His manner was so pleasant that Bolla felt at （）with him at once.
C
「句意」他那平易近人的风度使得博拉立刻放松了情绪。
「难点」atpeace意为“和平地”;atlarge意为“自由地;大体地”;atease意为“不拘束”;atbest意为“至多”。
Ifasubstanceisdissolvedinwaterorheated，itmay（）agas.
PARTVREADINGCOMPREHENSION
Inthissectiontherearefourpassagesfollowedbyquestionsorunfinishedstatements,eachwithfoursuggestedanswersmarkedA,B,CandD.Choosetheonethatyouthinkisthebestanswer.
TEXTA
Racket,dinclamor,noise,whateveryouwanttocallit,unwantedsoundisAmerica'smostwidespread
nuisance.Butnoiseismorethanjustanuisance.Itconstitutesarealandpresentdangertopeople'shealth.Day
andnight,athome,atwork,andatplay,noisecanproduceseriousphysicalandpsychologicalstress.Nooneis
immunetothisstress.Thoughweseemtoadjusttonoisebyignoringit,theear,infact,neverclosesandthe
bodystillresponds—sometimeswithextremetension,astoastrangesoundinthenight.
Theannoyancewefeelwhenfacedwithnoiseisthemostcommonoutwardsymptomofthestressbuilding
upinsideus.Indeed,becauseirritabilityissoapparent,legislatorshavemadepublicannoyancethebasisof
manynoiseabatementprograms.Themoresubtleandmoreserioushealthhazardsassociatedwithstress
causedbynoisetraditionallyhavebeengivenmuchlessattention.Nevertheless,whenweareannoyedormade
irritablebynoise,weshouldconsiderthesesymptomsfairwarningthatotherthingmaybehappeningtous,
someofwhichmaybedamagingtoourhealth.
Ofmanyhealthhazardstonoise,hearinglossisthemostclearlyobservableandmeasurablebyhealth
professionals.Theotherhazardsarehardertopindown.Formanyofus,theremaybeariskthatexposuretothe
stressofnoiseincreasessusceptibilitytodiseaseandinfection.Themoresusceptibleamongusmayexperience
noiseasacomplicatingfactorinheartproblemsandotherdiseases.Noisethatcausesannoyanceandirritability
inhealthpersonsmayhaveseriousconsequencesforthesealreadyillinmindorbody.
Noiseaffectsusthroughoutourlives.Forexample,thereareindicationsofeffectsontheunbornchildwhen
mothersareexposedtoindustrialandenvironmentalnoise.Duringinfancyandchildhood,youngstersexposed
tohighnoiselevelsmayhavetroublefallingasleepandobtainingnecessaryamountsofrest.
Why,then,istherenotgreateralarmaboutthesedangers?Perhapsitisbecausethelinkbetweennoiseand
manydisabilitiesordiseaseshasnotyetbeenconclusivelydemonstrated.Perhapsitisbecausewetendto
dismissannoyanceasapricetopayforlivinginthemodernworld.Itmayalsobebecausewestillthinkof
hearinglossasonlyanoccupationalhazard.
1.InParagraph1,thephrase"immuneto"areusedtomean___.
A.unaffectedby
B.hurtby
C.unlikelytobeseenby
D.unknownby
2.Theauthor'sattitudetowardnoisewouldbestbedescribedas___.
A.unrealistic
B.traditional
C.concerned
D.hysterical
3.Whichofthefollowingbeststatesthemainideaofthepassage?
A.Noiseisamajorproblem;mostpeoplerecognizeitsimportance.
B.Althoughnoisecanbeannoying,itisnotamajorproblem.
C.Noiseisamajorproblemandhasnotyetbeenrecognizedassuch.
D.Noiseisamajorproblemaboutwhichnothingcanbedone.
4.Theauthorcondemnsnoiseessentiallybecauseit___.
A.isagainstthelaw
B.canmakesomepeopleirritable
C.isanuisance
D.inagangertopeople'shealth
5.Theauthorwouldprobablyconsiderresearchabouttheeffectsnoisehasonpeopletobe___.
A.unimportant
B.impossible.
C.awasteofmoney
D.essential
At______,photographyisachemicalprocess,duringwhichalight-sensitivematerialisalteredwhenexposedtolight.