{{B}}DirECtions:{{/B}}
rEAD tilE Following tExt.ChoosE thE BEst worD(s) For EACh numBErED BlAnk AnD mArkA,B,C、orD、onAnswEr shEEt 1.

most plAnts CAn mAkE thEir own FooD From sunlight, {{u}} (1) {{/u}} somE hAvE DisCovErED thAt stEAling is An EAsiEr wAy to livE. thousAnDs oF plAnt spECiEs gEt By {{u}} (2) {{/u}} photosynthEsizing, AnD ovEr 400 oF thEsE spECiEs sEEm to livE By pilFEring sugArs From An unDErgrounD {{u}} (3) {{/u}} oF Fungi(真菌).But in {{u}} (4) {{/u}} A hAnDFul oF thEsE plAnts hAs this moDus opErAnDi BEEn trACED to A rElAtivEly oBsCurE Fungus. to FinD out how {{u}} (5) {{/u}} ArE {{u}} (6) {{/u}}, myCologist mArtinBiDArtonDo oF thE univErsity oFCAliForniA AtBErkElEy AnD his tEAm lookED in thEir roots. whAt thEy FounD wErE {{u}} (7) {{/u}} oF A Common typE oF Fungus, so {{u}} (8) {{/u}} thAt it is FounD in nEArly 70 pErCEnt oF All plAnts. thE prEsEnCE oF this Common Fungus in thEsE plAnts not only {{u}} (9) {{/u}} At how thEy survivE, sAysBiDArtonDo, But Also suggEsts thAt mAny orDinAry plAnts might prospEr From A littlE looting, too. plAnts hAvE {{u}} (10) {{/u}} rElAtions to gEt whAt thEy nEED to survivE. normAl, {{u}} (11) {{/u}} plAnts CAn mAkE thEir own CArBohyDrAtEs through photosynthEsis, But thEy still nEED minErAls. most plAnts hAvE {{u}} (12) {{/u}} A symBiotiC rElAtionship with A {{u}} (13) {{/u}} nEtwork oF whAt ArE CAllED my CorrhizAl Fungi, whiCh liEs BEnEAth thE ForEst {{u}} (14) {{/u}}. thE Fungi hElp grEEn plAnts ABsorB minErAls through thEir roots, AnD {{u}} (15) {{/u}}, thE plAnts normAlly {{u}} (16) {{/u}} thE Fungi with sugArs, or CArBon with A numBEr oF plAnts shAring thE sAmE FungAl wEB, it wAs pErhAps {{u}} (17) {{/u}} thAt A FEw ChEAtErs—DuBBED EpipArAsitEs—woulD EvolvE to BEAt thE systEm. {{u}} (18) {{/u}}, thEsE plAnts rEvErsED thE Flow oF CArBon, {{u}} (19) {{/u}} it into thEir roots From thE Fungi {{u}} (20) {{/u}} rElEAsing it As "pAymEnt."

A．instEAD oF
B．in spitE oF
C．in plACE oF
D．By ContrAst oF