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、They are very frightening and powerful. B、They are interested in tornadoes. C、They all work very hard. D、They don’t know why t
A、They are very frightening and powerful. B、They are interested in tornadoes. C、They all work very hard. D、They don’t know why t
admin
2017-06-29
33
问题
The winds of a tornado are the most violent and destructive ones on Earth. Any of you who have seen one knows very well how frightening and powerful they are. [9]What’s interesting about them is that scientists don’t actually know exactly why tornadoes occur.
We do know, however, what happens when tornadoes are formed. As you remember, a front occurs [10]when cool, dry air from the north meets warm, humid air coming from the south. Where these air masses meet, a narrow zone of storm clouds develops, and thunderstorms, and sometimes tornadoes, occur.
How is this violent weather produced? Well, a mass of warm, humid air rises very rapidly. As it rises, more warm air rushes in to replace it. This inrushing air also rises, and in some cases, especially when there is extreme thermal instability, begins to rotate. When this happens, the rotating air forms a tornado.
Even if you’ve seen tornadoes only in movies, you know that they can destroy buildings in seconds. This is possible because when a tornado passes over a house, it sucks up air from around the house and so the air pressure outside the house drops rapidly. Inside, pressure remains the same. [11]So, air pressure inside is greater than air pressure outside. The result is that the building explodes outward. Next, we’ll talk a little bit about how new technological developments are being used to try to predict tornadoes.
9. What does the sneaker say about the scientists?
10. In what way does a narrow zone of storm clouds develop?
11. What will happen to a building when air pressure inside is greater than outside?
选项
A、They are very frightening and powerful.
B、They are interested in tornadoes.
C、They all work very hard.
D、They don’t know why tornadoes occur.
答案
D
解析
原文提及“有趣的是,科学家并不清楚龙卷风具体是如何形成的。”故D正确。
转载请注明原文地址:https://kaotiyun.com/show/gjU7777K
0
大学英语六级
相关试题推荐
Ahappymarriageapparentlyisgoodmedicine,buthostilespousesmay【B1】______oneanother’shealthCouplesinconflict-ridden
A、Itdisturbsthelocalpeoplewithnoises.B、Itcausesthedamageonthepavement.C、Itstopspeopleandcarsmovingfreely.D、
A、Lastweek.B、Threeweeksago.C、Twomonthsago.D、Threeyearsago.B细节题。文章详细说明了购物中心的情况:花费三年打造,终于在三个星期前正式营业,比预期晚了两个月,故选B。由选项可知,
Onecalledherbossa"bitchfromhell"whileanotheradmitted"lyingthroughhisteeth"atinterview.BoththeBritishjobappl
Largecompaniesneedawaytoreachthesavingsofthepublicatlarge.Thesameproblem,【B1】______,facespracticallyeveryco
A、Jogging.B、Swimming.C、Tennis.D、Cycling.C根据原文,调查显示,人们提到的第三个最受欢迎的运动是网球。故答案是C。四个选项都是体育运动,初步猜测题目和参与的运动有关。根据原文,四个选项都有被提到,按照受欢迎的程
A、Dead.B、Unlucky.C、Powerful.D、Victorious.B根据传说,当神或女人佩戴“光之山“,将拥有全世界。而佩戴它的男人将遭遇不幸,因此B项是正确选择。A项太绝对,录音中提到佩戴“光之山”的男人难逃厄运(meetan
I’minterestedinthecriminal【B1】______systemofourcountry.Itseemstomethatsomethinghastobedone,ifwe’reto【B2】____
随机试题
FIDIC施工合同条件规定,为了合理分担市场价格浮动变化对施工成本影响的风险,在合同内要约定调价方法。如因承包的原因发生工程延误,在后续支付时,( )。
某项建设工程未经竣工验收,发包人擅自使用,则竣工日期为()
下列不属于资产评估委托合同内容的是()。
李某当年稿酬收入应纳的个人所得税为( )元。李某转让字画应纳的个人所得税是( )元。
甲公司向乙公司签发并交付一张票据,乙公司又向丙公司背书转让了该票据,后丙公司再次向丁公司转让了该票据。经银行审核,乙公司在向丙公司转让该票据时,其签章不符合规定。对此,下列说法正确的是()。
能够有效地消除国际重复征税的办法是()。
今天是星期六,10100天后是星期几?
国民党的反动政策及国统区政治、经济危机。
PeopleilltheUnitedStatesandCanadaoftenshakehandswhentheymeeteachother.This.handshakeisnotthesameasthehmld
Ithinkanafternoonintheopenairwilldousgood,________?
最新回复
(
0
)