写信(40points)
Writealetteraccordingtothefollowingsituation:theWenchuanearthquakehasmadethiswinterextremelydifficultforthevictims.WritetotellyourfriendSmiththatyouareraisingmoneytobuy200piecesofcotton-paddedclothingandsomeothernecessitiesfortheearthquakevictims.Askhimtojointhecharityandshowyourappreciationsforhishelp.Don’tforgettotellhimyourphonenumber555-5555forfurtherdiscussion.PleasesignyournameasLiPing.(150-200words)
Thecentraltheatrehasaseating________ofmorethan3,000people.
肺炎鼻导管给氧的方法是（）