Passage4
Questions 16to 20arebasedonthefollowingpassage:
Morethan30,000driversandfrontseatpassengersarekilledorseriouslyinjuredeachyear.Atthespeedofonly30milesperhouritisthesameasfallingfromathird-floorwindows.Wearingaseatbeltsaveslives;itreducesyourchanceofdeathorseriousinjurybymorethanhalf.
Thereforedriversorfrontseatpassengersover14inmostvehiclesmustwearaseatbelt.Ifyoudonot,youcouldbefinedupto£50.itwillnotbeuptothedriverstomakesureyouwearyourbelt.Butitwillbethedriver’sresponsibilitytomakesurethatchildrenunder14donotrideinthefrontunlesstheyarewearingaseatbeltofsomekind.
However,youdonothavetowearaseatbeltifyoureversingyourvehicle;oryouaremakingalocaldeliveryorcollectionusingaspecialvehicle;orifyouhaveavalidmedicalcertificatewhichexcusesyoufromwearingit.Makesurethesecircumstancesapplytoyoubeforeyoudecidenottowearyouseatbelt.(76)Rememberyoumaybetakentocourtfornotdoingso,andyoumaybefinedifyoucannotprovetothecourtthatyouhavebeenexcusedfromwearingit.
1.Thistextistakenfrom________.
A)amedicalmagazineB)apolicereport
C)alegaldocumentD)agovernmentinformationbooklet
2.Wearingaseatbeltinavehicle________.
A)reducesroadaccidentsbymorethanhalf
B)savesliveswhiledrivingataspeedupto30milesperhour
C)reducesthedeathrateintrafficaccidentsD)savesmorethan15,000liveseachyear
3.Itisthedriver’sresponsibilityto________.
A)makethefrontseatpassengerwearaseatbelt
B)makethefrontseatchildrenunder14wearaseatbelt
C)stopchildrenridinginthefrontseatD)wearaseatbelteachtimehedrives
4.Accordingtothetext,whichofthefollowingpeopleridinginthefrontdosnothavetowearaseatbelt?
A)Someonewhoisbackingintoaparkingspace.
B)Someonewhoispickingupthechildrenfromthelocalschool.
C)Someonewhoisdeliveringinvitationletters.
D)Someonewhoisunder14.
5.Forsomepeople,itmaybebetter________.
A)towearaseatbeltforhealthreasons
B)nottowearaseatbeltforhealthreasons
C)togetvalidmedicalcertificatebeforewearingaseatbelt
D)topayafineratherthanwearaseatbelt
A 方有一对密钥( KA 公开 ,KA 秘密),B 方有一对密钥( KB 公开,KB 秘密),A 方向 B 方发送数字签名 M,对信息 M 加密为: M’= KB 公开(KA 秘密 (M))。B 方收 到密文的解密方案是___。
以下哪个是 ARP欺骗攻击可能导致的后果?
PKI支持的服务 不包括___。
以下对于网络中欺骗攻击的描述哪个是不正确的?
PKI/CA 技术不能解决信息传输中的问题
在 ISO 的 OSI 安全体系结构中,以下哪一个安全机制可以提供抗抵赖安全服务?
PKI 在验证数字证书时,需要查看来确认
确保信息没有非授权泄密, 即确保信息不泄露给非授权的个人、实体或进程, 不为其所用,是指( )
IPSec 协议的 AH子协议不能提供下列哪一项服务?
以下哪一项不是工作在网络第二层的隧道协议