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
2015-11-27
28
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.
【C20】
选项
A、deserve
B、afford
C、pose
D、equip
答案
C
解析
根据空格后的threat,应马上想到固定搭配pose…threat to“对……造成威胁”。此处指康巴族人较少对大象造成威胁。故选C项pose。
转载请注明原文地址:https://kaotiyun.com/show/qBsZ777K
0
考研英语一
相关试题推荐
Halfoftheworld’spopulationwillbespeakingorlearningEnglishby2015,researcherssay.Twobillionpeopleareexpectedto
Halfoftheworld’spopulationwillbespeakingorlearningEnglishby2015,researcherssay.Twobillionpeopleareexpectedto
Halfoftheworld’spopulationwillbespeakingorlearningEnglishby2015,researcherssay.Twobillionpeopleareexpectedto
Whydoescreamgobadfasterthanbutter?Someresearchersthinktheyhavetheanswer,anditcomesdowntothestructureofthe
Who’spoorinAmerica?That’saquestionhardtoanswer.Hardbecausethere’snoconclusivedefinitionofpoverty.Lowincomema
Who’spoorinAmerica?That’saquestionhardtoanswer.Hardbecausethere’snoconclusivedefinitionofpoverty.Lowincomema
Itusedtobesostraightforward(直接的).Ateamofresearchersworkingtogetherinthelaboratorywouldsubmittheresultsofthei
随机试题
风痰的特征是
根据国家有关法律、法规规定实行进出境管理的特殊单证。下列报关单证中属于特殊单证的是()。
运用年限法估测设备的实体性贬值率或成新率,其假设前提是()。
凯恩斯主义认为货币政策传导变量为()。
作为一个利润中心,配送中心的绩效考核主要是在一定的物流费用率下的物流销售收益和客户服务水平的考核。()
社会学习说用()来解释言语的获得。
文化软实力集中体现了一个国家基于文化而具有的凝聚力和生命力。以及由此产生的吸引力和影响力。提高国家文化软实力,必须()
问题处理方案的正确而完整的描述称为【】。
Ifwehadn’tworkedhardlastyear,______(现在公司的情况就不会进展得如此顺利).
ArtificialIntelligence(AI)Weoftendon’tnoticeit,butartificialintelligence(AI)isallaroundus.Itispresentinc
最新回复
(
0
)