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1、Notallvegetablesneedlotsofsunshine.阅读理解答案 Notallvegetablesneedlotsofsunshine.MarkHoffmanandhiswife,Guia,ownabed-and-breakfastguesthouseinruralKempton,Illinois.Theyoftenservetheirguestsproducefreshfromthegarden. TheHoffmanshavebeengrowingfoodandflowersfortwenty-fiveyears.Foralmosttenofthosey
2、ears,Mr.Hoffmanhasbeenexperimentingandworkingwithshadeplantings.Hesaysvisitorstohiswebsite——oftenaskhowtoplantinshadespaces.Hesaid,“Thebottomlinehereisthatmostplantswillproducemoreinfullsun.Butifyoudonothavefullsun,thereareotheroptions.” Forexample,hegrowstomatoesnearoaktrees.Oaktreescanprod
3、ucealotofshade.ButMr.Hoffmansayshistomatoplantsgrowaslongastheygetfivehoursadayofdirectsunshine,especiallymorningsun.Notonlydoesthisgoagainstthetraditionaladvicethattomatoesneedsix,eight,eventwelvehoursadayoffullsun,italsoshowshowplantsandtreesrootscansharenutrientsandwater.Mr.Hoffmanalsoplan
4、tedasparagus（芦笋）aroundatreeatitsdripline,theareabelowtheouterlimitofthebranches.Sowhenitrains,alltheraindripsdownrightontheasparagus. TheHoffmans’websiteincludesalistofvegetables,flowersandherbsthathaveproducedacceptablyfortheminpartialshade.Mr.Hoffmansaysplantswithwiderleavesseemtodobetteri
5、nshadyenvironments.Healsofoundthathispotatoesdidbetterinpartialshadethaninfullsun. Movingthemoutofthesunhelpedcontrolaninsectproblemwithleafhoppers.Mr.Hoffmandoesnotusepesticides(农药).Instead,heplantedthepotatoesatthedripline,especiallyontheeastsideofthetree.Thepotatoesgetmorningsun,buttheyar
6、eshadedduringthehottestpartoftheday.Leafhoppersdislikeshade,andthehottestpartofthedayiswhentheydotheworstoftheirdamage. Timeofday,brightnessofthesun,shadowsfromtrees,wallsandbuildings,theseallinfluencehowmuchsunlightfallsordoesnotfallonplants.AndextensionagentCurtisSwiftatColoradoStateUniver
7、sitysayspeopleinterestedinshadeplantingshouldalsoremembersomethingelse.Theterm“shade”candescribedifferentamountsofdarkness.Hesaysitcanevenmeandifferentthingsindifferentpartsoftheworld. 46.What’stheauthor’spurposeofwritingthepassage A.Topres
