Model Test Nine

《Model Test Nine》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。

1、ModelTestNinePartⅠWriting（30minutes）Directions：Forthispart，youareallowed30minutestowriteashortessayentitledObsessionwithOnlineGames.Youshouldwriteatleast120wordsfollowingtheoutlinegivenbelow：1.大学生迷恋网络游戏的现象较为普遍2.产生这种现象的原因是什么3.如何才能减少大学生对网络游戏的迷恋注意：在实考中，此部分试题在答题卡1上。ObsessionwithOnlineGamesPartⅡReadingCo

2、mprehension（SkimmingandScanning）（15minutes）Directions：Inthispart，youwillhave15minutestogooverthepassagequicklyandanswerthequestionsonAnswerSheet1.Forquestions1~7，markY(forYES)ifthestatementagreeswiththeinformationgiveninthepassage;N(forNO)ifthestatementcontradictstheinformationgiveninthepassage;NG(f

3、orNOTGIVEN)iftheinformationisnotgiveninthepassage.Forquestions8~10，completethesentenceswiththeinformationgiveninthepassage.DNAEvidenceWhatiftherewereawayoftyingapersontothesceneofacrimebeyondashadowofadoubt？Or，moreimportantly，whatifyoucouldruleoutsuspectsandpreventthewrongpersonfrombeinglockedupinja

4、il？ThisdreamisbeginningtoberealizedthroughtheuseofDNAevidence.YourOwnPersonalBarcodeWeallliketothinkthatweareunique，notlikeanyoneelseintheworld.Unlessyouareanidenticaltwin，atthenuclearlevel，youare！Humanshave23pairsofchromosomescontainingtheDNAblueprintthatencodesallthematerialsneededtomakeupyourbody

5、aswellastheinstructionsforhowtorunit.Onememberofeachchromosomalpaircomesfromyourmother，andtheotheriscontributedbyyourfather.EverycellinyourbodycontainsacopyofthisDNA.WhilethemajorityofDNAdoesntdifferfromhumantohuman，some3millionbasepairsofDNA（about0.10percentofyourentiregenome）varyfrompersontoperso

6、n.ThekeytoDNAevidenceliesincomparingtheDNAleftatthesceneofacrimewithasuspectsDNAinthesechromosomalregionsthatdodiffer.CreatingaDNAProfileThebasicprocedureusedtoisolateanindividualsDNAfingerprintiscalledRestrictionFragmentLengthPolymorphism（RFLP）analysis.Thisisacomplicatedwayofsayingthatinvestigato

7、rsdeterminethenumberofVNTRrepeatsatanumberofdistinctiveareastocomeupwithanindividualsDNAprofile.Foreachperson，therearetwonumbersofrepeatsineachVNTRregion（onefrommomandonefromdad），soyouaregettingbothc