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
Humans are forever forgetting that they can’ t control nature. Exactly 20 years ago, a Time magazine cover story announced that
Humans are forever forgetting that they can’ t control nature. Exactly 20 years ago, a Time magazine cover story announced that
admin
2010-01-07
54
问题
Humans are forever forgetting that they can’ t control nature. Exactly 20 years ago, a Time magazine cover story announced that scientists are on the verge of being able to predict the time, place and even the size of earthquakes. "The people of quake-ravaged Kobe learned last week how wrong that assertion was."
None of the methods conceived two decades ago has yet to discover a uniform warning signal that preceded all quakes, let alone any sign that would tell whether the coming tremor is mild or a killer. Earthquake formation can be triggered by many factors, says Hiroo Kanamori, a seismologist at the California Institute of Technology. So, finding one all-purpose warning sign is impossible. One reason: Quakes start deep in the earth, so scientists can’ t study them directly. If a quake precursor were found, it would still be impossible to warn humans in advance of all dangerous quakes. Places like Japan and California are riddled with hundreds, if not thousands, of minor faults.
Prediction would be less important if scientists could easily build structures to withstand tremors. While seismic engineering has improved dramatically in the past 10 to 15 years, every new quake reveals unexpected weaknesses in "quake-resistant" structures, says Terry Tullis, a geophysicist at Brown University. In Kobe, for example, a highway that opened only last year was damaged. In the Northridge earthquake, on the other hand, well-built structures generally did not collapse.
A recent report in science adds yet more anxiety about life on the faulty lines. Researchers ran computer simulations to see how quake-resistant buildings would fare in a moderate-size tremor, taking into account that much of a quakes energy travels in a large "pulse" of focused shaking. The results: Both steel-frame buildings and buildings that sit on insulating rubber pads suffered severe damage.
More research will help experts design stronger structures and possibly find quake precursors. But it is still a certainty that the next earthquakes will prove once again that every fault cannot be monitored and every highway cannot be completely quake-proofed.
From what the author said in Para. 1, it can be inferred that ______ .
选项
A、scientists can never be able to predict the coming of earthquakes
B、the existing power on predicting earthquakes is somewhat exaggerated
C、quite a lot of scientific assertions are groundless
D、earthquake predictions are beyond the reach of scientists
答案
B
解析
从第一段最后一句可以看出。
转载请注明原文地址:https://kaotiyun.com/show/ruPd777K
本试题收录于:
公共英语四级笔试题库公共英语(PETS)分类
0
公共英语四级笔试
公共英语(PETS)
相关试题推荐
Besidesthefunctionsasavitalentertainmentmedium,whatelsecanpeopleuseaTVas?
Besidesthefunctionsasavitalentertainmentmedium,whatelsecanpeopleuseaTVas?
Ascientistoncesaid,"Ihaveconcludedthattheearthisbeingvisitedbyintelligentlycontrolledvehiclesfromouterspace."
Whowouldbemostinterestedintheadvancesmentionedinthetalk?
SomepeopleusedtosaythatDadhadsomanychildrenthathecouldn’tkeeptrackofthem.Dadhimselfusedto【1】astoryabouto
SomepeopleusedtosaythatDadhadsomanychildrenthathecouldn’tkeeptrackofthem.Dadhimselfusedto【1】astoryabouto
AnswerQuestions71to80byreferringtothecommentson4differentcarmodelsinthefollowingmagazinearticle.Answereach
Couldthebadolddaysofeconomicdeclinebeabouttoreturn?SinceOPECagreedtosupply-cutsinMarch,thepriceofcrudeoil
Couldthebadolddaysofeconomicdeclinebeabouttoreturn?SinceOPECagreedtosupply-cutsinMarch,thepriceofcrudeoil
随机试题
环磷酰胺类可引起明显的骨髓抑制,应定期复查血象,当白细胞降到下列水平时,应停药
A.RFB.抗CCPC.抗磷脂抗体D.抗心内膜抗体E.抗核抗体使SLE患者易形成动、静脉血栓的抗体是
关于破产清算、重整与和解的表述,下列哪些选项是正确的?()
以在建工程已完工部分抵押的,其土地使用权必须是有偿获得,并领有国有土地使用权证。()
以下关于联合体投标的表述中,正确的是()。
平均利息率计为4%,如果以2000万元的价格取得50年的土地使用权,则可知该地块的地租为每年()。
【中国银行】目前,北京市60岁以上的老年人已188万,占总人口的14.6%。据预测,到2025年,全市老年人口将达416万,占总人口的30%。(据2000年统计资料)到2025年,预计北京市老年人口比2000年增加了多少?()
下列说法不正确的是()。
AnewlookatanasteroidorbitingthesunshowsitcouldpossiblysmashintotheEarthwithtremendousforce.Butexpertssayt
A.forgeB.tracesC.privateD.fearE.puzzlesF.helpfulG.createsH.free
最新回复
(
0
)