Unit21HumanBiologyⅠ.完形填空Almosteveryonewantstogetsmarter.Westruggletoimproveour__1__，intelligenceandattention.Wedrinkcupaftercupofcoffeetohelpus__2__theday.__3__，anewstudypublishedinCurrentDirectionsinPsychologicalSciencewarnsthatthereare__4__tohowsmarthumanscanget.Eachofourbodypartsdevelopsinacertainwayforareason.__5__，wearenot3meterstall__6__mostpeople'sheartsarenotstrongenoughtosend__7__upthathigh.Scientistssaythatourthinkingabilityworksinthesameway.Ababy'sbrainsizeislimitedbyaseriesof__8__，suchasthesizeofthemother'spelvis(骨盆)．Ifourbrainsdevelopedtobebigger，therecouldbemore__9__duringchildbirth.ThestudyofJews，whohaveanaverageIQmuch__10__thanotherEuropeans，showedtheyweremore__11__todevelopdiseasesofthe__12__system.Thismightbebecauseoftheirincreasedbrainpower.Ifintelligencecannotbeimproved，canweatleastgetbetterat__13__？Notreally，sayscientists.Theystudied__14__likecaffeine(咖啡因)thatimproveattention.Theyfoundthedrugsonlyhelpedpeoplewithserious__15__problems.Forthosewhodidnothavetroublepayingattention，thedrugscouldhavethe__16__effect.Scientistssaythatthissuggeststhereisa(n)__17__limittohowmuchpeoplecanorshouldconcentrate.Ourmemoryisalsoa“double－edgedsword”．Peoplewithextremelygoodmemoriescould__18__havingadifficultlifebecausetheycannot__19__badthingsthathappentothem.ThomasHills，oneoftheauthorsofthepaper，saidthat__20__alltheproblemsintryingtogetsmarter，it'sunlikelythattherewilleverbea“supermind”．【语篇解读】每个人都想使自己变得更聪明，你是否也在想方设法改善自己的记忆力和注意力呢？1．A.abilityB．characterC．memoryD．emotion答案C[“”“”几乎每个人都想变得更聪明。我们都想努力提高我们的记忆力、智力和注意力。]2．A.gothroughB．putthroughC．getthroughD．carrythrough答案C[我们一杯接着一杯地喝咖啡来度日。]3．A.ThoughBThereforeC．HoweverD．Meanwhile答案C[文章第2段和第1段在意思上为转折关系，故选however。]4．A.standardsB．measuresC．rangesD．limits答案D[然而，一项新研究警告说，人类的聪明程度是有限度的。]5．A.AtfirstB．InadditionC．ForexampleD．Aboveall答案C[“”我们的身体器官如何发育是有一定道理的，就像我们的身高不会达到3米一样。forexample用于举例。]6．A.untilB．becauseC．beforeD．sothat答案B[因为大多数人的心脏不够强。]7．A.bloodB．informationC．breathD．strength答案A[不能够将血液输送到那个高度。]8．A.factorsBreasonsC．aspectsD．effects答案A[婴儿大脑的大小受到一系列因素的限制，例如妈妈骨盆的大小。]9．A.chancesB．deathsC．choicesD．lives答案B[“”如果我们的大脑发育得更大，在出生时就可能更容易死亡。]10．A.smarterB．betterC．lowerD．higher答案D[犹太人的平均智商比其他欧洲人高出许多。]11．A.likelyB．possibleC．probableD．sure答案A[对犹太人的研究显示他们更有可能患神经系统疾病。]12．A.physicalB．bodilyC．personalD．nervous答案D[见上题解析。]13．A.exercisingB．concentratingC．memorizingD．thinking答案B[根据下一行的attention“可推断此处指集中(注意力)”。]14．A.poisonsB．drinksC．plantsD．drugs答案D[后文多次提到drugs一词，由此可知他们研究的是像咖啡因这样的提高注意力的药物。]15．A.attentionB．familyC．healthD．living答案A[他们发现这些药物只能帮助那些注意力有严重问题的人。]16．A.sameB．oppositeC．differentD．similar答案B[对于那些注意力没有问题的人来说，药物会起相反的作用。]17．A.lowerB．smallerC．upperD．higher答案C[科学家们说，这表明人们的注意力也是有上限的。]18．A.endupB．makeupC．startupDcomeup答案A[记忆力也是一把双刃剑。记忆力极好的人最终可能会过着很困扰的生活，...
