首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到20条相似文献,搜索用时 15 毫秒
1.
1 我问她所有这些工作是她自己做的还是另有帮手。[误 ]Iaskedherwhethershehaddonealltheworkherselforshehadanyassistance .[正 ]Iaskedherwhethershehaddonealltheworkherselforwhethershehadanyassis tance .析 :两个表示选择的从句由or分开时 ,要重复whether这个词。再如 :Iwonderwhetherhe’llgohimselforwhetherhe’llsendafr…  相似文献   

2.
1 我昨天收到了父母亲的来信。误 :Iheardfrommyparents’letteryesterday.正 :Iheardfrommyparentsyesterday.析 :hearfrom意为“收到……来信” ,其后应以人作宾语而不用letter作宾语。letter作宾语时 ,谓语用receive。2 近来蔬菜价格太贵了。误 :Thepricesofthevegetablesaretooexpen siverecently .正 :Thepricesofthevegetablesaretoohighre cen…  相似文献   

3.
第一部分 :听力 (共两节 ,满分30分 )第一节 (共5小题 ;每小题1.5分 ,满分7.5分 )听下面5段对话。每段对话后有一个小题 ,从题中所给的A、B、C三个选项中选出最佳选项 ,并标在试卷的相应位置。听完每段对话后 ,你都有10秒钟的时间来回答有关小题和阅读下一小题。每段对话仅读一遍。1.Whydoesthemanfeelsorry?A.Becausehecan'tfollowthewoman.B.Becausehehastointerruptthewoman.C.Becausethewomanwalkst…  相似文献   

4.
INTRODUCTIONHemorrhagicfeverwithrenalsyndrome(HFRS)isanaturalfocaldiseasecausedbyvirusesintheHantavirusgenusofthefamilyBunyaviridae.AtleasteightserologicallydistinctHantaviruseswererecognized.HFRSisendemicinChinaandisonlycausedbyHantaanVirus(typeⅠ)trans…  相似文献   

5.
1IntroductionBecauseofthefastdevelopmentofeconomy,citiesarebecominglargerandlarger.Thetrafic,especialythepublictransportation...  相似文献   

6.
INTRODUCTIONPiezoelectricceramicmaterialshavemanyapplicationsinmoderntechnologiesbecauseoftheirexcellentpiezoelectricproperties.Butcracksarisingfromtheirintrinsicbrittlenessof tencausepiezoelectriccomponentsfailure .Studyofwhatcausesthisrequirestheoret…  相似文献   

7.
1 Introduction Eu3 :Y2 SiO5crystalisusedasanewluminescencematerial.Becausethenuclearmomentsofthecom positeelementsaresmallinthiscrystal,thespin spininteractionbetweenguestandhostionsisminimized .Theguest hostinteractiondoesnotcauselargeaddi tionallinebroade…  相似文献   

8.
1 Introduction Sincethe 90’s ,thefemtosecondlasertechniqueshavebeenusedtostudyvariousultra processwithinmaterials,becauseofitshightime resolution .Inchemicalreactions ,chemicalbondbreakingorbondformationisonthescaleoffemtosecond (10 - 15sec ond) [1] .Withfemtosecon…  相似文献   

9.
1IntroductionAswelknown,theelectricfurnaceisatimedelayinertial,variableparameterandnonlinearcontroledobject.Becauseoflimitati...  相似文献   

10.
Bird鸟1 .Heeatslikeabird .他吃得很少。2 .Abirdinthehandisworthtwointhebush .[谚 ]双鸟在林不如一鸟在手。3 We’reallearlybirdsinmyfamilybecauseweliveonafarm  相似文献   

11.
INTRODUCTIONManydatabaseapplications,suchastelecommunicationsindustry ,factoryautoma tion ,requirehighperformanceandreal timeac cesstodata .DRDBs(DiskResidentDatabase) ,however,areinadequatetomeetsuchrequire mentsbecauseofhighdiskaccessoverheadsfordataretrie…  相似文献   

12.
A New Potent Inhibitor of Thrombin from the Leech Haemendipsa Yanyuanensis   总被引:1,自引:0,他引:1  
1 Introduction Thrombusdiseaseofheartandbrainbloodvesselhasbecomeakillerofman .Becauseofthesideeffectsofhaemorrhageortheshorthalf lifeinvivo ,thepre sentanticoagulantdrugsareunsatisfied ,andsearch ingfornewanticoagulantswithhigherefficientandmorestabileha…  相似文献   

13.
1 Introduction Breastcancerisoneofthemostmalignantdiseases,especiallyforwomen.Anearlydetectioncansavelives,achievedbyearlydetectionwithmammograms.Itisanintensivetaskfortheradiologistbecausemultiplereadingsofasinglemammogramarenecessaryinordertoincre…  相似文献   

14.
INTRODUCTIONTheequilibriumbed concentration ,asthebedboundaryconditionforsolvingthedifferen tialequationofsuspendedloadisvitaltomath ematicalmodelingofsedimenttransport.Be causeofdifficultiesinmeasurementsofthebedconcentrationinthefieldandintheexperimen…  相似文献   

15.
1 我决定不参加会议。[误 ]Idecidedtonotattendthemeeting .[正 ]Idecidednottoattendthemeeting .[析 ]动词不定式的否定式是在to前面加not构成的。再如 :Trynottobelate .争取不要迟到。2 很抱歉 ,我星期四没能来。[误 ]I’msorrynottocomeonThursday .[正 ]I’msorrynottohavecomeonThurs day .[正 ]I’msorrythatIdidn’tcomeonThurs day .[析 ]如果不定式所…  相似文献   

16.
1 assoonas 引导时间状语从句时主句用一般将来时 ,从句用一般现在时。例如 :Assoonashecomes ,I’lltellhim .他一来我就告诉他。2 once例如 :You’llneverforgetitonceyouhaveheardthesong  相似文献   

17.
1IntroductionSincethe1950s,lanthanideβdiketonateshavebeenextensivelystudiedandwidelyapplied[1-3].Becauseofexcelentlaserprope...  相似文献   

18.
中学生英语常见错误20例析□临洮中学赵玉兰1You’dbetertelhimthenewsatonce.(正)You’dbetertotelhimthenewsatonce.(误)说明:hadbeter,wouldrather,can’tbut等惯...  相似文献   

19.
Teachertalk (TT)isofcrucialsignificanceforallclassrooms ,especiallytheEnglishlanguageteachingclassroom ,becauseinEnglishteaching (ET) ,languageisnotonlytheobjectiveofthecourse ,butalsothemediatoachievetheobjective.Boththeorga nizationoftheclassroomandtheproc…  相似文献   

20.
INTRODUCTIONFormostofthepast WorldWarⅡera,bankingregulationproceededsmoothly .Sincefewbankfailuresoccurred ,academicsandthepublicpaidlittleattentiontothetopic.Becauseofvariousfactors,bankfailureshavebecomecommonsincethe 1 980sandtheinternationalcommunityhas…  相似文献   

设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号