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简介：玩游戏之前，先聆听光碟，留意图画及相关英文生词的读音。在字阵中找出并删去下列生词，然后把余下的字母填写在横线上。

简介：小朋友们，在快乐聊天室里，你有任何英语学习上的疑问，不论是学习方法，还是学习难点，通通可以来信告诉我们，我们会邀请各方专家、老师为你提供建议和解答哦。来信请寄：上海市阜新路20弄1号27楼C室，《英语角·英文小读者》编辑部秋天姐姐收，邮编：200092。秋天姐姐的E-mail：qiutianjiejie@126。com。

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简介：Thepresentworkisaimedtostudythepharmacokineticparametersofoptimizedrepaglinidefloatingdrugdeliverysystem(FDDS)by24factorialdesigns,followedbycomparisonwithacommerciallyavailableformulation.Themaineffectsandinteractionsofformulationvariableswerestudiedbyusingnormalandparetocharts.Theoptimizedformulationshowsafickiandiffusiondrugreleasemechanism.Pharmacokineticparametersofthedesigneddrugdeliverysystemwereevaluatedinrabbitmodels.Meanwhileasimple,specifichighperformanceliquidchromatographicmethodwasdevelopedandvalidatedasperbiopharmaceuticalspecifications,thelinearitywasobservedattherangeof110-550ng/mL(r2=0.999).Byusingmethanol-phosphatebuffer(pH2.5)(70:30,v/v)asmobilephaseattheflowrateof1.0mL/minthevalidationshowsabetterretentiontimeof5.2minforrepaglinide.AndthesamevalidationmethodwasusedforpharmacokineticprofileanalysisofrepaglinidemarketedproductsandFDDS.Thecomparativepharmacokineticresultssuchastmax,half-life,areaunderthecurve,meanresidencetimeswereincreasedsignificantlyfortherepaglinideinFDDSthanthemarketedproductofrepaglinideexceptCmaxandeliminationrateconstant.

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简介：Sphere-likemesoporousCdSnanocrystalswithhighcrystallinityandbigsurfaceareaweresuccessfullyfabricatedbyultrasoundirradiationatroomtemperature.Theas-synthesizedCdSwithandwithoutultrasoundirradiationwasinvestigatedbythecharacterizationsofX-raydiffraction(XRD),scanningelectronmicroscopy(SEM),transmissionelectronmicroscopy(TEM),andBrunauer-Emmett-Teller(BET)surfaceareas.ThephotocatalyticactivityoftheCdSwasevaluatedbyphotocatalyticdegradationofmethylorangeundervisiblelight(λ>420nm)irradiation.ApossiblemechanismfortheformationoftheCdSnanocrystalswithmesoporousstructureunderultrasoundirradiationwasproposed.TheresultsshowthatboththetemplateroleofthetriblockcopolymerofP123andtheeffectofultrasound-inducedaggregationaremainlyresponsiblefortheformationofmesoporousstructure.Ontheotherhand,theenergygeneratedfromacousticcavitationcaneffectivelyacceleratethecrystallizationprocessoftheamorphousCdS.

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简介：【教材简析】Couldyoupleasecleanyourroom？SectionBla-2c是人教版新目标Goforit!Students’Book八年级上册Unitll的第三课时。本单元围绕“makepoliterequestandask.forpermissionpolitely”的话题进行教学活动，