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
Drought occurs when moistures disappear through evaporation faster than it is replaced by rain. A drought may happen in any clim
Drought occurs when moistures disappear through evaporation faster than it is replaced by rain. A drought may happen in any clim
admin
2010-04-12
18
问题
Drought occurs when moistures disappear through evaporation faster than it is replaced by rain. A drought may happen in any climate zone from tropical to tundra (土地带). Some of the worst drought of this century occurred in the mid-1980s in the sahel region of West Africa when the summer rains failed.
Water shortages can also affect the countries of Europe as happened in 1976 when Britain faced the worst drought in its history, coupled with temperatures rising up past 30℃.
One of the greatest droughts of modern times occurred in the Midwest United States between 1934 and 1941. The causes of the disaster were not entirely natural as unwise fanning practices also played a part. During the First World War, farmers expanded their fields to take advantage of soaring wheat prices.
After the war, prices fell again, however, and large numbers of cattle were turned into the ploughed fields. Millions of hooves(蹄) crumbled the soil and the winter winds blew it away. From 1934 drought conditions made matters worse. Dust lifted up from the land in 300-metre high clouds that swept over farms and suffocated animals in storms that lasted for days. In the summer, desert heat baked the land in conditions that were too much even for rattlesnakes to survive. Nineteen states felt the effects of the drought.
What did the expansion of fields in the First World War lead to?
选项
A、A serious drought.
B、A reduction in price.
C、Soaring wheat prices.
D、Extinction of rattlesnakes.
答案
A
解析
细节推理题。从第三段第二句我们可以得知一战中的农耕地扩张是人为原因造成干旱的例子,第四段给我们较为详细地介绍了战后的相关情况。
转载请注明原文地址:https://kaotiyun.com/show/POk7777K
0
大学英语四级
相关试题推荐
A、Heknowsherfromtheirelementaryschoolscienceclass.B、Sheknowshimfromcomputerscienceclass.C、Theywenttothesame
A、Studying.B、Playingcards.C、Preparingsnacks.D、Learninghowtoplaybridge.C[听力原文]Howdoesthewomanplantospendhereve
A、Towork.B、Onholiday.C、Toaparty.D、Toalecture.AW:I’msorry,Ican’tmeetyouonSunday.Mybosswantsmetodoovertim
A、Shethinksitisunacceptablethatthemanhavedamagedherplasticflowers.B、Shewantstogetridoftheseflowerssooner.C
A、It’saproblemnotyetsolved.B、It’saquestiondifficulttoanswer.C、It’samatterthatishiddenorsecret.D、It’salegen
Peoplewhosufferfromalcoholabusehaveaphysicaldependenceonalcohol.Howquicklythealcoholisabsorbeddependsupon__
Ithasbeenprovenmanytimesthatfarmersfarmtheirownlandmorecarefullyandproductivelythantheycultivatesomeoneelse’
A、Thatdrugsshouldnotbeusedwithoutdoctors’advice.B、Thatdrugsandsubstancesaredifferent.C、Thatsubstancesshouldbe
Yourlossesintradethisyeararenothing______(与我的相比)。
Notmanyoftheelementsoccurinnatureaspuresubstances,lyingaroundwaitingforsomeonetopickthemup.Afewdo,andit
随机试题
下列不属于“一行两会”的是()
设A为n阶矩阵,且|A|=0,A≠0,则AX=0的通解为________.
男,60岁,左侧腹股沟可复性疝,坠入阴囊5年,经常咳嗽近一个月来有排尿困难尿潴留和便秘,最适当的治疗方法是
《关于改革土地估价结果确认和土地资产处置审批办法的通知》(国土资发[2001]44号)规定,土地行政主管部门要加强对土地估价结果进行确认。()
案例一:在一次初中思想品德教学研讨会议上,李老师执教“依法保护我们的家园”这堂课。在导入课题时,她营造了“小鸟在荒原上飞行”这样一个动画情景,并抒情地解说:“小鸟(口里含了一封信)孤独地在寂寞的荒原上盘旋,它在干什么呢?它在寻找自己的家!它要给人类朋友捎封
TheSilkBoadwasapassageforthetransportationofsilkinancienttimes.Lotsofreliesontheroadcanstill【B1】________(s
作为一个拥有五千年不间断文明史的古国,我国拥有十分丰富的非物质文化遗产。这些活态的文化不仅构成了中华民族深厚的文化底蕴,也承载着中华民族文化渊源的基因。但随着我国现代化建设的加速,文化标准化以及环境条件的变化,尚有不计其数的文化遗产正处于濒危状态,它们犹如
商誉评估值的高低与企业为形成商誉而投入的费用()。
在日常生活中,像婉转的告诫、含蓄的言辞、辛辣的讽喻等,都很注意留下意思上的空白让听话人自己去领会、补充,这种现象可以用________________或________________来概括。
设有关系R(S,D,M),其函数依赖集F={S→D,D→M}。则关系R至多满足______。
最新回复
(
0
)