首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
考研
If you have ever wondered how an elephant smells, scientists have the answer. Researchers have discovered that African Elephants
If you have ever wondered how an elephant smells, scientists have the answer. Researchers have discovered that African Elephants
admin
2022-01-04
65
问题
If you have ever wondered how an elephant smells, scientists have the answer. Researchers have discovered that African Elephants have the largest number of genes【C1】________smell of any mammal. Given the size of their trunks, and how important it is【C2】________their survival, it is probably unsurprising that an elephant’s nose is not only the longest in the animal kingdom, but also the most effective.
In【C3】________, humans and other primates have a poor sense of smell. "The functions of these genes are not well known,【C4】________they are likely important for the living environment of African elephants," said author Dr Yoshihito Niimura of the University of Tokyo. "【C5】________. an elephant’s nose is not only long but also superior. " The sense of smell is【C6】________to all mammals, and they use it for【C7】________food, finding mates and locating their offspring.
In a study published in Genome Research, scientists【C8】________the 13 mammal species and found that African Elephants have twice the number of smell genes【C9】________dogs and five times more than humans. They have around 2,000 genes alone that are associated with scent. Humans in comparison have just under 400 and some other primates even【C10】________.The study found that 20,000 genes are【C11】________for the sense of smell in mammals, of which around half are functional, but the collections【C12】________for each species. Horses have around 1,000 smell genes, rabbits around 750 and rats about 1,200.
"The large repertoire of elephant (smell) genes might be attributed to elephants’ heavy【C13】________on scent in various contexts, including social【C14】________and reproduction," added Dr Niimura African and Asian elephants possess a【C15】________scent organ behind each eye, and male elephants can produce a special substance during annual mating, which is characterized【C16】________increased aggressiveness. And【C17】________studies have revealed that, African elephants can reportedly【C18】________between two Kenyan ethnic groups—the Maasai, whose young men【C19】________manhood by spearing elephants, and the Kamba, who are agricultural people that【C20】________little threat to elephants through smell.
【C14】
选项
A、organization
B、practice
C、communication
D、negotiation
答案
C
解析
空格要求填入的名词和定语social构成名词短语,是various contexts(各种场合)的举例。和reproduction(繁殖)并列。social communication意为“社会交往”,可以表明现大象活动的情况,故选C项communication。A项organization“组织”,“社会组织”是一种静态机构,不是一种活动场合。B项practice“实践”,“社会实践”常属于人类活动。D项negotiation“谈判”,通常也用于指人的活动。
转载请注明原文地址:https://kaotiyun.com/show/WNY4777K
0
考研英语二
相关试题推荐
Thesentence"Aftereachrainshower,anotherInternetmillionairesprangup"(Paragraph1)means______.Whatcanbeinferred
Theoppositionpartydemandsthatthosecabinetmemberswhoareinvolvedintherecentscandalshould______.
ManyAmericansregardthejurysystemasaconcreteexpressionofcrucialdemocraticvalues,includingtheprinciplesthatallc
TheUnitedStateshashistoricallyhadhigherratesofmarriagethanthoseofotherindustrializedcountries.Thecurrentannual
Conveniencefoodhelpscompaniesbycreatinggrowth;butwhatisitseffectonpeople?Forpeoplewhothinkcookingwasthefoun
Conveniencefoodhelpscompaniesbycreatinggrowth;butwhatisitseffectonpeople?Forpeoplewhothinkcookingwasthefoun
Conveniencefoodhelpscompaniesbycreatinggrowth;butwhatisitseffectonpeople?Forpeoplewhothinkcookingwasthefoun
MillionsofAmericansandforeignersseeG.I.Joeasamindlesswartoy,thesymbolofAmericanmilitaryadventurism,butthat’
Thebattletopreventoratleastslowglobalwarminghasintensifiedinthepastyearasscientistshavelearnedmoreaboutthe
OntheheelsofElNino,itsopposite,LaNinamaysoonarrive.InaWeeklyUpdate,scientistsattheNOAAClimatePredictionCe
随机试题
行政管理机构的特性有()
对于肺动脉漏斗部狭窄者要想显示右室流出道及其形态,隔束、壁束、室上嵴厚度及右室壁肌肥厚,最佳切面图为()
启动外源性凝血途径的物质是
根据中新协定的规定,如果利息受益所有人是缔约国另一方居民,在该项利息是由银行或金融机构取得的情况下,则所征税款不应超过利息总额的()。
在上海证券交易所上市的某只股票,2008年末的每股税后利润为0.20元,市场利率为2.5%。根据上述材料,回答下列问题:股票动态价格主要指持有股票期间的价格,其确定方法与()价格确定基本相同。
我国《政府采购法》规定,政府采购实行集中采购和分散采购相结合。政府采购中主要的采购方式是()。
下列画家中,“浙派”的代表人物有()。
促进胎儿的生长发育和预防先天畸形,孕晚期孕妇维生素A的RNI和UL均高于未孕期。()
下列有关现代汉语字形的说法,错误的是()。
通过CA安全认证中心获得证书主体的X.509数字证书后,可以得知______。
最新回复
(
0
)