【Aswithanyhouseguests，indoorplantsrequireacertainamountofbasic，regularattentioniftheyaregoingtofeelathome．Thefirstconsiderationwhenpurchasingplantsistomakereasonablysurethattheyaresuitablefortheconditioninw】

　　Aswithanyhouseguests，indoorplantsrequireacertainamountofbasic，regularattentioniftheyaregoingtofeelathome．Thefirstconsiderationwhenpurchasingplantsistomakereasonablysurethattheyaresuitablefortheconditioninwhichtheyaregoingtobehoused．

　　Ageneralruleformostplantsbeingbroughtindoorsforthefirsttimeistoensurethattheyhavereasonabletemperatureofnotlessthan60degreesFahrenheit，apositionoutofcoldair，safefrompetsandnotexposedtostrongsunlight．

　　Plantslovecompany．Whenplantsaregrowingtogether，theycreateanatmosphereofdamparoundthemselveswhichisfarmorebeneficialthanhotdryconditions．Agroupofplantswillalsopresentamorepleasingpictureandprovideanopportunityforacreativearrangement．Thereisnosecrettothis．Justrelyonyournaturalfeelingforharmony．

　　Wateringandfeedingplantsareprobablythetwoareasofcarethataretheleastwellunderstood，but，again，ifyoufollowafewsimplerules，yourplantsshoulddowell．Coldslightlywarmwateristhereforetheanswer．Itisusuallybettertopourwaterontothesoilonthesurfaceofthepotratherthanputthewaterintothepotholderatthebottom．Avoidgivingsmallamountofwateratregularintervals-itismuchbettertowetthesoilrightthroughthepotinonegoandthentoallowittodrynoticeablybeforegivingitafurtherwatering．

　　ThemajorityofindoorplantswillbeinactivegrowthfromMarchuntilOctober，andduringthistime，theestablishedoneswillbenefitfromregularfeeding．Thismaymeanfeedingwithaweakliquidfertilizer（肥料）ateachwateringoratintervalsofaweekortendayswithfertilizeratastandardstrength．Itisimportant，however，toensurethatplantsarenotfedwhengrowthisinactive，whenthesoilinthepotisdry，ortoosoonaftertheplantshasbeenpottedup．

　　28．InParagraph2，theauthormainlytellsusto___．

　　A．buyplantsthathelpcleanindoorair

　　B．createanewenvironmentwithplants

　　C．putplantsonthesunnysideoftheroom

　　D．makesureofsuitableconditionsforplants

　　29．What'sthebenefitofplantsgrowingtogether？___

　　A．Itprovidesownersgoodcompany．

　　B．Itmakesitconvenienttolookafterthem．

　　C