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
In 1991 Philippines witnessed the second largest volcanic eruption that hit an area with large population.
In 1991 Philippines witnessed the second largest volcanic eruption that hit an area with large population.
admin
2009-06-24
35
问题
In 1991 Philippines witnessed the second largest volcanic eruption that hit an area with large population.
The second-largest volcanic eruption of the 20th century, and by far the largest eruption to affect a densely populated area, occurred at Mount Pinatubo in the Philippines on June 15, 1991. The eruption produced high-speed massive falling of hot ash and gas, giant mudflows, and a cloud of volcanic ash hundreds of miles across. The impacts of the eruption continue to this day.
A huge cloud of volcanic ash and gas rose above Mount Pinatubo, Philippines, on June 12, 1991. Three days later, the volcano exploded in the second-largest volcanic eruption on Earth in this century. Timely forecasts of this eruption by scientists from the Philippine Institute of Volcanology and Seismology and the U.S. Geological Survey enabled people living near the volcano to evacuate to safer distances, saving at least 5,000 lives.
On July 16, 1990, a magnitude 7.8 earthquake (comparable in size to the great 1906 San Francisco, California, earthquake) struck about 60 miles (100 kilometers) northeast of Mount Pinatubo on the island of Luzon in the Philippines, shaking and squeezing the Earth’s crust beneath the volcano. At Mount Pinatubo, this major earthquake caused a landslide, some local earthquakes, and a short-lived increase in steam emissions from a pre-existing geothermal area, but otherwise the volcano seemed to be continuing its 500-year-old sleep undisturbed. In March and April 1991, however, molten rock rising toward the surface from more than 20 miles beneath Pinatubo triggered small earthquakes and caused powerful steam explosions that blasted three outlets on the north flank of the volcano. Thousands of small earthquakes occurred beneath Pinatubo through April, May, and early June, and many thousand tons of noxious sulfur dioxide gas were also emitted by the volcano. Following Mount Pinatubo’s disastrous eruption on June 15, 1991, thou sands of roofs collapsed under the weight of ash made wet by heavy rains. Ash deposits from the eruption have also been remobilized by monsoon and typhoon rains to form giant mudflows of volcanic materials, which have caused more destruction than the eruption itself.
Nearly 20 million tons of sulfur dioxide were injected into the upper atmosphere in Pinatubo’s 1991 eruptions, and dispersal of this gas cloud around the world caused global temperatures to drop temporarily (1991 through 1993) by about 1 degree. The eruptions have dramatically changed the face of central Luzon, home to about 3 million people. About 20 000 indigenous Aeta highlanders, who had lived on the slopes of the volcano, were completely displaced, and most still wait in resettlement camps for the day when they can return home. About 200,000 people who evacuated from the lowlands surrounding Pinatubo before and during the eruptions have returned home but face continuing threats from lahars that have already buried numerous towns and villages. Rice paddies and sugar-cane fields that have not been buried by lahars have recovered; those buried by lahars will be out of use for years to come.
选项
A、Right
B、Wrong
答案
A
解析
由独白第三段第一句至第三句可知,这次火山爆发是由1990年7月的一次地震激发的,因此题句是正确的。
转载请注明原文地址:https://kaotiyun.com/show/FwTd777K
本试题收录于:
公共英语五级笔试题库公共英语(PETS)分类
0
公共英语五级笔试
公共英语(PETS)
相关试题推荐
AlaskaIn1959AmericanswelcomedAlaskaintotheUnionasthe49thstate,symbolizingachangeofattitudefromthatheldi
GenerationGapAfewyearsago,itwasfashionabletospeakofagenerationgap,adivisionbetweenyoungpeopleandtheire
SurveyFoundManyWomenMisinformedAboutCancerSixty-threepercentofAmericanwomenthinkthatifthere’snofamilyhist
MypianoplayinghasimprovedsignificantlysinceIhadanewteacher.
WhichstatementisNOTtrueofone-liners?Whatchangedfrom1968to1996?
Accordingtothepassage,whichofthefollowinghaschangedthemostinthelast500years?ThousandsofIrishpeoplestarved
NewFoodsandtheNewWorldInthelast500years,nothingaboutpeople--nottheirclothes,ideas,orlanguages--haschanged
TheproblemoverapyrightprotectionTheUSSupremeCourthasjuststeppedintoapublicdebateabouttherelationshipbetweenp
TheproblemoverapyrightprotectionTheUSSupremeCourthasjuststeppedintoapublicdebateabouttherelationshipbetweenp
Threeworld-classtennisplayerscametocontendforthistitle.
随机试题
下列表述中,属交接箱内电缆安装原则范围的是:()
成人缺铁性贫血的主要原因是( )
使用化学消毒剂的注意事项中,下列哪一项是错误的()
某企业采用计划成本进行材料的日常核算。2007年12月,月初结存材料计划成本为300万元,本月收入材料计划成本为700万元;月初结存材料成本差异为超支2万元,本月收入材料成本差异为节约10万元;本月发出材料计划成本为800万元。本月结存材料的实际成本为(
下列关于当事人进行财产权利出质时的做法中,错误的是()。
凡成本总额在一定时期和一定产量范围内不随产量变化而变化的成本。称为()。
Socialchangeismorelikelytooccurinsocietieswherethereisamixtureofdifferentkindsofpeoplethaninsocietieswhere
Twotothreetimesmorepeopledieinalcohol-relatedvehiclecrashesduringthattimethanduringcomparableperiodstheresto
请判断下列对事件1中出现的问题进行责任认定的正确性(填写对或错)。A.监理单位、承建单位、建设单位共同分担责任B.监理单位不承担责任C.属于承建单位违约,承建单位应支付违约金,如造成损失还应支付赔偿金D.监理单位应承担部分责
设有如下事件过程:PrivateSubCommand1_Click() Dima a=Array(12,3,8,5,10,3,5,9,2,4) Fork=1To9 Printfun(a(k-1),a(
最新回复
(
0
)