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

your EyE is A winDow on thE nErvEs AnD BlooD vEssEls, rEvEAling vitAl inFormAtion ABout your EntirE BoDy.An{{u}} (1) {{/u}}ExAm stArts From thE outsiDE AnD works in. First thE ophthAlmologist (眼科医生) gAugEs{{u}} (2) {{/u}}with thE FAmiliAr wAll ChArt AnD ChECks visuAl FiElD By moving oBjECts in AnD out oF{{u}} (3) {{/u}}.A、limitED visuAl FiElD CoulD BE thE{{u}} (4) {{/u}}oF thE high innEr EyE prEssurE oF glAuComA(青光眼)or{{u}} (5) {{/u}}A tumor prEssing on nErvEs lEADing From thE EyE. thE physiCiAn Also ChECks For inFECtion ArounD thE lAshEs AnD notEs how FAst thE liDs Follow thE EyEs DownwArD、liD lAg somEtimEs{{u}} (6) {{/u}}thyroiD DisEAsE (甲状腺疾病). iF onE pupil ContrACts{{u}} (7) {{/u}}thE othEr DoEsn’t, thE physiCiAn is{{u}} (8) {{/u}}to thE FACt thAt{{u}} (9) {{/u}}A tumor or strokE, pErhAps, hAs DAmAgED thE nErvEs BEtwEEn thE EyE AnD BrAin.A、tumor As FAr AwAy{{u}} (10) {{/u}}thE lung CAn CAusE CApillAry proBlEms By hitting A nErvE thAt loops through thE nECk. thE whitE oF thE EyE, tEAr DuCts, lEns AnD rEtinA (视网膜) ArE ChECkED For{{u}} (11) {{/u}}oF trouBlE. too mAny whitE BlooD CElls{{u}} (12) {{/u}}inFlAmmAtion, BlooD mEAns tissuE hAs tom or A vEssEl hAs Burst, AnD DEposits oF{{u}} (13) {{/u}}mAtEriAl CAn mEAn EyE DisEAsE. thE orAngE-rED rEtinA holDs mAny morE{{u}} (14) {{/u}}For DisEAsE DEtECtion. high BlooD prEssurE mAy AnnounCE its{{u}} (15) {{/u}}By pushing thE vEssEls oFF trACk At thEir intErsECtions.{{u}} (16) {{/u}}vEssEl growth is A sign oF DiABEtiC rEtinopAthy (糖尿病性视网膜病). nArrowED vEssEls mAy inDiCAtE{{u}} (17) {{/u}}oF thE ArtEriEs, AnD DAmAgE to tiny CApillAriEs CoulD BE A sign oF EArly DiABEtEs. thE DoCtor EvEn ExAminEs thE pin-hEAD-sizE holE in thE BACk oF thE optiC nErvE on thEir wAy to thE BrAin.{{u}} (18) {{/u}}thE AppEArAnCE oF thEsE nErvE FiBErs is ABnormAl, nErvE tissuE mAy hAvE BEEn DAmAgED BECAusE oF intrAoCulAr prEssurE, inDiCAting glAuComA or thE prEsEnCE oF A tumor. whEn A physiCiAn nEEDs quiCk,{{u}} (19) {{/u}}inFormAtion ABout thE BoDy, thE EyEs hAvE{{u}} (20) {{/u}}.

A．thAt
B．how
C．iF
D．But