Ifasubstanceisdissolvedinwaterorheated，itmay（）agas.
TEXTD
Personalityis，tolargeextent,inherent--A-typeparentsusuallybringaboutA-typeoffspring.Butthe
environmentmustalsohaveaprofoundeffect,sinceifcompetitionisimprotanttotheparents,itislikelytobecomeamajorfactorlivesoftheirchildren.OneplacewherechildrensoakupAcharacteristicsisschool,whichis,byitsverynature,ahighlycompetitiveinstitution.Toomanyschoolsadoptthe"winatallcosts"moralstandardandmeasuretheirsuccessbysportingachievements.Thecurrentpassionformakingchildrencompeteagainsttheirclassmatesoragainsttheclockproducesatwo-layersystem,inwhichcompetitiveAtypesseeminsomewaybetterthantheirB-typefellows.Beingtookeentowincanhavedangerousconsequences:rememberthatPheidippides,thefirstmarathonrunner,droppeddeadsecondsaftersaying:"Rejoice,weconquer!".Byfartheworstformofcompetitioninschoolisthedisproportionateemphasisonexaminations.Itisarareschoolthatallowspupilstoconcentrateonthosethingstheydowell.Themeritsofcompetitionbyexaminationaresomewhatquestionable,butcompetitioninthecertainknowledgeoffailureispositivelyharmful.Obviously,itisneitherpracticalnordesirablethatallAyoungsterschangeinto'B's.Thewouldneedstypes,andschoolshaveanimportantdutytotrytofitachild'spersonalitytohispossiblefutureemployment.Itistopmanagement.16.Accordingtotheauthor,whatfactorscontributetothebuildingofpersonality?
A.inheritance
b.inheritance,competitionandenvironment
c.competition
d.environment
17.Whichofthefollowingstatementsisnottrueaccordingtotheauthorofthepassage?
A.Schoolsusuallyadoptseverecompetitivepolicies.
B.Studentsareoftendividedbycompetitionresults.
C.Schoolisplacewherechildrencultivatetheircharacteristics.
D.Thestrongerdesireforwinning,thebetter.
18.Thephrase"soakup"isclosestinmeaningto____.
A.pullup
b.takeup
c.takein
d.pullin
19.Whatattitudedoestheauthorholdtowardexaminationsinschools?
A.positive
b.negative
c.doubtful
d.neutral
20.whatsuggestiondoestheauthormakeconcerningthemanagementofschools?
A.AllstudentsbemadeintocompetitiveAtypes.
B.Achild'spersonalitybeconsideredinregardtohispossiblefuturejob.
C.AllstudentsbechangedintoBcharacteristics.
D.Schoolsabolishallformsofexaminations.
WhenthepoliceofficerswhotookpartintheKingbeatingwerefirstbroughtto___________,theirlawyersusedthevideotapeasevidenceagainsttheprosecution.