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 watersprouts are rotating funnel cloud air masses of small diameter. They are differentiated by the i
Tornadoes, whirlwinds, and watersprouts are rotating funnel cloud air masses of small diameter. They are differentiated by the i
admin
2010-01-26
32
问题
Tornadoes, whirlwinds, and watersprouts are rotating funnel cloud air masses of small diameter. They are differentiated by the intensity 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. Watersprouts 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
这道题要求考生进行分析。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,所以四个选项中很容易找出正确答案。
转载请注明原文地址:https://jikaoti.com/ti/jhsMFFFM
0
大学英语六级
相关试题推荐
Whileservingasatrackcoach,Bowermantriedtodesignrunningshoesthatwere______.DuringhisvisittoJapan,Knightconv
Whatisthepassagemainlyconcerned?Whatarethethreewaysinwhichmasstransportationrevisedthesocialandeconomicfabr
A、Aprofessionalwindowcleaner.B、Automotivesalesperson.C、Servicestationattendant.D、Grocerystoremanager.CW:Pleasechec
TheBushadministrationhasagreedtospeedeffortstoprotecttwenty-ninekindsofanimalsandplantsthataremostindangero
Willyoubeableto___________________(使他转而支持我们的观点)?
WhatcanpeopleknowfromthecrownofanancienttreefoundinNewYork?Whywasitpossiblefortheseancienttreesletmore
A、Theresidents.B、Thepassers.C、Thesoldiers.D、Thepolice.DWhorescuedthefourpersonsatlast?
A、Jogging.B、Tennis.C、Cycling.D、Swimming.BWhichsportwascitedasthethirdmostpopular?综合推断题。男士指出,在体育运动上表现最为活跃的两组人最喜欢的
A、Michael’sparentsgotdivorced.B、KarenwasadoptedbyRayAnderson.C、Karen’smotherdiedinacaraccident.D、Atruckdriver
随机试题
按板材厚度规定,薄板厚度在________之间。
患者女性,67岁,心脏听诊可闻及重叠型奔马律,该患者可能是
男,36岁,心悸、怕热、手颤、乏力1年,大便不成形,每天3-4次。体重下降11.5kg。查体:P90次/分,BP128/50mmHg,皮肤潮湿,双手细颤,双眼突出,甲状腺弥漫性肿大,可闻及血管杂音,心率104次/分,律不齐,心音强弱不等,腹平软,肝脾肋下未
有形席位是属于一种场外报盘,它无需证券公司派驻场内交易员,而由证券公司的电脑交易系统直接向证券交易所电脑主机发送买卖证券的指令。()
下列属于房地产投资项目经济评价静态指标的是()。
简述加涅的学习结果分类。
It’sclearthatanonymoussocialnetworksaregrowingquickly:Whisperhasdrawn2.5billionpageviewsamonth.whileSecrethas3
依据民政部《志愿服务记录办法》,志愿服务记录遵循及时、完整、准确、安全原则。()
索引是数据库中重要的数据结构,关于索引现有下列说法:Ⅰ.在某个查询中带排序的属性有多个时可以考虑在这些属性上建立复合索引Ⅱ.一个表中最多只能有一个主索引或聚集索引Ⅲ.多属性索引中,索引属性的顺序一般按照属性的长度进行排列Ⅳ.在频繁更新的属性上建立索
在进行窗体设计过程,不能切换进入的视图是()。
最新回复
(
0
)