优良菌种的标准是什么?

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正确答案:

各种食用菌菌种,既有特定的质量标准,也有共同的质量标准。这些共同的质量标准主要是纯、壮两条。

⑴纯:除银耳菌种,其余各种栽培食用菌均是一种菌丝体的纯培养物,不得混入杂菌或纯培养物以外的其它菌种。例如:香菇7925菌种,只能是7925菌株菌丝体的纯培养。第一、不得混入毛霉、根霉、曲霉、木霉等任何霉菌或细菌、病毒;第二、也不得混入平菇、金针菇等其它食用菌的菌丝体;第三、也不得混入香菇7925菌株以外的任何一种香菇菌菇。

⑵壮:菌种长相正常、长势旺、再生能力强。

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SectionB

Directions:Therearetenblanksinthefollowingletter.YouarerequiredtochoosethebestonefromthegivenfourchoicesmarkedA,B,C,andD.Thenwritedownthecorrectanswerinthebrackets.Thissectiontotals10points,onepointforeachblank.

DearMr.Bush

Thankyouforyour1ofJanuary5forourBeautyBrandBlouses.

Wearenowexporting2ofvariousbrands,amongwhichBeautyBrandisthemostfamous.Theyareingreat3abroadandourstocksarerunning4quickly.Theyarepopularnotonlyfortheirnoveldesign,butalsoforthereasonableprices.Weareconfidentthatonceyouhavetriedourblouses,youwillplacerepeatorderswithus5largequantities.

Asyourequested,wearenow6asfollows:

Price:US$600perdozenCIFNewYork

TermsofPayment:BysightL/Ctobeopenedthroughabanktobe7bytheSellers.

Shipment:InMarch2007.

Pleasenotethatwedonotallowanycommission8ourblouses,butadiscountof5%maybe9ifthequantityismorethan1,000dozen.

Theaboveofferismadewithout10andissubjecttoourfinalconfirmation.

Wehopethatyouwillplaceanorderwithusatanearlydate.

Sincerelyyours

()1.A.requestB.enquiryC.acquisitionD.requirement

()2.A.blousesB.womanblousesC.womanshirtsD.ladyshirts

()3.A.needB.wantC.requireD.demand

()4.A.upB.offC.downD.away

()5.A.atB.forC.inD.with

()6.A.orderingB.offeringC.placingD.advising

()7.A.agreedB.approvedC.acceptableD.covered

()8.A.onB.inC.ofD.at

()9.A.providedB.suppliedC.furnishedD.granted

()10.A.promiseB.dutyC.engagementD.onus

Thegoodsarepackedincartonsinterlinedwith________material.

A、water-proved
B、water-protected
C、water-proof
D、water-tight

Childcarevouchers

We _____ your terms satisfactory and now send you our order for 2 sets of Electric Motors.

A、find
B、believe
C、think
D、trust 

Howshopscanexploitpeople'sherdmentalitytoincreasesales

1.ATRIPtothesupermarketmaynotseemlikeanexerciseinpsychologicalwarfare—butitis.Shopkeepersknowthatfillingastorewiththearomaoffreshlybakedbreadmakespeoplefeelhungryandpersuadesthemtobuymorefoodthantheyhadintended.Stockingthemostexpensiveproductsateyelevelmakesthemsellfasterthancheaperbutlessvisiblecompetitors.Nowresearchersareinvestigatinghow“swarmintelligence”(thatis,howants,beesoranysocialanimal,includinghumans,behaveinacrowd)canbeusedtoinfluencewhatpeoplebuy.

