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
Prior to the formation of a tornado, ______.
Prior to the formation of a tornado, ______.
admin
2012-09-13
32
问题
Prior to the formation of a tornado, ______.
One of the most feared occurrences in nature is the tornado. The area most frequently the target of this violent windstorm is the Great Plains, the region extending from the Rockies to the Mississippi, and from Canada down through Texas. When warm, moist air meets with cooler, drier air at low levels, a tornado often occurs. Prior to the formation of the familiar funnel-shaped cloud, the sky is very clear. Then, a black line suddenly appears. As this black area moves in, the fast wind becomes hot and moist and a deep stillness encircles the landscape. Because the area pressure drops steadily during a tornado, breathing becomes difficult. Insects fall to the ground, unable to balance themselves in flight. Suddenly, a black funnel resembling a giant whip dips down out of the sky, destroying what it touches, and then retreats. Although a tornado usually destroys property rather than lives, an average of 120 people die yearly as a result of these violent storms. It is obvious why the tornado is feared throughout the Great Plains.
选项
A、The wind becomes fast and hot.
B、Air pressure gets steadily lower.
C、The black area moves closer.
D、They are knocked to the ground.
答案
B
解析
转载请注明原文地址:https://kaotiyun.com/show/rohK777K
0
专业英语四级
相关试题推荐
Intheworldofentertainment,TVtalkshowshaveundoubtedlyfloodedeveryinchofspaceondaytimetelevision.Andanyonewho
Shegave______directionsaboutthewaytherugshouldbecleaned.
Alltheinformationwehavecollectedinrelationtothatcase______verylittle.
ItisnotthefirsttimethatI______byhimduringmycooperationwithhim.
Soilqualityisoneofthemostbasicandperhapsleastunderstoodindicatorsoflandhealth.Soilsupportsplantgrowthandrep
Anincreasingproportionofourpopulation,unabletolivewithoutadvancedmedical______,willbecomeprogressivelymorerelian
Once______,theinformationsuperhighwaywilldrasticallychangethelifestyleofalltheresidentsonthisisland,
Surprisinglyenough,modernhistorianshaverarelyinterestedthemselvesinthehistoryoftheAmericanSouthintheperiodbefo
Doctorsareinterestedinusinglasersasasurgicaltoolinoperationsonpeoplewhoare______toheartattack.
随机试题
A,陶弘景B,赵学敏C,李时珍D,唐慎微E,苏敬《本草纲目》的作者是()
红细胞比容是指红细胞()。
编制概算时,对室外工程总图专业应提交下列()资料。
下列选项对英国化学家玻意耳的成就描述错误的是()。
有关部门对120种抽样食品进行化验分析,结果显示,抗氧化剂达标的有68种,防腐剂达标的有77种,漂白剂达标的有59种,抗氧化剂和防腐剂都达标的有54种,防腐剂和漂白剂都达标的有43种,抗氧化剂和漂白剂都达标的有35种,三种食品添加剂都达标的有30种,那么三
当铃声由中性刺激物转化为食物的信号刺激,意味着动物建立了()
不管使用何种方式输入的汉字,其最终存储在计算机内部的是______。
Whowillmostlikelyattendthemeeting?
Onlymomentsafterannouncingapolicyofzerotoleranceoncellphoneuseintheclassroom,AliNazemiheardaring.Nazemi,ab
Inorderto(attain)ourobjective,itis(essential)thatwe(willmake)thebestuseofthelimitedresources(available).
最新回复
(
0
)