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
2023-08-25
33
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、Where dry and humid air masses meet.
B、Where the air becomes warm and humid.
C、When thunderstorms or tornadoes occur.
D、When the air rises very rapidly.
答案
A
解析
原文提及“当来自北方寒冷干燥的空气与来自南方温暖湿润的空气相遇,锋面形成。当这些气团相遇,一个狭窄的暴风云区也形成。”故A正确。
转载请注明原文地址:https://tihaiku.com/zcyy/2955403.html
相关试题推荐
[originaltext]W:John,doyouliketogoswimmingatthepoolwithmetoday?I’
[originaltext]W:John,doyouliketogoswimmingatthepoolwithmetoday?I’
[originaltext]W:John,doyouliketogoswimmingatthepoolwithmetoday?I’
[originaltext]W:John,doyouliketogoswimmingatthepoolwithmetoday?I’
[originaltext]M:Hi,Ann,welcomeback.How’syourtriptotheStates?W:Very
[originaltext]M:Hi,Ann,welcomeback.How’syourtriptotheStates?W:Very
[originaltext]M:Lasttimewetalkedaboutthehistoryofpaper,Butdoyoukno
[originaltext]M:Lasttimewetalkedaboutthehistoryofpaper,Butdoyoukno
[originaltext]W:Hi,Mike.I’mgoingtogiveapresentationonWinstonChurchil
[originaltext]W:Hi,Mike.I’mgoingtogiveapresentationonWinstonChurchil
随机试题
()长城()巴比伦空中花园[br]()巴黎圣母院()故宫I、M
YouarenowtheproudowneroftheAFZoom-Nikkor,alensthatwillprovideyou
Parentscaneasilycomedownwithanacutecaseofschizophreniafromreadin
测试耐碱性不用的仪器是()。A.量杯 B.烧杯 C.天平 D.电子秒
2010年年初甲公司以分期付款方式购入一台设备,价款分5年于每年年末支付100万
品德是个体依据一定的社会道德行为规范行动时表现出来的心理特征和倾向,它是(
某建筑施工企业为适应市场环境的变化,重新设计了公司的组织系统。在此过程中可以使用
判断图19中电压表的读值()。A、1V B、3V C、6V D、9V
A.呼气性呼吸困难,双肺普遍哮喘音 B.端坐呼吸,双肺底水泡音 C.呼气性呼
()是政府推行赤字财政政策扩张经济的必然结果。A.主动赤字 B.被动赤字
最新回复
(
0
)