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
Shooting molten rock more than 500 meters into the air, Etna sent streams of lava rushing down its northeastern and southern fla
Shooting molten rock more than 500 meters into the air, Etna sent streams of lava rushing down its northeastern and southern fla
admin
2017-04-21
75
问题
Shooting molten rock more than 500 meters into the air, Etna sent streams of lava rushing down its northeastern and southern flanks. The eruption was accompanied by hundreds of earthquakes measuring up to 4.3 on the Richter scale. As a huge plume of smoke and ash drifted across the Mediterranean Sea, residents of Linguaglossa(the name means "tongues" of lava)tried to ward off the lava flows by parading a statue of their patron saint through the town’s streets.【R1】______. But the episode was unnerving because it was so similar to an erratic eruption on the volcano’s southern flank in the summer of 2001 that destroyed parts of a tourist complex and threatened the town of Nicolosi. Some of the lavas discharged in both events were of an unusual type last produced in large amounts at the site about 15,000 years ago.【R2】______.
The Sicilians living near Mount Etna have long regarded the volcano as a restless but relatively friendly neighbor.【R3】______. But now some researchers believe they have found evidence that Etna is very gradually becoming more dangerous. It is unlikely that Etna will explode like Mount Saint Helens in the near future, but fierce eruptions may become more common.
【R4】______. Extensive reports and legends record about 3,000 years of the volcano’s activity, but a reliable chronicle has been available only since the 17th century. Most of the earlier accounts are limited to particularly violent eruptions, such as those occurring in 122 B.C. and A.D. 1169, 1329, 1536 and 1669. During the eruption in 1669, an enormous lava flow buried part of the city of Catania before pouring into the sea.
With a surface area of approximately 1,200 square kilometers, Etna is Europe’s largest volcano. Its 3,340-meter-high peak is often covered with snow.【R5】______. Blocks of this material are occasionally caught in the magma — the molten rock moving upward—and ejected at the surface. Numerous blocks of white sandstone were blown out during the 2001 and 2002 eruptions. This phenomenon occurs whenever magma must open new paths for its ascent, as is usually the case with lateral eruptions(those that occur on the volcano’s flanks).
The volcano is more than 500,000 years old. Remnants of its earliest eruptions are still preserved in nearby coastal regions in the form of pillow lavas, which emerge underwater and do in fact look like giant pillows.【R6】______. Today a much steeper cone rests on the ancient shield volcano. It consists of at least five generations of volcanic edifices that have piled up during the past 100,000 to 200,000 years, each atop the remnants of its eroded or partly collapsed predecessor.【R7】______. Among Etna’s special features are the hundreds of small cinder cones scattered about its flanks. Each marks a lateral outbreak of magma.【R8】______.
A. Only the upper 2,000 meters consists of volcanic material; the mountain rests on a base of sedimentary rock beds.
B. Perhaps because of divine intervention, nobody was hurt and damage was not widespread.
C. The name of "Etna" is derived from an old Indo-Germanic root meaning "burned" or "burning".
D. At first, a shield volcano — so called because it resembles a shield placed face-up on the ground — grew in a depression in the area where Etna now stands.
E. One of the world’s most productive volcanoes, Etna has spewed about 30 million cubic meters of igneous material each year since 1970, with a peak eruption rate of 300 cubic meters a second.
F. At that time, a series of catastrophic eruptions led to the collapse of one of Etna’s predecessor volcanoes.
G. Though persistently active, Etna has not had a major explosive eruption — such as the devastating 1980 event at Mount Saint Helens in Washington State — for hundreds of years.
H. The present-day cone has been built in the past 5,000 to 8,000 years.
【R3】
选项
答案
G
解析
前一句讲了居民们认为尽管火山活动频繁,但是它还表现得相对友善。G句讲到:“尽管火山一直在活动,但在近百年中并没有大的突然的喷发。”与前一句连接很紧密,是前一句的进一步的补充说明。
转载请注明原文地址:https://kaotiyun.com/show/SX9d777K
本试题收录于:
BFT阅读题库国际化人才外语考试(BFT)分类
0
BFT阅读
国际化人才外语考试(BFT)
相关试题推荐
YougotaletterrequestinginformationfromAndrewPhilips,themarketingmanagerofLinguaServicesLtd.
HereisanadvertisementaboutforacertainpositioninthenewspaperofDec.7,2005.Readtheadvertisementandcompletethe
Readthefollowingarticleandanswerquestions9~18onthenextpage.Happy75thBirthday,SocialSecurit
Readthefollowingpassageandchoosethebestwordforeachspace.Moneyspentonadvertisingismoneyspentaswellasany
Amulticulturalpersonissomeonewhoisdeeplyconvincedthatallculturesareequallygood.【R1】______Andmostlikelyhehasbe
Experimentshaveshownthatinselectingpersonnelforajob,interviewingisatbestahindrance,andmayevencauseharm.Thes
NolongerdomostofEurope’sundergraduateswanttodirtytheirhandsproducingthingsorprovidingservicestocustomers.【R1】_
ANUNUSUALSWIMMINGCLUBMembersofaspecialclubinBritaincheerfullyleavethewarmthCHEERoftheirbeds,
ADoctorintheHouseBrushingyourteethtwiceadayshouldkeepthedentistaway.Butifagroupofscientificresearchers
随机试题
A.白细胞数5×106/L,淋巴细胞为主,蛋白0.3g几,糖3.5mmol/LB.白细胞数50×106/L,淋巴细胞为主,蛋白1.0g/L,糖1.5mmol/LC.白细胞数5×106/L,中性粒细胞为主,蛋白1.0g/L,糖3.5mmol/L
下列物质的熔点由高到低排列顺序正确的是:
【背景】某施工企业承建的某综合楼工程位于某城市的商业中心地段,17层,框架结构,建筑面积56000m2,施工现场占地面积为30000m2。【问题】1.简述施工总平面图设计原则。2.简述施工总平面图设计的步骤。3.简述施工总
小王是某税务机关工作人员,因业务素质不足,导致少征税款10万元。根据刑事法律制度的规定,小王的行为()。
根据增值税进项税额的规定,纳税人因进货退回或折让而收回的增值税税额,应从下期发生的进项税额中冲减。()
甲公司是一家软件企业,产品为财务系统软件,主要客户是中小企业。最近该公司在为一家印度客户提供产品时,由于系统内使用了未经授权的其他公司产品,而遭到印度相关部门的高额罚款。从企业环境来讲,这属于()。
“九州缩地凭挥翰,四海披图当泛槎(木筏)”。这是近代诗人张维屏对一部著述的称赞。这部著述是()。
A.I’dliketoknowyourhealthbenefitandpayscaleB.youwantanexperiencedsoftwareengineerC.Ihavedesignedsomeprogr
有三个关系R、S和T如下:则由关系R和S得到关系T的操作是()。
(1)"LikeFlorenceintheRenaissance."ThatisacommondescriptionofwhatitisliketoliveinSiliconValley.America’st
最新回复
(
0
)