首页
登录
职称英语
[originaltext] The winds of a tornado are the most violent and destructive o
[originaltext] The winds of a tornado are the most violent and destructive o
游客
2024-04-26
7
管理
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. 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 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. 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.
16. What does the speaker say about the scientists?
17. In what way does a narrow zone of storm clouds develop?
18. What will happen to a building when air pressure inside is greater than outside?
选项
A、It will remain the same.
B、Its air will be sucked up.
C、It will explode outward.
D、It will move a little.
答案
C
解析
原文提及“当内部气压大于外部气压时,建筑物会向外爆炸。”故C正确。
转载请注明原文地址:https://www.tihaiku.com/zcyy/3571668.html
相关试题推荐
[originaltext]WhenpeopletalkaboutAmericanpopularmusic,theydon’tjus
[originaltext]WhenpeopletalkaboutAmericanpopularmusic,theydon’tjus
[originaltext]InBritain,justafterthemaintelevisionnewsprogrammes,a
[originaltext]InBritain,justafterthemaintelevisionnewsprogrammes,a
[originaltext]W:Dr.Thomas?ThisisKeetBradleyfromthedailynews.I’dlike
[originaltext]W:Dr.Thomas?ThisisKeetBradleyfromthedailynews.I’dlike
[originaltext]W:Dr.Thomas?ThisisKeetBradleyfromthedailynews.I’dlike
[originaltext]W:Dr.Thomas?ThisisKeetBradleyfromthedailynews.I’dlike
[originaltext]M:Whatdidyousayyouweregoingtotakeupasacareer?W:Law
[originaltext]W:IliketakingphotographsbutIhaven’tgotavideocamera.M:
随机试题
Bankingisaboutmoney;andnootherfamiliarcommodity(商品)arousessuchex
[originaltext]W:Igotacouponforhalf-offdinneratthenewrestaurantdown
A单位于1980年8月经批准取得8500m2土地建五层商业楼,后由于资金紧张,于
A.引起过敏反应的食品 B.饮水不足 C.蛋白质供给不足,维生素A和维生素C
下列关于商业银行审计外包的说法,错误的是( )。A.可将全部内部审计职能外包
A.生姜 B.干姜 C.炮姜 D.薄荷 E.高良姜具有温中回阳功效的药物
上交所股票A发布2015年分红公告,向全体股东每10股送10股,每10股派发现金
下列有关防火卷帘设置正确的是()。A.当防火分隔部位的宽度不大于30m时,防火
关于社会工作研究方法的说法,正确的有()。A.实验研究中,研究者必须要采用标准
甘遂配牵牛子可用于治疗( ) A.实热积滞,燥屎坚结 B.脘腹冷痛,大便秘
最新回复
(
0
)