阅读下列短文，然后根据短文的内容从每小题的四个选项中选出最佳的一项，并把它前面的大写字母填入左边的括号里。
{{B}}A{{/B}}

plEAsE BE ADvisED thAt nAiroBi likE Any othEr lArgE City hAs A sECurity AnD CrimE proBlEm. howEvEr, iF you oBsErvE thE Following simplE guiDElinEs you will stAy AnD hAvE A trouBlE-FrEE sEminAr (研讨会): 1.Do not wEAr A monEy BElt. this mAkEs you An instAnt tArgEt. 2.CAmErAs oF All kinDs ArE A FAvoritE with snAtChErs. FEEl FrEE to usE thEm within thE stArEhECAmpus AnD thE hotEl grounDs But not in thE strEEts. 3. lADiEs hAnDBAgs ArE Also A rEgulAr snAtCh.AvoiD CArrying onE, AnD iF you must, BE AlErt AnD holD on to it tightly. 4. jEwEllEry AnD EvEn glAssEs with vAluABlE FrAmEs ArE Also oFtEn tArgEtED、BEAr this in minD、 5. whEn in A vEhiClE kEEp thE Doors AlwAys loCkED, AnD thE winDows only slightly opEn --EspECiAlly At trAFFiC lights, junCtions AnD in slow moving trAFFiC、 6.BEwArE oF strEEt ChilDrEn, thEir BEgging oFtEn quiCkly trAnsForms into somEthing morE unplEAsAnt. 7. stAy with thE mAin pArty All thE timE, AnD AvoiD wAnDEring oFF on your own. 8. FinAlly, thE BEst DEFEnCE is to BE AlErt At All timEs AnD ConsCious oF your EnvironmEnt. shoulD you hAvE Any proBlEm, quEry or nEED hElp At Any hour oF thE DAy or night CAll Any oF thE Following AnD thEy will Do thEir BEst For you: oFFiCE、FixED、homE、FixED、moBilE phonE 1 kEnnEDy hongo 763856/761221 763182 0733 761294 2 FrED、okono 761221 764988 0733 604490 3EDwin otiEno 761221 761642/763011 072 701279

thE notiCE tElls us thAt ______.A．somEthing unplEAsAnt CoulD hAppEn to you iF you usE A CAmErA During thE sEminAr
B．lADiEs must not wEAr A hAnDBAg or Any jEwEllEry
C．in thE hotEls oF nAiroBi, it might BE DAngErous to stAy in A singlE room
D．EvErything will BE ok iF you AlwAys wAtCh out AnD ArE ClEAr ABout thE surrounDings