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
80
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.
【C1】
选项
A、given out
B、dedicated to
C、limited to
D、hit upon
答案
B
解析
空格要求填入过去分词作后置定语修饰宾语the largest number of genes(最大数量的基因)。后置定语中的名词为smell(嗅觉),从“基因决定机能”的常识可知,空格前的genes决定着空格后的smell。B项dedicated to意为“专注于;把……用在”,此处意为“嗅觉基因”。
转载请注明原文地址:https://kaotiyun.com/show/B6sZ777K
0
考研英语一
相关试题推荐
Halfoftheworld’spopulationwillbespeakingorlearningEnglishby2015,researcherssay.Twobillionpeopleareexpectedto
【F1】Breathingparticulate-laden(akasmoggy)airmaybehardeningyourarteriesfasterthannormal,accordingtoresearchpublishe
Who’spoorinAmerica?That’saquestionhardtoanswer.Hardbecausethere’snoconclusivedefinitionofpoverty.Lowincomema
Who’spoorinAmerica?That’saquestionhardtoanswer.Hardbecausethere’snoconclusivedefinitionofpoverty.Lowincomema
Immigrationstirsupstrongenoughfearstojustifyquestionablemeasuresofprotectionagainstit—fromarrestsatthedoorsof
行为科学的建立——2002年英译汉及详解Almostallourmajorproblemsinvolvehumanbehavior,andtheycannotbesolvedbyphysicalandbiological
[A]Dataanalysis[B]Subscribersusingtechnology[C]Accesstoreadingdata:Usingtechnology[D]OperationofScribdandOyster[
SalesofexistinghomesrosebythelargestamountinmorethanfiveyearsinSeptember.Butanalystscautionedagainstreading
McGrawreceivesdailytextmessagesfromSeventeenmagazineaboutfashion,includingtipsaboutwhattoweartotheprom.Shepl
随机试题
下列关于注射剂的说法,错误的是()。
财务报表的编制基础是指财务报表是在持续经营基础上还是非持续经营基础上编制的。()
Theconceptofobtainingfreshwaterfromicebergsthataretowedtopopulatedareasandaridregionsoftheworldwasoncetrea
患者,男,50岁。尿毒症晚期,近来病情加重,患者要求停止治疗,对家人大发雷霆,怨恨家人照顾不周。此心理反应属于
某工程,建设单位委托监理单位承担施工阶段的监理任务,总承包单位按照施工合同约定选择了设备安装分包单位。在合同履行过程中发生如下事件:事件1:工程开工前,总承包单位在编制施工组织设计时认为修改部分施工图设计可以使施工更方便,质量和安全更易保证,遂向项
甲股份有限公司(以下称为“甲公司”)系上市公司,主要经营电子设备、电子产品的生产销售,为增值税一般纳税人,适用的增值税税率为17%,适用的所得税税率为25%。除特别注明外,甲公司产品销售价格为不含增值税价格。(1)甲公司2010年1至11月份的利润表如下
你可以随时愚弄某些人。假若以上属实,以下哪些判断必然为真?()Ⅰ.张三和李四随时都可能被你愚弄。Ⅱ.你随时都想愚弄人。Ⅲ.你随时都可能愚弄人。Ⅳ.你只能在某些时候愚弄人。Ⅴ.你每时每刻都在愚
李某因为缴纳税款数额的问题和税务机关发生争议,依据我国《行政复议法》和《行政诉讼法》的规定,李某可以寻求的解决途径是()。
宋、李、王、吴4人均订阅了《人民日报》《光明日报》《参考消息》《文汇报》中的两种报纸,每种报纸均有两人订阅,且各人订阅的均不完全相同。另外,还知道:(1)如果吴至少订阅了《光明日报》《参考消息》巾的一种,则李订阅了《人民日报》而王未订阅《光明日报》;(
下列数组定义中错误的是()。
最新回复
(
0
)