2009职称英语--完型填空文章--冲刺班讲义(理工类专用)

1理工类...................................................................................................................................................................................1一级重点（2010年新增文章）..................................................................................................................................1第一篇AvalancheandItsSafety（C）.....................................................................................................1第二篇TakingaNapDuringtheDay（B）...............................................................................................2二级文章（题库未考查文章）...................................................................................................................................4CaptainCookArrowLegend.................................................................................................................................4CarThievescouldBeStoppedRemotely..............................................................................................................5ChinatohelpEuropeDevelopGPSRival.............................................................................................................6WonderWebs.........................................................................................................................................................7三级文章（已考查）...................................................................................................................................................8Animal'sSixthSense（C）.............................................................................................................................8SingingAlarmsCouldSavetheBlind（C）......................................................................................................9AnIntelligentCar（C）.....................................................................................................................................9ABiologicalClock（C）..................................................................................................................................10LessIsMore（B）............................................................................................................................................11理工类一级重点（2009年新增文章）第一篇AvalancheandItsSafety（C）Anavalancheisasuddenandrapidflowofsnow,oftenmixedwithairandwater,downamountainside.Avalanchesare1thebiggestdangersinthemountainsforbothlifeandproperty.Allavalanchesarecausedbyanover-burdenofmaterial,typicallysnowpack,thatistoomassiveandunstablefortheslope2supportsit.Determiningthecriticalload,theamountofover-burdenwhichis3tocauseanavalanche,4acomplextaskinvolvingtheevaluationofanumberoffactors.Terrainslopesflatterthan25degreesorsteeperthan60degreestypicallyhavealow5ofavalanche.Snowdoesnot6significantlyonsteepslopes;also,snowdoesnot7easilyonflatslopes.Human-triggeredavalancheshavethegreatestincidencewhenthesnow'sangleofrestis835and45degrees;thecriticalangle,theangleatwhichthehumanincidenceofavalanchesisgreatest,is38degrees.Theruleofthumbis:Aslopethatis9enoughtoholdsnowbutsteepenoughtoskihasthepotentialtogenerateanavalanche,regardlessoftheangle.Additionally,avalancheriskincreaseswith10;thatis,themoreaslopeisdisturbedbyskiers,themorelikelyitisthatanavalanchewilloccur.Duetothecomplexityofthesubject,wintertravellinginthebackcountryisnever100%safe.Goodavalanchesafetyisacontinuous11,includingrouteselectionandexaminationofthesnowpack,weather12,andhumanfactors.Severalwell-knowngoodhabitscanalso13therisk.Iflocalauthoritiesissueavalancheriskreports,theyshouldbeconsideredandallwarningsshouldbepaid14to.Neverfollowinthetracksofotherswithoutyourownevaluations;snowconditionsarealmostcertaintohavechangedsincetheyweremade.Observetheterrainandnoteobviousavalanchepathswhereplantsare15ordamaged.Avoidtravelingbelowotherswhomighttriggeranavalanche.练习：1.AamongBofCtoDin2.AwhenBthatCwhoDwhose3.AmostlyBlikelyCclearlyDsurely4.AareBwillbeCisDwas5.AweightBformCriskDwork6.AfallBflowCrollDgather27.AfallBflowCrollDgather8.AamongBbetweenCwithDfor9.AthickBthinCflatDrocky10.AuseBtimeCsnowDrain11.AjourneyBtripCfactDprocess12.AconditionsBreportsCforecastDevent13.AincreaseBreduceCimproveDremove14.ApriceBeffortCattentionDmoney15.AmissingBgrownCbigDfresh雪崩和安全问题雪崩是雪掺杂着空气和水沿着山体突然迅猛地滑动造成的。雪崩是造成山区人们生命和财产安全的最大危险之一。所有雪崩都是由于物质的过渡负荷造成，通常是积雪堆积过厚，很不稳固，超出了山坡面的承载能力。要确定山坡的临界承载量，可能造成突然雪崩的负荷量是一项很复杂的任务，需要衡量多个因素。通常倾斜度小于25度，大于60度的山坡发生雪崩的危险要小一些。积雪不会在陡峭的山坡上大量堆积，同样也不会在平缓的山坡上快速滑动。当雪在静止状态下的角度在35_45度之间，最可能发生人为触发的雪崩。人为引发雪崩的临界角度是38度，是最易人为引发雪崩的角度。常规经验是：一个平缓的足以堆积积雪，同时陡峭的适合人们滑雪的山坡，无论角度如何，都有可能产生雪崩。此外，雪崩的危险随着使用的增加而增加，换言之，滑雪者活动得越频繁，雪崩的可能性越大。由于雪崩研究的复杂性，冬天在人烟稀少的地区旅行从来不是百分之百的安全。很好地躲避雪崩，保持安全是一个连续的过程，包括选择路线、检查积雪、了解天气状况及其他人为因素。以下几个广为人知的好习惯也可以降低风险：如果当地权威部门发布了雪崩警报，你应当予以考虑，加以注意。绝不要不加审度，就立刻接受他人意见。积雪自形成的那时就几乎注定要发生变化。认真观察地形，注意明显的雪崩路径：没有植物或植物被毁坏的地方。不要在那些可能引发雪崩的人或事物下面行走。答案：ABBCCDBBCADABCD第二篇TakingaNapDuringtheDay（B）MedicalexpertssaymostAmericansdonotget1sleep.TheysaymoreAmericansneedtorestforashortperiodinthemiddleoftheday.Theyareadvisingpeopletosleeplightlybefore