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
2017-02-17
55
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/hlEZ777K
0
考研英语一
相关试题推荐
Mostyoungpeopleenjoysomeformofphysicalactivity.Itmaybeagameofsome【B1】______—football,hockey,golf,ortennis.It
Mostyoungpeopleenjoysomeformofphysicalactivity.Itmaybeagameofsome【B1】______—football,hockey,golf,ortennis.It
Mostyoungpeopleenjoysomeformofphysicalactivity.Itmaybeagameofsome【B1】______—football,hockey,golf,ortennis.It
Mostyoungpeopleenjoysomeformofphysicalactivity.Itmaybeagameofsome【B1】______—football,hockey,golf,ortennis.It
关于宇宙起源的科学发现——1998年英译汉及详解Theywere,byfar,thelargestandmostdistantobjectsthatscientistshadeverdetected:astripof
技术与天才哪个对科学发展更重要——1994年英译汉及详解Accordingtothenewschoolofscientists,technologyisanoverlookedforceinexpandingthehori
人类性格与行为形成的原因及影响——1990年英译汉及详解Peoplehavewonderedforalongtimehowtheirpersonalitiesandbehaviorsareformed.Itisnote
人类性格与行为形成的原因及影响——1990年英译汉及详解Peoplehavewonderedforalongtimehowtheirpersonalitiesandbehaviorsareformed.Itisnote
人类性格与行为形成的原因及影响——1990年英译汉及详解Peoplehavewonderedforalongtimehowtheirpersonalitiesandbehaviorsareformed.Itisnote
Scientistsaresupposedtochangetheirminds.【F1】Havingadoptedtheirviewsonscientificquestionsbasedonanobjectiveevalu
随机试题
记名提单()
下列对逆转录的叙述错误的是
甲公司为上市公司,系增值税一般纳税人,适用增值税税率17%,采用资产负债表债务法进行所得税会计核算,适用企业所得税税率为25%,甲公司2013年度实现利润总额8000万元,涉及企业所得税的相关交易或事项如下:(1)1月30日,购买一处公允价值为240
《中学教师专业标准(试行)》确定的教师专业能力包括哪几个方面?
女老师换了个新发型,课前一进班级,有几个淘气的男同学就凑在一起,用调侃的语调大声喊道:“老师,我爱你。”下列处理方式,最恰当的一项是()
新时期爱国主义教育的主要内容包括()。
设三阶实对称矩阵A的特征值为λ1=—1,λ2=λ3=1,对应于λ1的特征向量为ξ1=(0,1,1)T,求A。
已知向量组α1=的秩为2,则t=________。
Australianchildrenarevisitingsocialmediawebsitesatanincreasinglyyoungerage,anewsurveysuggests,withoneinfive"
WhatdoesSallydointhesupermarket?
最新回复
(
0
)