BythetimeIfinishedhighschoolmyinterestinanimalshadgrownandenrolledatauniversitytostudybiology.Ilearnedsoonenoughthatstudyinganimals 36 thislevelwasnotintheanimals’bestinterests.I 37 onemidtermexaminwhicheachstudentwas 38 alargefreshly-killedfrogandinstructedtodissect(解剖)andmarkasetof 39 parts.Ilookedatthe 40 froginfrontofmeandwassaddenedthatherlifewas 41 awayforsuchaslight 42 .
Ayearlaterinthesame 43 whereIdissectedthefrogIperformedasmallactofanimal 44 .Wewere 45 onfruitfliesanditwastimetorecordthedistributionof characteristicsintheirnextgeneration.Flieswere 46 insmallplasticbottles.Countingthenumberofflieswithwhiteorredeyesrequiredfirstexposingthemtoether(乙醚) 47 theycouldnotmove.Theflieswerethenspreadontoapieceofwhitepapertobe 48 andcounted.Whenthedatacollectionwas 49 theflieshadnofurtheruseandourinstructionswereto 50 themintoasmallglassdishofoilatthecenterofeachdeskwhichwastobetheirfinalresting 51 .
OncealittlepileofflieshadbeencountedIpushedthemofftheedgeofthepaper.AswerecordedourdataI 52 oneeyeonthem.Withinminutesthepilewashumming(嗡嗡叫)astinylegsandwingsbeattheirwayoutoftheetherfog.Iwasextremelyexcitedastheytook 53 .Thatwasmyfirst 54 inrefusingtoconductscientificresearchthattreatednonhumanlifeina(n) 55 way.
36.A.at B.with C.for D.off
37.A.decide B.remember C.forget D.regret
38.A.created B.thought C.watched D.handed
39.A.student B.animal C.body D.frog
40.A.alive B.dead C.living D.wounded
41.A.made B.brought C.taken D.passed
42.A.reason B.spirit C.space D.system
43.A.library B.house C.classroom D.lab
44.A.operation B.relation C.health D.wealth
45.A.experimenting B.strengthening
C.striking D.experiencing
4
