smokedwithsatisfaction.Mywifewasdelightedthatthingshadreturnedtonormaloncemore.Anyway,asBrianpointedout,itistheeasiestthingintheworldtogiveupsmoking.Hehimselfhasdoneitlotsoftimes!Lesson79Byair乘飞机IusedtotravelbyairagreatdealwhenIwasaboy.Myparents,usedtoliveinSouthAmericaandIusedtoflytherefromEuropeintheholidays.AnairhostesswouldtakechargeofmeandIneverhadanunpleasantexperience.IamusedtotravellingbyairandonlyononeoccasionhaveIeverfeltfrightened.Aftertakingoff,wewereflyinglowoverthecityandslowlygainingheight,whentheplanesuddenlyturnedroundandflewbacktotheairport.Whilewewerewaitingtoland,anair-hostesstoldustokeepcalmandtogetofftheplanequietlyassoonasithadtoucheddown.Everybodyonboardwasworriedandwewerecurioustofindoutwhathadhappened.Laterwelearntthattherewasaveryimportantpersononboard.Thepolicehadbeentoldthatabombhadbeenplantedontheplane.Afterwehadlanded,theplanewassearchedthoroughly.Fortunately,nothingwasfoundandfivehourslaterwewereabletotakeoffagain.Lesson80TheCrystalPalace水晶宫PerhapsthemostextraordinarybuildingofthenineteenthcenturywastheCrystalPalace,whichwasbuiltinHydeParkfortheGreatExhibitionof1851.TheCrystalPalacewasdifferentfromallotherbuildingsintheworld,foritwasmadeofironandglass.Itwasoneofthebiggestbuildingsofalltimeandalotofpeoplefrommanycountriescametoseeit.Agreatmanygoodsweresenttotheexhibitionfromvariouspartsoftheworld.Therewasalsoagreatdealofmachineryondisplay.ThemostwonderfulpieceofmachineryonshowwasNasmyth'ssteamhammer.Thoughinthosedays,travellingwasnotaseasyasitistoday,steamboatscarriedthousandsofvisitorsacrosstheChannelfromEurope.OnarrivinginEngland,theyweretakentotheCrystalPalacebytrain.Thereweresixmillionvisitorsinall,andtheprofitsfromtheexhibitionwereusedtobuildmuseumsandcolleges.Later,theCrystalPalacewasmovedtoSouthLondon.Itremainedoneofthemostfamousbuildingsintheworlduntilitwasburntdownin1936.Lesson81Escape脱逃Whenhehadkilledtheguard,theprisonerofwarquicklydraggedhimintothebushes.Workingrapidlyinthedarkness,hesoonchangedintothedeadman'sclothes.Now,dr