英语阅读Eventhenewestgardenerrealizesthatplantsdiewithoutwater;whatisnotsowellknownisthatplantsdieequallydecisively,thoughnotsoquickly,iftheyareoverwatered.Beginnersusuallydecidetoplayitsafeandkeeptheirpotte

　　英语阅读

　　Eventhenewestgardenerrealizesthatplantsdiewithoutwater;whatisnotsowellknownisthatplantsdieequallydecisively,thoughnotsoquickly,iftheyareoverwatered.Beginnersusuallydecidetoplayitsafeandkeeptheirpottedplantsthoroughlywet.Inconsequence,deathbydrowningisoneofthecommonestdisasterstobefalltheplantsofanewhorticulturist.Plantswitherawayiftheydon'tgetenoughwater,andthisdrawsattentiontotheirproblem.Aplantthathasbeenslightlyunderwateredsothatitdroopsstrikesterrorintotheheartofitsnewowner.Butitwill,infact,recovercompletelyaslongasrescuecomesintimeandtheprocessisnotrepeatedtoooften.Overwateredplants,unfortunately,donotgiveanysuchobvioussignal;slowlytheyceasetothriveandthefirstvisibleindicationofserioustroubleisayellowingofthelowerleaves.Unlesstheoverwateredpotsoilisgivenaconsiderableperiodwithoutwater,duringwhichtimetheplantwillcontinuetolookwretched,itwillsuddenlycollapseinexactlythesamewayastheunderwateredplant---butwithnochanceofbeingrevivedbecausetherootshaverottedaway.

　　27.Judgingfromthetext,ahorticulturistisonewho____.

　　[A]raisesanimals

　　[B]growsplants

　　[C]givesadvicetonewgardeners

　　[D]studiesthewateringofplants

　　28.Oneofthecommonestdisastersthathappentoplantsofanewgardeneris____.

　　[A]underwatering

　　[B]overwatering

　　[C]lackoffertilizer

　　[D]awitheringdisease

　　29.Whichofthefollowingplantshasmorechanceofcompleterecovery?____

　　[A]Aplantwithitsleavesdrooping.

　　[B]Aplantwithitslowerleavesyellowing.

　　[C]Aplantwithitsrootsrottingaway.

　　[D]Aplantthatslowlyceasetothrive.