英语四级阅读理解训练集(40篇)!
5.Thewirefeeltothefloor_______.
a.becauseMrs.Clarkerefusedtoopenthedoor
b.whentheman'sglovedroppedoff
c.becauseitwastoohottohold
d.becausethemanjustwantedtogetaway
17/200答案：cadbd
大学英语四级阅读理解试题40篇之十八（含答案）
18/200
Manypeoplebelievetheglarefromsnowcausessnowblindnenss.Yet,darkglassesornot,theyfindthemselvessufferingfromheadachesandwateringeyes,andevensnowblindness,whenexposedtoseveralhoursof"snowlight".
TheUnitedStatesArmyhasnowdeterminedthatglarefromsnowdoesnotcausesnowblindnessintroopsinasnow-coveredcountry.Rather,aman'seyesfrequentlyfindnothingtofoucsoninabroadexpanseofbarrensnow-coveredterrain.Sohisgazecontinuallyshiftsandjumpsbackandforthovertheentirelandscapeinsearchoftsomethingtolookat.Findingnothing,hourafterhour,theeyesneversotpsearchingandtheeyeballsbecomesoreandtheeyemusclesache.Natureoffsetsthisirritationbyproducingmoreandfluidwhichcoverstheeyeball.Thefluidcoverstheeyeballinincreasingquantityuntilvisionblurs,thenisobsured,andtheresultistotal,eventhoughtemporary,snowblindness.
ExperimentsledtheArmytoasimplemethodofovercomingthisproblem.Scoutsaheadofamainbodyoftroopsaretrainedtoshakesnowfromevergreenbushes,creatingadottedlineastheycrosscompletelysnow-coveredlandscape,Eventhescoutsthemselvesthrowlightweight,darkcoloredobjectsaheadonwhichtheytoocanfocus.Themenfollowingcanthenseesomething.Theirgazeisarrested.Theireyesfocusonabushandhavingfoundsomethingtosee,stopscouringthesnow-blanketedlanscape.Byfocusingtheirattentionononeobjectatatime,themencancrossthesnowwithoutbecominghopelesslysnowblindorlost.Inthiswaytheproblemofcrossingasolidwhiteterrainisovercome.
1.Topreventheadaches,wateringeyesandblindnesscausedbytheglarefromsnow,darkglassesare_____.
a.indispensible
http://www.70edu.comeful
c.ineffective
d.available
2.Whentheeyesaresoretearsareproducedto________.
a.clearthevision
b.remedysnowblindness
c.easetheirritation
d.loosenthemuscles
3.Snowblindnessmaybeavoidedby_______.
a.concentratingtothesolidwhiteterrain
b.searchingforsomethingtolookatinsnow-coveredterrain
c.providingtheeyeswithsomethingtofoucson
d.coveringtheeyeballswithfluid
4.Thescoutsshakesnowfromevergreenbushesinorderto_______.
a.bivethemenbehindsomethingtosee
b.beautifythelandscape
c.warmthemselvesinthecold
d.preventthemenbehindfromlosingtheirway
