简介:一、用作介词1.表示时间,意为“……以前”,反义词为after,后面多接时间点。例:Myfatherusuallygetsupbeforefiveo’clockinthemorning.我父亲早上通常在五点前起床。Youmustwashyourhandsbeforemeals.饭前你们必须洗手。
简介:Peoplemayhurther,neglecther,andmisunderstandher,yetstillsheloves.Herlovereachesoutintendemess,inempathy,inunderstanding.Andsheis-Mother.
简介: Before被用作连词时,通常表示"在……之前".如:①I'lldoitnowbeforeIforgetit.趁我还没有忘记,现在就做.……
简介:ChineseEconomyBeforetheYear2000BystaffreporterLIJIANGUOTHECHINESEgovernmenthasdecidedtoslowdownitsyearafterthecountryhasjustw...
简介:<正>Yugoslavia’saccessiontoGATThadundergoneseveralstages:in1950,GATTacceptedYugoslaviaasanobserver;onMay16,1959,YugoslaviaproclaimedtoacceptthegeneralprinciplesandguidingprinciplesofGATTandagreedtodeveloptraderelationshipwithotherGATTmembersonthisbasis,andrequestedthepreferentialtreatmentasGATTmembers
简介:信息技术进课堂是教学模式的变革。但对于多年教学形成习惯的教师来说利用新技术探索新的教学模式是一场新的挑战。教师通过一系列的短语、句子学习和记忆练习,为学生的说打基础;及时的检测和实时反馈使教师能够随时根据学生的掌握情况做出教学内容的调整;自主听力根据对不同层次学生的要求使学生的不同学习要求得到满足。利用'电子书包'解决这些问题使课堂效率得到很大提高。
简介:ObjectivesToinvestigatepre-andpost-totalmiddleearreconstructionbacteriologicalchangesinordertofacilitatepreventionandtreatmentofsurgicalinfections.MethodsSpecimensfrom128earsin124patientswithproblematicmastoidcavitieswhounderwentrevisiontotalmiddleearreconstructionwerestudied.ResultsBacteriologicaltestswerepositivein87(68.0%)pre-operativespecimens,despitelocaltreatment,andin74(57.8%)specimenscollected10daysafteroperation.Commonorganismstrainsinpre-andpost-operativespecimenswereslightlydifferentandincluded:coagulase-staphylococcus,GRAM+rods,staphylococcusaureus,pseudomonasaeruginosaandfungi.Atthetimeofpatientdischarge(15-20dayspost-operative),only3ears(2.3%)weretestedpositivewhichrespondedwelltoandbecamedryafterlocaltreatment.Atoneyear,4ears(3.1%)showedrecurrentotorrheawhichagainrespondedtolocaltreatment.ConclusionForinfectionofproblematicmastoidcavitiesafteranopencavityprocedure,revisiontotalmiddleearreconstructioniseffectiveincontrollinginfectionandpromotingadryear.Infectionpreventionandtreatmentisimportantconsideringtherelativelyhighratesofperi-operativelocalinfections.