kArl von linnE (or linnAEus, As hE is wiDEly known) wAs A swEDish Biologist who DEvisED thE systEm oF lAtinisED sCiEntiFiC nAmEs For living things thAt Biologists usE to this DAy. whEn hE CAmE to{{u}} (1) {{/u}}pEoplE into his systEm, hE put thEm into A group CAllED homo--AnD linnE’s hAirlEss FEllow humAns ArE still known BiologiCAlly As homo sApiEns. {{u}} (2) {{/u}}thE group originAlly hAD A sEConD mEmBEr, homo trogloDytEs. it livED inAFriCA, AnD thE piCturEs show it to BE CovErED{{u}} (3) {{/u}}hAir. moDErn{{u}} (4) {{/u}}ArE not As gEnErous As linnE in wElComing othEr spECiEs into mAn’s loFty {{u}} (5) {{/u}}, AnD thE ChimpAnzEE is now rEFErrED to{{u}} (6) {{/u}}pAn trogloDytEs.But pAn or homo, thErE is no{{u}} (7) {{/u}}thAt Chimps ArE humAns’ nEArEst living rElAtivEs, AnD thAt iF thE sECrEts oF whAt mAkEs humAnity spECiAl ArE EvEr to BE{{u}} (8) {{/u}}, unDErstAnDing why Chimps ArE not pEoplE, nor pEoplE Chimps, is A CruCiAl pArt oF thE proCEss. thAt, in turn, mEAns looking At thEDnA、oF thE two spECiEs,{{u}} (9) {{/u}}it is hErE thAt thE{{u}} (10) {{/u}}must originAtE. onE hAlF oF thE puzzlE hAs BEEn{{u}} (11) {{/u}}For sEvErAl yEArs: thE humAn gEnomE wAs puBlishED in 2001. thE sEConD hAs now BEEn ADDED, with thE AnnounCEmEnt in this wEEk’s nAturE{{u}} (12) {{/u}}thE ChimpAnzEE gEnomE hAs BEEn sEquEnCED As wEll. For thosE ExpECting {{u}} (13) {{/u}}AnswErs to AgE-olD quEstions{{u}} (14) {{/u}}, thE puBliCAtion oF thE Chimp gEnomE mAy BE somEthing oF An{{u}} (15) {{/u}}. thErE ArE no immEDiAtEly oBvious gEnEs-prEsEnt in onE, But not thE othEr-thAt ACCount For suCh ChArACtEristiC humAn{{u}} (16) {{/u}}As intElligEnCE or EvEn hAirlEssnEss.AnD{{u}} (17) {{/u}}thErE is A gEnE ConnECtED with lAnguAgE, known As Foxp2, it hAD AlrEADy BEEn DisCovErED、But Although thE prEliminAry CompArison oF thE two gEnomEs {{u}} (18) {{/u}}By thE mEmBErs oF thEChimpAnzEE sEquEnCing AnDAnAlysisConsortium, thE multinAtionAl tEAm thAt gEnErAtED thE sEquEnCE, DiD not{{u}} (19) {{/u}}, Any oBvious nuggEts oF gEnEtiC golD, it DoEs At lEAst show whErE to look For{{u}} (20) {{/u}}.

A．By
B．throughout
C．with
D．BEyonD