- 閱讀理解A
題干：Beingamanhasalwaysbeendangerous.Thereareabout105malesbornforevery100females,butthisratiodropstonearbalanceattheageofmaturity,andamong70-year-oldstherearetwiceasmanywomenasmen.Butthegreatuniversalofmalemortalityisbeingchanged.Now,boybabiessurvivealmostaswellasgirlsdo.Thismeansthat，forthefirsttime，therewillbeanexcessofboysinthosecrucialyearswhentheyaresearchingforamate.Moreimportant，anotherchancefornaturalselectionhasbeenremoved.Fiftyyearsago,thechanceofababy(particularlyaboybaby)survivingdependedonitsweight.Akilogramtoolightortooheavymeantalmostcertaindeath.Todayitmakesalmostnodifference.Sincemuchofthevariationisduetogenes,onemoreagentofevolutionhasgone.Thereisanotherwaytocommitevolutionarysuicide：stayalive,buthavefewerchildren.Fewpeopleareasfertileasinthepast.Exceptinsomereligiouscommunities,veryfewwomenhas15children.Nowadaysthenumberofbirths,liketheageofdeath,hasbecomeaverage.Mostofushaveroughlythesamenumberofoffspring.Again,differencesbetweenpeopleandtheopportunityfornaturalselectiontotakeadvantageofithavediminished.Indiashowswhatishappening.Thecountryofferswealthforafewinthegreatcitiesandpovertyfortheremainingtribalpeoples.Thegrandmediocrityoftoday-everyonebeingthesameinsurvivalandnumberofoffspring-meansthatnaturalselectionhaslost80%ofitspowerinupper-middle-classIndiacomparedtothetribes.Forus,thismeansthatevolutionisover;thebiologicalUtopiahasarrived.Strangely,ithasinvolvedlittlephysicalchange.Nootherspeciesfillssomanyplacesinnature.Butinthepast100000years-eventhepast100years-ourliveshavebeentransformedbutourbodieshavenot.Wedidnotevolve，becausemachinesandsocietydiditforus.Darwinhadaphrasetodescribethoseignorantofevolution：they“l(fā)ookatanorganicbeingasasavagelooksataship，asatsomethingwhollybeyondhiscomprehension."Nodoubtwewillremembera20thcenturywayoflifebeyondcomprehensionforitsugliness.ButhoweveramazedourdescendantsmaybeathowfarfromUtopiawewere，theywilllookjustlikeus.
題目：What used to be the danger in being a man according to the first paragraph? - A 、A lack of mates.
- B 、A fierce competition.
- C 、A lower survival rate.
- D 、A defective gene.
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參考答案【正確答案：C】
細節(jié)題。第一段-、二句介紹了男性過去的狀況，即做男人總是有危險的。出生時男孩比例 高于女孩，到成熟期時男女比例已基本持平，到70歲時男人的數(shù)量僅剩女人數(shù)量的一半了。 第三句也提到了過去男性的死亡率高，其意思就是男人的存活率低。因此C選項正確。
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