2.AtarecentconferenceonthesimulationofadaptivebehaviourinRome,Zeeshan-ul-hassanUsmani,acomputerscientistfromtheFloridaInstituteofTechnology,describedanewwaytoincreaseimpulsebuyingusingthisphenomenon.Supermarketsalreadyencourageshopperstobuythingstheydidnotrealisetheywanted:forinstance,byplacingeverydayitemssuchasmilkandeggsatthebackofthestore,forcingshopperstowalkpastothertemptinggoodstoreachthem.MrUsmaniandRonaldoMenezes,alsooftheFloridaInstituteofTechnology,setouttoenhancethistendencytobuymorebyplayingontheherdinstinct.Theideaisthat,ifacertainproductisseentobepopular,shoppersarelikelytochooseittoo.Thechallengeistokeepcustomersinformedaboutwhatothersarebuying.

3.Entersmart-carttechnology.InMrUsmani'ssupermarketeveryproducthasaradiofrequencyidentificationtag,asortofbarcodethatusesradiowavestotransmitinformation,andeverytrolleyhasascannerthatreadsthisinformationandrelaysittoacentralcomputer.Asacustomerwalkspastashelfofgoods,ascreenontheshelftellshimhowmanypeoplecurrentlyintheshophavechosenthatparticularproduct.Ifthenumberishigh,heismorelikelytoselectittoo.

4.MrUsmani's“swarm-moves”modelappealstosupermarketsbecauseitincreasessaleswithouttheneedtogivepeoplediscounts.Anditgivesshoppersthesatisfactionofknowingthattheyboughtthe“right”product—thatis,theoneeveryoneelsebought.Themodelhasnotyetbeentestedwidelyintherealworld,mainlybecauseradiofrequencyidentificationtechnologyisnewandhasonlybeeninstalledexperimentallyinsomesupermarkets.ButMrUsmanisaysthatbothWal-MartinAmericaandTescoinBritainareinterestedinhiswork,andtestingwillgetunderwayinthespring.

5.Anotherrecentstudyonthepowerofsocialinfluenceindicatesthatsalescould,indeed,beboostedinthisway.MatthewSalganikofColumbiaUniversityinNewYorkandhiscolleagueshavedescribedcreatinganartificialmusicmarketinwhichsome14,000peopledownloadedpreviouslyunknownsongs.Theresearchersfoundthatwhenpeoplecouldseethesongsrankedbyhowmanytimestheyhadbeendownloaded,theyfollowedthecrowd.Whenthesongswerenotorderedbyrank,butthenumberoftimestheyhadbeendownloadedwasdisplayed,theeffectofsocialinfluencewasstilltherebutwaslesspronounced.Peoplethusfollowtheherdwhenitiseasyforthemtodoso.

6.InJapanachainofconvenienceshopscalledRanKingRanQueenhasbeenorderingitsproductsaccordingtosalesdatafromdepartmentstoresandresearchcompanies.Theshopssellonlythemostpopularitemsineachproductcategory,andtherankingsareupdatedweekly.Icosystem,acompanyinCambridge,Massachusetts,alsoaimstoexploitknowledgeofsocialnetworkingtoimprovesales.

7.Andthepsychologythatworksinphysicalstoresisjustaspotentontheinternet.OnlineretailerssuchasAmazonareadeptattellingshopperswhichproductsarepopularwithlike-mindedconsumers.Evenintheprivacyofyourhome,youcanstillbepartoftheswarm.

Questions1-6

Completethesentencesbelowwithwordstakenfromthereadingpassage.UseNOMORETHANTHREEWORDSforeachanswer.

1.Shopownersrealizethatthesmellof_______________canincreasesalesoffoodproducts.

2.Inshops,productsshelvedatamorevisiblelevelsellbettereveniftheyaremore_______________.

3.AccordingtoMr.Usmani,withtheuseof“swarmintelligence”phenomenon,anewmethodcanbeappliedtoencourage_______________.

4.Onthewaytoeverydayitemsatthebackofthestore,shoppersmightbetemptedtobuy_______________.

5.Ifthenumberofbuyersshownonthe_______________ishigh,othercustomerstendtofollowthem.

6.Usingthe“swarm-moves”model,shopownersdonothavetogivecustomers_______________toincreasesales.

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