/sqJd777K
本试题收录于:
公共英语四级笔试题库公共英语(PETS)分类
0
公共英语四级笔试
公共英语(PETS)
相关试题推荐
AccordingtotheAmericanAcademyofDermatology,anestimated10to50millionpeopleinthiscountryhaveanallergicreaction
AccordingtotheAmericanAcademyofDermatology,anestimated10to50millionpeopleinthiscountryhaveanallergicreaction
Couldthebadolddaysofeconomicdeclinebeabouttoreturn?SinceOPECagreedtosupply-cutsinMarch,thepriceofcrudeoil
InJanuary1995,theworldwitnessedtheemergenceofanewinternationaleconomicorderwiththelaunchingoftheWorldTradeO
Thepassageischieflyabout______.WhichofthefollowingistrueabouttheNavyunderwaterlisteningnetwork?
Whatdowomen’sliberationgroupsinBritaindowithgraffiti?
Heroinaddictionstodayisfoundchieflyamongyoungmenofminoritygroupsinghetto(犹太人区)areas.Ofthemorethan60,000known
Minority-ownedbusinessintheUnitedStateshadunprecedentedopportunitiesaswellasnewandsignificantrisks.Civilrights
Tornadoes,whirlwinds,andwater-sproutsarerotatingfunnelcloudairmassesofsmalldiameters.Theyaredifferentiatedbythe
Tornadoes,whirlwinds,andwater-sproutsarerotatingfunnelcloudairmassesofsmalldiameters.Theyaredifferentiatedbythe
随机试题
施工放样的原则是()。
在司汤达的小说中,深刻反映了。1825至1830年间王政复辟后期法国尖锐复杂的政治斗争和“19世纪最初三十年间……历届政府所带来的社会风气”的作品是()
功能润肺止咳的药物有
A.格列齐特B.阿卡波糖C.控制饮食,增强体育运动D.使用一种口服降糖药E.双胍类药物新诊断的糖尿病采用
期末结账时,有余额的账户结出余额,在“借”或“贷”一栏中表明余额方向;没有余额的账户,在“借”或“贷;一栏中写______,在金额栏中写______。
关于借款合同的变更与解除,下列说法错误的是()。
下列有关薪资设定的表述,正确的是()。
根据中外合资经营企业法律制度的规定,下列选项中,中外合资经营企业合营一方转让出资额必须符合的条件有()。
注册会计师在确定被审计单位寄销在外地的存货是否存在时,采取的下列方法中恰当的有()。
现在所说的“导游”概念,下面表述正确的是()。
最新回复
(
0
)